Enter your email to sign up or log in. Your assistant is chosen once: Airi comes with a period tracker, Kai with watch faces.
🎁 A friend invited you — welcome to My Assistant!
Welcome back! Enter your email. A new device gets a 6-digit code by email; your name, assistant, subscription, keys and credit come back with your account.
Already have an account? Tap Log in above and enter your email.
Everything unlocked, no message limits. Cancel anytime.
Bring your own AI key and get every feature, with no message limits, for only €1.99 a month.
Local test only — PayPal's real button appears here on the live site.
New to API keys? It's easier than it sounds. An API key is a personal access code for an AI company such as OpenAI or DeepSeek: create one on their website in about two minutes, add a few dollars of credit there, then paste it here once. You pay them only for what you actually use — often just cents a month — and My Assistant does everything else.
Your AI usage is billed by your own provider, from your own account, at their prices — the €1.99 covers My Assistant itself.
This signs this device out and frees one of your 3 device spots. Your account, subscription, API keys and credit stay saved. The chats on this device stay stored here for your account and show again when you sign in here with your email.
Tell us what's wrong. Only this reply and your message just before it come to us, so we can review it.
My Assistant is a personal AI chat tool. It can help with everyday questions and conversation, but it does not replace professional advice (medical, legal, financial) and guarantees no specific outcome.
My Assistant is for adults. You must be 18 or older to create an account, subscribe, buy credit or use the app. By ticking the box to accept these Terms when you sign up, and by using My Assistant, you confirm that you are 18 or older and agree to these Terms.
By creating an account and using My Assistant, you agree to use it only for lawful purposes. You agree not to use it for anything illegal, or to harm, harass, threaten, deceive or exploit anyone — for example fraud or scams, malware or hacking, content that sexualises minors, or breaking other people's rights. You also follow the usage rules of the AI provider behind your assistant. You are responsible for how you use its replies. An account that breaks these rules may be suspended or closed.
My Assistant is an AI system: every reply is generated by artificial intelligence, not written by a person. Airi and Kai are AI personas.
Requests answered by My Assistant itself (free preview and credit) pass an automated safety check first. Requests in illegal or dangerous categories are not answered, and after 3 of them in 30 days, My Assistant replies pause on that account for up to 30 days; your own API key keeps working under your provider's own rules.
We store only what your account needs — the full list is in Privacy: your email, first name, assistant, subscription and credit status, device list, invite code with friend counts, any API keys you add (stored encrypted), and the dates you accepted these Terms. We set no cookies. Your chats, reminders, period tracker and files stay on your own devices and sync directly between them — device to device, never through our servers; you can also export and import them yourself.
New accounts start with a short free preview: a few chats answered by My Assistant. After that, My Assistant costs €1.99 per month and renews automatically each month — paid through PayPal on the web version and the Microsoft Store app, or through Google Play in the Google Play app. While your subscription is active, everything works with no message limits. Cancel anytime in ⚙️ Settings → Cancel my subscription (Google Play: in Google Play → Subscriptions): you keep full access until the end of the month you've already paid for, and nothing more is charged. Deleting your account cancels your subscription too. One account works on up to 3 of your devices.
To subscribe or buy credit, you ask for it to start right away (a tick box before you pay), which ends your 14-day right of withdrawal. Every subscription and top-up is confirmed by email, and so is a cancellation made in the app. Cancel your subscription anytime in ⚙️ Settings → Your subscription → Cancel my subscription (a Google Play subscription: in Google Play → Subscriptions): billing stops, and you keep full access until the end of the month already paid.
You connect your own API key from the AI provider of your choice. When you add a key, My Assistant checks it once with that provider — a free check that uses no AI — and stores it encrypted. Your usage is billed by that provider, from your own account, under its own terms and prices.
My Assistant credit is prepaid use of the built-in assistant, bought on top of your subscription and spent only on My Assistant replies, while your subscription is active — through PayPal (any amount from €5 to €200) or, in the Google Play app, through Google Play (€5, €10, €15, €25 or €50). By choosing to use it right away, you agree that your 14-day right to cancel the purchase ends. Auto top-up (PayPal) is optional: once you switch it on, it charges your saved PayPal for your chosen amount whenever your credit drops below €1. For 30 days after your first credit purchase, credit can be spent up to €20 a day. Credit stays on your account; an account can be deleted once its credit is used up.
Your devices signed in to your account sync directly with each other (WebRTC, encrypted end to end) whenever two of them are open at the same time. Our server only introduces them — which of your devices are online, and the network details they need to connect — and stores none of it; your data goes device to device over your own connection.
Every account has a personal invite link. When a new account is created through your link and makes its first payment, you receive one free month (30 days) of My Assistant if your own subscription is running at that moment (or paused during free months you earned before) — with no limit on the number of friends — or, if you have no subscription running, 5 more free starter chats. Free months start after the period you have already paid for: a PayPal subscription is paused during your free months and restarts by itself afterwards; a Google Play subscription's next charge moves later, by up to a year at a time, and any further months are added after that. Free months and chats have no cash value and can't be transferred. Rewards obtained through fraud or through payments that are refunded may be withdrawn.
Replies are written by the AI behind your assistant and can sometimes be wrong. Tap ⚑ Report under any reply that is offensive, harmful or misleading — every report is reviewed.
My Assistant is provided as it is. AI replies can be wrong or incomplete — check anything important. We are not responsible for outages of AI providers, for what you do with replies, or for the charges your own AI provider bills for your key — set a spending limit with your provider. Your chats are stored on your own devices: keep two of them synced, or export a copy, to have a backup. Nothing here limits your rights as a consumer under the law.
We may update these Terms or the price with at least 30 days' notice in the app; a new price applies from your next renewal, and you can cancel before it. We may suspend or close an account that breaks these Terms. If My Assistant ever closes, we'll tell you at least 30 days ahead and refund any unused credit.
CM2C — https://www.cm2c.net
My Assistant is published by a micro-entrepreneur registered in France — SIREN 927924621. The site is hosted by Cloudflare, Inc., 101 Townsend Street, San Francisco, CA 94107, USA. French law applies.
contact@aplusz.app
My Assistant is purely your platform: the API key you use is yours — bought by you, controlled by you. Only if you don't know how to get an API key, you can top up My Assistant credit instead, purely as an alternative.
We set no cookies. No data sharing. We keep only the essentials your sign-in and convenience need — nothing more.
Only what your account needs, tied to your email, so your account comes back on any of your devices:
PayPal and Google Play order references are kept with your email for refunds: orders 30 days, payment references up to 13 months. A key only ever goes to its own provider: to check it when you add it, to show its balance and to write your replies.
My Assistant is your platform: you bring your own API key — or use My Assistant credit — and we give you a clear interface to use it. Your conversations are never stored on our servers: each message passes straight through to the AI that answers it.
In Settings → Delete account, type DELETE and confirm. At once, your subscription (PayPal or Google Play) is cancelled so nothing more is charged, and everything stored with your account — email, assistant, subscription link, device list, invite code and every saved API key — is permanently deleted, along with the chats and files on that device; your other devices' sync links close at once, and they are signed out the next time they connect. An account with My Assistant credit left can be deleted once that credit is used up. Only payment references (up to 13 months, for refunds) and any reply you chose to report (up to 180 days) remain until they expire.
My Assistant is run by a micro-entrepreneur registered in France (SIREN 927924621), responsible for the personal data described here. Contact: contact@aplusz.app.
To run your account, sign-ins, device sync introductions, subscription and credit — the service you asked for (contract). To keep it safe — sign-in codes, safety checks, reports and limits against misuse — our legitimate interest in a secure service. To keep payment records for refunds and accounting — legal obligations.
Cloudflare (hosting, sign-in and receipt emails, and the sync service that introduces your devices to each other), PayPal (payments on the web), Google (payments in the Google Play app) and OpenAI (writes My Assistant replies in the free preview and with My Assistant credit, after a quick automated safety check). Transfers outside the EU are covered by the EU–US Data Privacy Framework or the European Commission's standard contractual clauses. With your own API key, your messages go to the provider you chose, under your own agreement with them.
Your account is kept while you use My Assistant and deleted as soon as you delete it. Accounts with no subscription, no credit and no use for 24 months are deleted automatically. Payment references: up to 13 months; a reply you reported: up to 180 days.
You can see, correct, export and delete your data anytime (Settings: your name, Export, Delete account) and object to any use of it — just write to contact@aplusz.app. You can also contact the CNIL, France's data protection authority (www.cnil.fr).
We set no cookies, ever. No chat storage on our servers, ever — your devices sync straight to each other, and only a reply you choose to report is ever kept by us. No data sharing, ever — PayPal or Google Play only handles your payment. Deleting your account removes it permanently. My Assistant is your platform — your own API key or My Assistant credit, always your choice.
Tap any day on the calendar to log a different date.
Ovulation and fertile days are estimates from your own history — helpful for planning, but not a method of contraception. Everything here stays on your own devices.
Your reminders stay on your own devices only. They fire while My Assistant is open or running here — anything that came due while it was closed pops up the moment you open it.
Your chats are stored on your own devices — tap one to open it.
Replies you save with 🔖 Save appear here, on all your devices, and are included when you export your history.
Shown at the top of your chat. Leave it empty to show your email instead.
Saved ✓
Your account works on up to 3 of your devices at a time. Remove one here — or simply pick one to sign out when you log in on a new device.
Your devices sync straight to each other — chats, saved replies, reminders, files and more go device to device over your own Wi-Fi or mobile data, never through our servers. Open My Assistant on two of your devices at the same time and they catch up in seconds; then every new message arrives live.
Share your link. While your subscription is running, every friend who signs up through it and makes a first payment gives you a free month of My Assistant — no limit: 12 friends, a whole year free. Before you subscribe, each paying friend gives you 5 more free chats.
My Assistant also works in any browser — on a computer, tablet or phone. Open the web version at this address and sign in with the same email: your account, keys and credit are all there. Each device uses one of your 3 spots.
Balances of DeepSeek, OpenRouter, Moonshot (Kimi) and SiliconFlow keys are read from your provider and shown in this currency.
Choose who answers your messages. One answers at a time — switch anytime.
Go back to the chat and keep going.
Paste a key from your AI provider: My Assistant recognises the provider, checks the key with it (a free check, no AI used) and stores it encrypted with your account, ready on all your devices. Add as many as you like and switch the active one anytime.
Local test: a key starting with test- is added without a provider check.
My Assistant credit comes on top of your subscription — subscribe first, then top up anytime.
Local test only — PayPal's real button appears here on the live site.
Export saves your chats, files, reminders and period log in one file, as a backup. Import on any of your devices adds the chats and files, and restores the reminders and period log from the file.
Permanently deletes your email, assistant, subscription link, device list and every saved API key. Your subscription is cancelled (PayPal or Google Play), so nothing more is charged. An account with My Assistant credit left can be deleted once that credit is used up.
No password needed. Type your email (and your first name if you like), pick a Female or Male assistant the first time, and enter the 6-digit code we email you. Each new device asks for its own code once; after that it opens straight in. Use the same email on up to 3 of your devices and everything comes back — nothing else to re-enter. On a computer or any browser, open the web version at myassistant.aplusz.app and sign in with the same email; ⬇ Install adds it to your home screen or desktop like an app.
Connect your own key from the provider you already use — OpenAI, Anthropic (Claude), Google Gemini, DeepSeek, Mistral, xAI (Grok), Groq, OpenRouter, Moonshot (Kimi) or SiliconFlow — in ⚙️ Settings. Just paste it: My Assistant recognises the provider, checks the key with it (a free check, no AI used), stores it encrypted with your account, ready on all your devices, and picks a model from your provider's list — Change model switches it anytime. Add as many keys as you like and switch the active one anytime. DeepSeek, OpenRouter, Moonshot and SiliconFlow keys show their balance next to the key, in the currency you pick in Settings.
New to API keys? It's easier than it sounds: an API key is a personal access code for an AI company. Create one on its website in about two minutes, add a few dollars of credit there, then paste it in ⚙️ Settings once. You pay the AI company only for what you actually use — often just cents a month — and with your own key you get every feature for only €1.99 a month.
AI providers charge for every word sent and received, and a chat API remembers nothing: each new message has to carry the conversation with it. Many chat apps resend the whole chat every time, so every message costs more than the one before. My Assistant keeps every request lean:
The longer your chats, the bigger the saving. Same GPT-5 mini, same use: an app that resends the whole chat costs about $2.80 a month with 40-message chats and about $5.90 with 100-message chats — My Assistant stays around $0.90–1.40, however long your chats grow.
About 30 messages a day, replies of about 300 words.
| Way of using AI | Per month |
|---|---|
| ChatGPT Plus (ChatGPT's own app) | $20 |
| ChatGPT Go (ChatGPT's own app) | $8 |
| My Assistant + GPT-5 nano | €1.99 + about $0.20–0.30 |
| My Assistant + DeepSeek V4.1 Flash | €1.99 + about $0.30–1.25 |
| My Assistant + GPT-5 mini | €1.99 + about $0.90–1.40 |
| My Assistant + GPT-5.4 mini | €1.99 + about $2.10–3.65 |
Provider prices as of October 2026; your provider's own price list always rules. The AI companies' own app plans include extras of their own (images, voice…); this compares everyday text chat.
No API key? Choose My Assistant in ⚙️ Settings → Your AI and top up My Assistant credit: with PayPal (€5, €10, €15 or any amount from €5 to €200), or with Google Play in the Google Play app (€5, €10, €15, €25 or €50). Your credit shows under your name while you chat, and it's spent only on My Assistant replies — your own key and your credit never mix. €5 covers about 3,700 everyday messages. With PayPal, turn on Auto top-up: it adds your chosen amount whenever your credit drops below €1. Your own API key remains the main way to use the app: switch between the two anytime.
Type in English, French, Japanese or any other language — the assistant replies in the language of your latest message, so you can switch anytime.
Everything you say in chat stays on your own devices, never on our servers, and your devices keep each other up to date. Open My Assistant on two of your devices at the same time: chats, pins, titles, saved replies, reminders, check-ins, files and the period tracker go straight from one device to the other over your own Wi-Fi or mobile data, encrypted end to end. Only new changes are sent, so it takes seconds; while both stay open, every new message arrives live, and a third device catches up from either of them. Settings shows which of your devices are linked right now. Export / Import in Settings saves a backup file whenever you like.
Tell your assistant about an exam on Friday, a trip or a big day coming up, and it adds a check-in note to its reply — no extra AI use. On the day it picks (1 to 14 days later, from 8:00 in the morning), it asks in the same chat: "How did the exam go?" — when you open My Assistant, or while it's open. Turn Follow-ups on or off in ⚙️ Settings → Check-ins.
Stored with your account, under your email: your assistant, subscription, credit, encrypted API keys, device list and a few settings — the full list is in 🔒 Privacy. Delete account (in Settings) removes it all permanently; an account with My Assistant credit left can be deleted once that credit is used up.
Hover over or tap a message to see its options. Copy copies its text. Edit one of your messages to resend it — the reply after it is written again. Try again writes a new reply. 🔖 Save keeps a reply in 🔖 Saved replies. Delete hides a message from the chat on all your devices and leaves it out of what your AI reads next; it stays in your exported history.
If a reply is offensive, harmful or simply wrong, tap ⚑ Report under it, pick what's wrong and send. The reply is hidden right there (tap Show reply to see it again), and every report is reviewed.
🌐 opens the language menu, 🎨 changes the color theme, 🏠 takes you home from any page, ➕ starts a new chat, 💬 lists all your chats, ⚙️ opens Settings, 🔖 opens your saved replies, ↺ signs this device out (your account stays saved), 🌸 opens your period tracker (female accounts), ⌚ opens your full-screen watch faces (male accounts), 🔒 opens the Privacy page, 🔔 opens your reminders, and ❓ opens this guide. While a page is open, its icon stays highlighted — tap it again to go back. Icons stay faded so they don't cover your chat: hover over them on a computer, or tap once on a phone to show them, then tap again to open.
Tap 📎 Attach above the message box, drag files onto the chat, or paste them (up to 100 MB each). Each file shows its real type (even if it was renamed) with an ✕ to remove it, or Remove all. Your AI reads up to 20 files per message: text and code files up to 2 MB, and images up to 5 MB (with a model that reads images); other files are kept with your chat and sent by name only. Files stay on your own devices and are sent only with your message, to the AI that answers it, and to your other devices when they sync. When the assistant edits a page or writes code, it comes back as a file — Download, Preview or Copy in one tap.
Tap 🌸 to open your tracker. Log the day your period starts and the day it ends. The calendar then shows your expected next period, your estimated ovulation day and fertile window, your own average lengths (typical 5 and 28 days until you log your own), and tips for each phase of your cycle. Your data stays on your own devices, synced between them.
Tap ⌚ for a full-screen clock that keeps your screen on: the Wristwatch, or Breathe — 4 seconds in through the nose, 7 seconds out through the mouth. Move the mouse or tap once to show the controls, then tap Wristwatch or Breathe; ✕ or Esc closes it.
Tap 🔔, write what to remember, pick a date and time (or tap In 10 min, In 1 hour, Tomorrow 9:00). With the switch On, each reminder pops up on time with a notification and a chime while My Assistant is open or running on this device; anything due while it was closed pops up as soon as you open it. Switch Off to pause. Your reminders stay on your own devices only, synced between them.
Tap ➕ to start a new chat whenever you like — useful for a new topic. Tap 💬 to see all your chats and open any of them; tap 📌 to pin a chat to the top (your latest pin sits highest). With your own API key or My Assistant credit, your AI writes a short title for each chat after your 1st, 5th and 15th message, then every 10 messages, so the title follows the topic. Every chat stays on your own devices.
New accounts start with a free preview: a few chats answered by My Assistant. After that, €1.99 a month unlocks everything — your own API key, AI chat titles and the option to buy My Assistant credit — with no message limits, on up to 3 of your devices, through PayPal on the web and the Microsoft Store app, or through Google Play in the Google Play app. It renews by itself. Cancel anytime in ⚙️ Settings → Cancel my subscription (Google Play: in Google Play → Subscriptions); you keep full access until the end of the month you paid for. See your subscription and devices in ⚙️ Settings.
In ⚙️ Settings → Invite friends, copy or share your personal link. While your subscription is running, every friend who signs up through it and makes a first payment gives you a free month of My Assistant, with no limit: 12 friends, a whole year; 36 friends, three years. Free months begin after the month you've already paid for. Before you subscribe, each paying friend gives you 5 more free chats instead. Settings shows your friends, your months, your extra chats and your free-until date.