Who we are
MuseTip (甲想 in Chinese) is an AI nail stylist app built and run by independent developer Ruby Chen ("we"). It is distributed through the Apple App Store.
What we process and why
- Photos you pick or take (nail inspiration, your hand, and the clue pictures you give "Create with Muse" or "Match my outfit" — an outfit or any picture): sent through our server to AI services to analyse the design, design a set for you and draw it onto your hand; not stored on our server. Your hand photo is also kept on your phone so every look can reuse it.
- Pictures you upload as stickers or pieces in the Nail Studio: a picture on a transparent or plain background is cut out on your phone and never leaves it; any other photo (a manicure on a hand, say) is sent through our server to an AI service, which picks out the pieces in it and draws each on its own, and is not kept. Each piece is then sent to an AI service to get a short name, so you and Muse, the app's AI stylist, can refer to it, and is kept in My pieces on your phone.
- Nail profile (length, preferred shape, skin tone): stored on your phone; sent with analysis, chat and design requests so advice fits your hands. When Muse designs a set for you, the names and techniques of looks you saved or had done go with it, as a guide to your taste.
- Text you type (edit requests, chat, the sentence and tags you give a design): sent to AI services to carry out the request; not stored.
- Looks you share (the nail-tip image and the Nail Card text, never your hand photo): uploaded when you open the share screen so friends can open the same look; anyone with the link can view it. We count how often the link is opened and tried on.
- Usage counts: which entry on Home you tap and how far the hand-photo and design steps get (never the pictures or the text), with a random install ID the app generates itself and that is not tied to your identity or device.
- Technical logs (request time, IP address, errors, possibly a short excerpt of request text): kept by our providers for troubleshooting and deleted on their retention schedule.
- Crash reports: provided to us by Apple when you choose to share analytics with app developers in your iPhone settings; beta testers' TestFlight feedback is provided by Apple too.
We don't collect your name, phone number, email, contacts or precise location, don't use the advertising identifier (IDFA), and don't track you across apps.
Camera and photos
Used only when you take a hand photo, choose an inspiration picture, give a clue picture for a design, or upload a sticker or piece in the Nail Studio. You can turn access off at any time in Settings → MuseTip.
Asking before anything goes to an AI service
The first time your photos or what you write to Muse need to go to the AI services below, the app tells you who receives them and why, and sends nothing until you tap Allow. If you don't allow it, the parts that need no AI (such as making nails by hand in the Nail Studio) still work. You can withdraw or give permission again any time under Me → Privacy.
Service providers
Supabase (server, storage, database), OpenAI (reading inspiration and clue pictures; designing sets from your clues, including drawing one straight from your clue pictures; image generation and editing, including taking the manicure you had on off your hand photo, and picking the pieces out of a photo you upload in the Nail Studio; checking whether the nails in your hand photo are already done; writing the Nail Card), Alibaba Cloud Model Studio / Qwen (chat and text edits; naming your pieces; reading pictures — including checking your hand photo — designing and writing the Nail Card when OpenAI is unavailable), Replicate (locating each nail in the hand photo), and Apple (App Store and TestFlight distribution, crash reports, beta feedback). Each processes data under its own privacy policy; some of their servers are outside mainland China. We never sell, rent or trade your information or use it for advertising.
Your choices
- Delete a saved look by long-pressing it in Saved.
- Withdraw your permission for the AI services under Me → Privacy; the app asks again before the next request.
- Erase all MuseTip data on the phone under Me → Privacy → "Erase MuseTip data on this phone", or by deleting the app.
- To remove a shared look, send us its link and we will delete it.
- We answer other requests within 15 business days.
Children
MuseTip is not directed to children under 14.
Changes
We update this policy and its effective date when features change, and tell you in the app about significant changes.
Contact
Email support@musetip.app. On the beta you can also take a screenshot in MuseTip and choose "Share Beta Feedback".