MOSS Studio · iPhone and iPad
Privacy Policy
Last updated: 17 September 2026
MOSS Studio is a sketchpad for iPhone and iPad, made by Brainfruit Studio, Inc. ("we", "us"). This page covers the app, and nothing else. MOSS Sprite, the drawing toy in your browser, has its own policy.
The short version
- Your drawings stay on your device. We never see them, unless you send us a bug report yourself.
- MOSS Studio has no accounts. We never ask for your name, your email address, or your age.
- No advertisements. No tracking. We do not sell data.
- Two things leave your device: anonymous usage counts, which you can turn off, and a bug report, which only you can send.
What stays on your device
MOSS Studio keeps all of your work on your device, in the app's own storage:
- Your drawings, sketchpads, and drafts
- Your brushes, palettes, and favorites
- Your settings
- Sounds you record with the Boombox block
- The diagnostic log
We have no copy of any of it. If you delete MOSS Studio, all of it goes with the app. You can read and copy your own files with the Files app.
What leaves, and when
Anonymous usage counts
MOSS Studio counts which brushes and features get used, so we know what to improve. Turn it off at any time: Settings → Share usage anonymously. Turn it off and the app sends nothing and deletes anything waiting to be sent. In the EEA, the UK, and Switzerland, MOSS Studio asks you on first launch and sends nothing until you say yes.
Each report holds:
- Counts of actions in one session, such as how many times a tool was opened
- Which brushes were used, and for how long
- The app version, the iOS version, the device model, and how much memory it has
- When the session started, rounded to the hour, and how long it ran, rounded to ten seconds
- The week you installed the app, and how old the install is, in broad bands
- Speed measurements, in broad bands
- Your country, as a two-letter code, so we know which languages to care about. Not your town, your region, your postal code, or your time zone.
The only identifier is a random number. It is not your Apple Account, not the advertising identifier, and not your device ID. It is made on your device, it dies when you delete the app, and it makes itself new every 30 days. Nothing else in the world knows this number, so it cannot connect you to anything outside MOSS Studio.
Our server drops your IP address before it writes anything down.
These reports never hold your drawings, your stroke paths, your typed text, or any name you gave a sketchpad, a brush, or a palette.
Bug reports
MOSS Studio sends a bug report only when you write one and tap send. The report holds:
- What you typed in the box
- The last part of the diagnostic log
- Your device model, the app version, the iOS version, memory use, the frame rate, and the speed tier
- The size of your canvas, and whether you were painting or editing
- The name of the brush you had in hand. If you renamed that brush, we get the name you gave it.
- A short code for the sketchpad you were in. Never its name.
- A picture of your canvas, if you leave that switch on. Turn it off and the picture is never even taken.
Before you send, the panel tells you that the report carries recent logs and your device details, and it puts the switch for the canvas picture right below the box. The list above is the whole of it.
We read a report to fix the problem you told us about, and for nothing else. Do not type anything private in the box, and do not put anything private in a brush name you might have in hand when you send one.
What MOSS Studio never sends
- Your drawings, except the one picture in a bug report you send yourself
- The paths of your strokes
- Any sound you record
- Your photos, or any information about them
- Your name, email address, phone number, or address
- Your location
- Your contacts
- Anything a data broker or an advertiser could buy
MOSS Studio has no advertisements and no third-party analytics kit. Nothing we make follows you to other apps or websites.
Permissions MOSS Studio asks for
MOSS Studio asks for these only at the moment you use the feature, and it works without them.
| Permission | Why | What leaves the device |
|---|---|---|
| Microphone | The Boombox block records a short sound you paint with | Nothing. The sound stays on the device. |
| Camera | You can start a canvas from a photo you take | Nothing. The photo stays on the device. |
| Photos (add) | Save Image puts your canvas in your photo library | Nothing. MOSS Studio writes to Photos and never reads it. |
When you add a photo to a canvas, iOS shows you the picker and hands MOSS Studio only the picture you chose. The app never sees the rest of your library.
Who else handles this
These companies act for us. Neither may use your information for anything of their own.
- Cloudflare runs our server and our storage. Usage counts and bug reports land there.
- Discord tells us when a new bug report arrives, and shows us what it holds.
Nobody else receives anything from the app.
Children
MOSS Studio is made for everybody, and children use it. We built it so that a child can use the app without giving anything away. It asks for no personal information, has no sign-in, shows no advertisements, has no tracking, and has no chat, comments, or way to meet other people. The usage counts hold no personal information.
Nothing a child draws goes anywhere on its own. MOSS Studio cannot post, publish, or send a drawing, and there is nobody on the other end of it to see one.
A bug report is the one exception, because a person writes it and it can carry a picture of the canvas. The switch for that picture sits on the same panel. Parents: if you do not want your child to send one, tell them not to use Report bug.
If a child sent us a bug report you want removed, write to hey@brainfruit.studio and we will delete it.
How long we keep it
- Usage counts: 30 days
- Bug reports: 7 days. We read it, we fix the problem, we delete it.
Write to hey@brainfruit.studio and we will delete anything we hold that came from you. We do not need a reason.
Your choices
- Stop the usage counts. Settings → Share usage anonymously, off. This also deletes what is waiting to be sent.
- Send us nothing at all. Turn the toggle off and do not use Report bug.
- Delete everything on the device. Delete the app.
If you live in the European Economic Area, the United Kingdom, or a US state with a privacy law, you can ask us what we hold about you, ask us to correct it, ask us to delete it, and complain to your data protection authority. Write to hey@brainfruit.studio. Please tell us the date and the device, because there is no name on any record and this is the only way we can find it.
For people in the EEA, the UK, and Switzerland: MOSS Studio asks you on first launch whether to share usage counts, and sends nothing until you answer. Our lawful basis is your consent, and you can take it back at any time in Settings. Our lawful basis for a bug report is your request for help.
Changes to this page
If we change what MOSS Studio sends, we will change this page and move the date at the top. If the change is large, we will say so in the app.
Contact
Brainfruit Studio, Inc.
136 E. Rosemary Street, Suite 100
Chapel Hill, NC 27514, USA
hey@brainfruit.studio
Painting in a browser instead? Read the MOSS Sprite privacy policy.