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StemStudio AI

Mobile IDE for StemJSON
Vasyl Krychun · Developer Tools
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App info

Developer
Vasyl Krychun
Category
Developer Tools, Productivity
Released
Oct 10, 2026
Version
1.1 (Oct 19, 2026)
Price
Free
Size
26.0 MB
Requires
iOS 18.0
Age rating
4+
Languages
English

In-app purchases

none
Current prices, App Store US.

About StemStudio AI

StemStudio AI is for people who create mobile apps. Describe a part of an app in plain words, like a banner, a card or a whole screen, and AI creates it. A minute or two later you can preview it on your iPhone or iPad. It is not a picture. It works, with live data and buttons you can press. The same file then goes into your own app, where it runs like any other feature. Each thing you make is one small file (.stem), written in StemJSON. StemJSON is a plain, readable format that phones can draw as a normal native screen. WHAT THE FILE IS FOR Put it in your own app. Apps read these files with StemRuntime, so the file becomes a native part of your mobile app. Share it for review. Send the .stem file to your client or your team. They open it in StemStudio and try your draft before anyone builds it for real. Keep it as your draft. Ask for changes in plain words, or edit the .stem file…
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