Yes — completely free, forever. No subscription, no free trial, no premium tier. The app is MIT-licensed and open source. You can download it, modify it, and use it however you like.

No account required — ever. The app works entirely offline. Your data stays on your device. An internet connection is only needed when you actively use the AI features (which require an API key you control).

By default the app uses Ollama (local, no key needed). Optionally you can switch to Google Gemini, Anthropic Claude, OpenAI GPT-4o, or Groq in Settings — all have free tiers. Your API key never leaves your device.

macOS: Apple Silicon (arm64 DMG), Intel / 2019 and older (x64 DMG), and a Universal build that runs on both.
Windows: One installer that auto-detects your CPU — works on 64-bit (x64), 32-bit (ia32), and ARM64 devices.
Linux: AppImage for x64 (works on Ubuntu, Debian, Fedora, Deepin, UOS, Kylin, and most other distros) · AppImage for ARM64 · pacman package for Arch / Manjaro / EndeavourOS.

A mobile version for iOS and Android is planned. Not sure which Mac you have? Apple menu → About This Mac. "Apple M1/M2/M3/M4" = arm64. "Intel Core" = x64. If you're unsure, grab the Universal DMG — it works on everything.

The six tests are adapted from well-established clinical instruments used in psychoeducational assessments: Digit Span (WISC/WAIS), AX-CPT, Symbol Search, Matrix Reasoning, Reading Comprehension, and Task Switching. The app is an educational tool, not a medical device — results are not a formal diagnosis. For a clinical assessment, consult a licensed psychologist.

Nope. The app uses Ollama by default — a free, local AI that runs entirely on your machine. No API key, no account, no internet needed for AI. Just install Ollama, pull a model (e.g. ollama pull llama3.2), and every AI feature works out of the box. If you want to use a cloud provider (Gemini, Claude, GPT-4o, Groq) you can switch in Settings — but it's completely optional.

Yes! The project is open source under the MIT License. You can open an issue for bug reports or feature requests, or submit a pull request. All contributions are welcome.

There are a few reasons this can happen — find yours below:

❶ "App is damaged and can't be opened" (most common)
macOS quarantines apps not signed with a paid Apple certificate. Fix: open Terminal and run:
xattr -cr "/Applications/Ur Study Bro.app"
Then open the app normally. Alternatively: right-click the app → Open → click Open in the dialog.

❷ "Ur Study Bro was blocked" in System Settings
Go to System Settings → Privacy & Security, scroll down, and click Open Anyway next to the app name.

❸ App bounces in the Dock and closes immediately
You may be on an Intel Mac running the wrong build. Download the x64 (Intel) version from the releases page — it's a separate DMG labelled x64.dmg.

❹ App opens but instantly crashes / blank window
Make sure you're on macOS 11 Big Sur or later. Electron 35 doesn't support older macOS versions.

❺ Nothing happens when you double-click
Make sure you dragged the app out of the DMG into your Applications folder before opening it. Running it from inside the DMG can cause silent failures.

When you start a timer with Focus Guard on, you choose which apps are allowed (e.g. your notes app, a browser). Every 2 seconds, the system checks which app is in the foreground. If it's not on your allowed list, the app hides it at the system level and brings Ur Study Bro back to the front. On macOS, this uses AppleScript to set the app's visibility. You can only disable Focus Guard by resetting the timer — and sessions ended this way don't earn points.