Blackbox Journal TestFlight - A private, secure journal where your data is yours alone.

Hey everyone!

I’m an indie iOS dev, and I’m looking for testers for my new app: Blackbox Journal — a journaling app built from the ground up for privacy and on-device features. No data leaves your device, ever.

What makes Blackbox Journal different?

•	Brain dumps for those days when you just need to vent—no pressure to write a full entry

• Audio journaling: record your thoughts instead of typing; audio entries are clearly marked for easy access

• On-device mood analysis: After 7 days, get a weekly mood check and insights—no cloud, no sharing, all AI stays local

• Full privacy: All your data, entries, audio, and mood checks stay only on your device

• Favorite entries: Star your most important moments to revisit them later

• Affirmations: Get helpful, categorized affirmations tailored to your needs

• Journal prompts: Stuck? Get inspired with thoughtful prompts

• No logins, no accounts, no servers—ever

Want to help shape Blackbox Journal?

👉 Join the TestFlight beta here: https://testflight.apple.com/join/XuECJt1m

All feedback is welcome—bugs, UX polish, feature ideas, or security concerns.

Thank you for helping me build a journaling app where your thoughts actually stay yours.

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Feedback

Hey! I love the concept and focus on privacy and keeping everything on-device, or your own storage. I'm going to test it on my iPhone 16 Pro Max running iOS 26 Developer Preview. Send me a message here or on GitHub (I have the same username) if you have a Slack or Discord or somewhere we can chat if you'd like more specific feedback, suggestions, and for me to do some bug-testing. It's easier for me than using forums. I might be able to help you translate to Russian as well, so much as my time allows.