Lumeo. Your second brain
PIOTR RYSZARD PRUS Productivity iPhoneiPadiPod touch
Lumeo. Your second brain is a free Productivity app for iPhone and iPad by PIOTR RYSZARD PRUS. Requires iOS 17.0. Updated October 17, 2026.
- Price
- Free
- on the App Store
- Size
- 61 MB
- Age 4+
- Updated
- Oct 17
- 2026 · v1.4.0
Screenshots
About Lumeo. Your second brain
Thoughts in, illumination out. You have the thought in the car, in the shower, halfway through something else. Then it is gone. Lumeo catches it in a sentence of speech, files it properly, and quietly connects it to everything else you have ever told it. Speak Tap the orb and talk. Lumeo transcribes you, strips the ums, gives the thought a title and tags, and files it. There is no form to fill in and nothing to organise. Connect Every thought is placed near the ones it belongs with. A remark you made in March surfaces beside the problem you are chewing on today, because they are about the same thing. Illuminate Where thoughts cluster, Lumeo proposes the idea sitting between them. Keep it and it becomes a thought of its own. Drop it and it never comes back. Ask your own memory Speak a question and Lumeo answers from your own memory and nothing else. No web search, no general knowledge, no confident invention. Every answer shows the thoughts it was built from, so you can open them and check. When your notes genuinely do not cover something, it says so. That is a good answer, not a failure. Your constellation Every thought is a star and every connection a line of light between two of them. Clusters are the subjects you keep returning to, whether or not you knew you had them. Pan and zoom it like a map. Who it is for People with too many thoughts and no system for them. Founders, writers, researchers, product people, developers. You do not need to know what a knowledge graph is, own a vault, or learn markdown. Lumeo is free to use, with a subscription for a larger monthly allowance of AI actions. Terms of Use: https://lumeo.broda-labs.workers.dev/terms Privacy Policy: https://lumeo.broda-labs.workers.dev/privacy
What’s new
Version 1.4.0 · Updated October 17, 2026
Start a voice note straight from your home screen with the new Lumeo widget, on iPhone and Android. Ask now has its own tab and a calmer screen: one field to type or speak your question, and example questions drifting past that you can tap. It searches only your notes and tells you when the answer isn't there. Your to-dos moved to the bell at the top of Home. Tips on Home can now be closed.
App privacy
The developer, PIOTR RYSZARD PRUS, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: User ID
- Contact Info: Email Address
- User Content: Audio Data, Other User Content
Used for: Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Other Diagnostic Data
Used for: Analytics, App Functionality
Alternatives to Lumeo. Your second brain
Looking for apps like Lumeo. Your second brain? Here are 6 similar apps on the App Store. The highest rated is BB - Screen Time & App Blocker (4.9/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Lumeo. Your second brain | – | Free | October 17, 2026 | |
| Ay | – | Free | Oct 25, 2026 | Compare |
| nextappcon | – | Free | Oct 2, 2026 | Compare |
| Zelt | – | Free | Oct 19, 2026 | Compare |
| BB - Screen Time & App Blocker | 4.9 / 5 (402) | Free | Apr 3, 2025 | Compare |
| Herdwatch Livestock Management | 3.6 / 5 (19) | Free | Aug 25, 2026 | Compare |
| Bringme the official app | 1.0 / 5 (3) | Free | Jun 27, 2026 | Compare |