Lumin vs Lumeo. Your second brain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lumin
Edit, share, and collaborate on PDF documents in the cloud. This app offers a suite of tools for annotating, organizing, and signing PDFs, with seamless integration for cloud storage and real-time collaboration.
- Seamless document management
- Cloud integration and auto-save
- Versatile editing and annotation tools
- Document organization and conversion
- Pre-designed templates
- Real-time collaboration
- eSignatures and form filling
- Scanning to PDF
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Lumin for iOS allows you to edit and sync to your Google documents in seconds. Collaborate with colleagues in real-time with a diverse set of editing tools. Lumin auto-saves your changes and syncs them to all your devices. Connect your Google account and stay on top of your documents. You can effortlessly view and share files with anybody via email or shareable links. TRUSTED BY MILLIONS Join over 100 million Lumin users worldwide who use our app to edit, share, and collaborate in the cloud. From note-taking and project management to client onboarding and legal document review, Lumin empowers you across industries. KEY FEATURES - Seamless document management: Import from your favorite storage (Dropbox, Google Drive, OneDrive), edit, and share PDFs effortlessly. - Cloud integration: Automatically save changes and sync across devices. - Versatile editing tools: Highlight, annotate, draw on PDFs and more. - Document organization: Organize, extract pages, merge files, convert to/from PDF,... - Pre-designed templates: Choose from various templates for various purposes and industries, such as real estate, education, job application, etc. - Collaboration: Share files and receive real-time notifications. - eSignatures: Sign and fill out forms with ease. - Scanning: Convert paper documents into portable PDFs. LUMIN IN THE REVIEWS “I use Lumin to mark up PDF drawings and send them to my subcontractors. In my role, time is of the essence. Lumin provides me with a tool to make collaboration and feedback easy.” – Construction site manager, US “We have been using Lumin for a little over two years, and it's been amazing. Using Lumin on-the-go and in-office allows us better turnaround time for our patients' care.” – Director of Services and Operations, US “It s very useful and handful for studying and I feel like they make good improvements with each upgrade. I use it for studying, it's cool that I can connect my university Google Drive to the Lumin account and I can edit, draw, write, highlight and add comments and they always get saved.” – Individual user “Too loud. You can open and edit texts from any device, everything is saved automatically, quickly. Access is very fast. The options for editing documents are diverse.” – Individual user Terms & conditions: https://www.luminpdf.com/terms-of-use/
Lumeo. Your second brain
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Lumin at none against Lumeo. Your second brain's 1. Lumeo. Your second brain's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lumeo. Your second brain sells 1 in-app purchase, starting at $2.99 per month. Lumin asks for nothing beyond the download.
Lumin ships an update weekly, Lumeo. Your second brain every 4 days. Both last shipped on October 29, 2026.
| Parameter | Lumin | Lumeo. Your second brain |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (931 ratings) — better | — |
| Positive reviews | 32.1% of reviews | — |
| Number of ratings | 931 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 288 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrolabs Limited | PIOTR RYSZARD PRUS |
Bugs and requests
Lumin
Reported bugs
4 issues- Lost work and unsaved changes
- Inability to open/access files
- Frequent login issues
- Compatibility problems on mobile
Requested features
4 requests- Offline mode support
- Split-screen functionality
- Improved highlight/annotation tools
- Better Google Drive integration
Lumeo. Your second brain
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lumin
No in-app purchases
Lumeo. Your second brain
- Glow$2.991 Month
Questions
Is Lumin free?
Is Lumeo. Your second brain free?
Do Lumin or Lumeo. Your second brain have ads?
Which is updated more often, Lumin or Lumeo. Your second brain?
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