Standard Notes vs Lumo AI by Proton
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Standard Notes
Securely capture and sync your thoughts across all devices with end-to-end encryption. This app offers a simple, lasting place for all your notes, from personal thoughts to sensitive information, with robust privacy features.
- End-to-end encryption
- Cross-device syncing
- Offline access
- Passcode and biometric lock
- Tagging system
- Open-source code
- Optional productivity editors and themes
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Standard Notes is a private and secure end-to-end encrypted notes app. It allows you to write and sync your notes across all your devices, including your iPhone, iPad, Mac, and web browser. Private means your notes are end-to-end encrypted, so only you can read your notes. Even we can't read the contents of your notes. Simple means it does one job and does it well. Standard Notes is a safe and lasting place for your life's work. Our focus is making it easy to write notes wherever you are and syncing them with encryption to all your devices. Our users love us for: • Personal Notes • Tasks & Todos • Passwords & Keys • Code & Technical Procedures • Private Journal • Meeting Notes • Cross-platform Scratchpad • Books, Recipes, & Movies • Health & Fitness Log Standard Notes comes free with: • Seamless sync across all your devices, with easy to use applications on iPhone, iPad, Mac, web browsers, and other platforms. • Offline access, so you can access your downloaded notes even without a connection. • No limit on number of devices. • No limit on number of notes. • Passcode lock protection, along with Touch ID and Face ID protection. • A tagging system to organize your notes (like #work, #ideas, #passwords, #crypto). • The ability to pin, lock, protect, and move notes to trash, which allows you to recover deleted notes until the trash is emptied. Standard Notes is completely open-source, which means when we say your notes are encrypted with industry-leading XChaCha-20 encryption, and that only you can read your notes, you don't have to take our word for it. Our code is open to the world to audit. We made Standard Notes simple because longevity is important to us. We want to make sure we're here, protecting your notes, for the next hundred years. You shouldn't have to find a new notes app every year. To sustain our development, we offer optional paid subscriptions which give you access to powerful tools like: • Productivity editors (like Markdown, Code, Spreadsheets) • Beautiful themes (like Midnight, Focus, Solarized Dark) • Powerful cloud tools including daily backups of your encrypted data delivered to your email inbox every day, or backed up to your cloud provider (like Dropbox and Google Drive). We're always happy to talk, whether it be a question, thought, or issue. Please feel free to email us any time at help@standardnotes.com. When you take the time to send us a message, we'll be sure to do the same. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Lumo AI by Proton
This AI assistant prioritizes your privacy, offering help with productivity, curiosity, and staying informed. Developed by the team behind trusted encrypted services, it ensures your data remains secure.
- Privacy-first AI assistant
- Boost productivity
- Satisfy curiosity
- Stay informed
- Secure data handling
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Lumo is a zero-access encrypted AI assistant that keeps every conversation private. Your data is never logged, shared, or used to train models. Your chats are yours, and yours alone. Built by Proton, the privacy brand trusted by over 100 million people and the team behind Proton Mail, VPN, Drive, and Pass. THOUGHTFUL HELP FOR ANY TASK Lumo handles everything from quick questions to more complex work. Choose Fast for quick answers or Thinking for multi-step reasoning. FAST, POWERFUL WEB SEARCH Get precise, real-time answers in seconds. Lumo cites live sources so you can verify facts, dig deeper, and stay current on news, events, financial data, and more. CREATE AND REFINE IMAGES AND FILES Work with images and files just by telling Lumo what you need, from generating and editing images to analyzing documents. Connect your Proton Drive account for seamless access to stored files. AI THAT EVOLVES OVER TIME Lumo gets better every time you use it. Memory retains context and preferences across sessions, and you can set tones and styles to get the exact Lumo experience you want. STAY PRODUCTIVE AND ORGANIZED Projects give you dedicated encrypted spaces for tasks that span multiple chats, files, and instructions, while Custom Lumos let you create assistants tailored for specific tasks. Switch between light and dark modes for a more comfortable experience throughout the day. GHOST MODE For conversations where you want maximum privacy, choose Ghost Mode. Chats are instantly deleted once you close them for greater peace of mind. PRIVACY YOU CAN VERIFY Lumo is founded on zero-access encryption with no server-side chat logs, and never uses your data for profit or model training. Like all Proton products, Lumo is built and hosted in Europe and is fully open-source. Lumo helps you stay productive, curious, and informed — without ever compromising your privacy. Start a confidential chat for free today. For more information, visit our website: https://lumo.proton.me/about Terms of service: https://lumo.proton.me/legal/terms Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our open-source code base: https://github.com/ProtonLumo/ios-lumo
Screenshots
Verdict
The clearest difference is rating: Standard Notes at 4.7 against Lumo AI by Proton's 3.8. Standard Notes also leads on review sentiment (63% vs 46%) and ratings volume (3.7K vs 525). Lumo AI by Proton's advantage is chart position (#186 vs unranked). On price, update cadence, ads and in-app purchases 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. Standard Notes sells 1 in-app purchase, starting at $119.99 per year and Lumo AI by Proton sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.
Standard Notes holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Standard Notes has 3.7K ratings behind it against 525, so its average is the more settled of the two. Written reviews point the same way: 63% of Standard Notes's written reviews are positive against 46% of Lumo AI by Proton's.
Standard Notes ships an update every 2 weeks, Lumo AI by Proton every 11 days. Both last shipped on September 22, 2026.
| Parameter | Standard Notes | Lumo AI by Proton |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.7K ratings) — better | 3.8 (525 ratings) |
| Positive reviews | 63.4% of reviews — better | 45.6% of reviews |
| Number of ratings | 3.7K — better | 525 |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #186 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 92 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | Standard Notes Ltd. | Proton AG |
Customer experience
Standard Notes
Lumo AI by Proton
User reviews
Standard Notes
From 3.7K App Store ratingsWhat we love
- 🚀 Fast and reliable sync
- 🔒 Excellent privacy and security
- 👍 Simple and intuitive interface
- 📚 Great for organizing notes
- 💻 Cross-platform availability
Room to improve
- 🐛 Occasional bugs and crashes
- 🔑 Frustrating login/authentication issues
- 💰 Expensive premium subscription
- 📱 Limited features in free version
- 🖍️ Lack of formatting options
Lumo AI by Proton
From 525 App Store ratingsWhat we love
- 👍 Sophisticated knowledge base
- 🚀 Rapid evolution with quality
- 💡 Potential for vision-enabled model
Room to improve
- 🐛 Inability to answer basic questions
- 🔒 Privacy concerns with data processing
- 🐛 Inconsistent responses
- 🐛 Frequent sign-outs
- 🐛 Dark mode issues
Bugs and requests
Standard Notes
Reported bugs
4 issues- Notes disappearing or getting deleted unexpectedly
- Sync issues between devices
- Keyboard and UI bugs on mobile
- Compatibility problems with older iOS versions
Requested features
5 requests- Add support for images and attachments
- Implement a more robust search function
- Introduce a dark mode option
- Allow for better note organization (folders, nested tags)
- Add undo/redo functionality
Lumo AI by Proton
Reported bugs
2 issues- Slow sign-in page
- Lack of real-time data access
Requested features
5 requests- Dynamic Type support for adjustable font size
- Secure access to Proton Drive files
- Ghost mode to ensure no chat history is saved
- Intuitive history clearing option
- App mode
In-app purchases
Standard Notes
- Professional Plan7 Days trial$119.991 Year
Lumo AI by Proton
- Lumo Plus (1 month)$12.991 Month
- Lumo Plus (12 months)$119.991 Year
Questions
Is Standard Notes free?
Is Lumo AI by Proton free?
Which has better reviews, Standard Notes or Lumo AI by Proton?
Do Standard Notes or Lumo AI by Proton have ads?
Which is updated more often, Standard Notes or Lumo AI by Proton?
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