Simple Memo vs NotePost
Which Should You Choose?
NotePost offers AI-powered suggestions and also runs on Android and Mac. Simple Memo prioritizes getting you typing fast, with no account to create. Want AI? Choose NotePost. Want quick capture to your inbox? Choose Simple Memo. The right choice depends on your priorities.
What is NotePost?
NotePost (メモポスト) is a memo app developed by Masataka Shida that sends memos to your own email. Its standout feature is "NotePost AI," which analyzes your memos and suggests follow-up actions automatically. Besides iPhone it runs on Android, and its developer says it can be installed on a Mac from the App Store. It pursues a noise-less design philosophy. A free plan is available (20 emails and 5 NotePost AI uses a month), and it is known as a Captio alternative. However, account registration is required to use the service.
The Current State of Memo-Sending Apps
The "email a memo to yourself" category was pioneered by Captio, launched as an iOS app around 2010. Beloved for its simple concept and beautiful UI, Captio left the App Store years before its cloud service ended in October 2024. The category also includes apps like Email Me App, Note To Self Mail, Moca, and NotePost. As of 2026, Simple Memo - for Obsidian continues to ship regular updates. It has an Outbox offline queue, AES-GCM on-device encryption, and one-tap send via Cloudflare Workers. It is inspired by Captio's workflow and rebuilt with 2026 technology.
Comparison Table: Simple Memo vs NotePost
| Feature | Simple Memo | NotePost |
|---|---|---|
| Launch Speed (warm launch, iPhone 16e) | 0.4s (type immediately) | Not measured by us |
| One-Tap Send | Yes (direct email) | Yes |
| AI Features | On-device AI adds a title, tags and a type (with Obsidian set up and AI Auto-Tagging on) | NotePost AI |
| Devices | iPhone and Apple Watch | iPhone and Android (Mac via the App Store) |
| No Account Required | Use existing email | Account registration required |
| Offline Support | Outbox auto-resend | Not stated publicly |
| Encryption | AES-GCM (on-device) | Not stated publicly |
| Free Tier | 3 sends/day (Obsidian-only saving is Premium) | 20 emails and 5 AI suggestions a month |
| App languages | 10 (including Japanese and English) | Japanese |
4 Differences Between Memo-Sending Apps
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1
UI Design Direction
NotePost adds features such as AI action suggestions. Simple Memo's screen centers on an input field and a send button. If you want the simplest possible screen, choose Simple Memo; if you want AI suggestions, NotePost is the better fit. -
2
Accounts and destinations
NotePost is used with an account, and the number of emails you can send depends on the plan (20 a month on the free plan). Simple Memo needs no account: you set your own email address as the destination (a new address is verified again when you change it), and with the integration set up memos are also appended to a note in your Obsidian vault. -
3
How memos are relayed and stored
We could not confirm from NotePost's official site whether it stores memos on its servers (its AI suggestions are generated from the memo text). Simple Memo relays memos through Cloudflare Workers without persistently storing memo content on its own servers. -
4
Pricing Model
NotePost's free plan allows 20 emails and 5 AI suggestions a month; Pro (¥550/month, 100 emails, 50 AI uses) and Expert (¥880/month, 500 emails, 250 AI uses) cost more (official-site prices; in-app purchase is higher). Simple Memo offers 3 sends per day free (saving to Obsidian only is Premium). Premium ($2.99/month) unlocks unlimited sends.
Who Should Choose Which?
- Want quick capture (0.4s warm launch)
- Prefer no account registration
- Need on-device encryption for security
- Want memos written offline to send once you're back online
- Want AI tagging to stay on the device
- Want a free plan with 3 sends a day, with no time limit
- Want AI-powered action suggestions from memos
- Want to use it on Android or a Mac too
- Don't mind account registration
- Prefer noise-less design philosophy
FAQ
Can I get by without NotePost's AI features?
Simple Memo also has on-device AI: with Obsidian integration set up and AI Auto-Tagging turned on (off by default), it adds a title, tags and a type when you send (memos are not sent out for tagging). It does not suggest next actions from your memos, so if you want AI suggestions, NotePost fits better.
Does NotePost store memos on its servers?
We could not confirm this from NotePost's official site (it requires an account, and its AI suggestions are generated from the memo text). Simple Memo only relays through Cloudflare Workers without persistently storing memo content on its own servers.
How do NotePost and Simple Memo pricing compare?
Simple Memo offers 3 sends per day free (saving to Obsidian only is Premium). NotePost's free plan allows 20 emails and 5 AI suggestions a month, with paid Pro (¥550/month) and Expert (¥880/month) plans (official-site prices). Simple Memo Premium ($2.99/month) unlocks unlimited sends.
Can I keep using the same email address when switching from NotePost?
Yes. Set the same email address as your destination in Simple Memo, and memos from both apps will arrive in the same inbox. No data migration required.
What if I also need to send memos from desktop?
Its developer says NotePost can be installed on a Mac from the App Store. Simple Memo is for iPhone (and Apple Watch). On a computer, you can email yourself from your desktop email client.
Related Pages
References
- Memo Post official site (Japanese) — plans and pricing, Android support, account sign-up. Checked October 15, 2026.
- Developer's note post on the desktop version (Japanese) — December 31, 2024; records the Mac version.