SandMemo vs HeartNote Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SandMemo
This app helps you remember important details about people and events. Create individual cards for relationships or personal thoughts, with options for different types of memories and secure local storage. Features include customizable text styles and a widget for quick access.
- Card-based journaling
- Secure local data storage
- iCloud encrypted sync
- Customizable text styles
- Tagging and filtering
- Home screen widget
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App Store "weekly recommended App" SandMemo is a secure memo app that helps you memo intimate relationships if you always forget things about your parents, lovers or friends. You just need to create a separate card for them to start recording. Also, you can create a card for yourself to write down thoughts quickly. Open the App, click on the upper right corner of the card and start writing. In iOS17, we design a quick small widget for users to start writing directly from home screen~ SIMPLE DESIGN · Cute homepage, easy to get started · Original card shorthand, allowing you to start writing in a second PRIVATE AND SECURE · Two kinds of locks: card lock and single lock · All data is stored locally by default · Support iCloud encrypted sync (manually open) THREE KINDS OF SANDS · Using “Space Sand”, you can record basic information about intimate relationships, such as likes and dislikes · Using “Vivid Time Sand”, you can write down what happened recently · Using “Vague Time Sand”, you can write down memories over the years OTHER SPECIAL · Dual view - default card view, optional grid view for a large number of cards · Time and space swap - Time Sand and Space Sand can be converted · Editor with adjustable text styles · Tags can be grouped, and used to search and filter · Randomly pick a memory from your collection · Family sharing Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://memorysand.super.site/en/privacy
HeartNote Diary
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HeartNote is an offline-first private journaling app focused on privacy, security, and a calm writing experience. Your entries, photos, audio, video, files, and doodles are stored locally on your device by default. No account is required, and your data is not forced into the cloud. HeartNote helps you capture everyday life in richer ways. In addition to plain text, you can write with images, image groups, video, audio, files, and doodles. The editor supports mixed media layouts, flexible block reordering, and Markdown text, so writing feels natural and expressive. HeartNote also helps you organize and revisit your memories with: Timeline and calendar views Notebooks, tags, weather, and mood metadata Search and filters Media library for browsing attachments On This Day, trends, and review insights Time Capsule reminders for future reflection For privacy and protection, HeartNote supports app lock, PIN, biometric unlock, and local backup and restore, so your journal stays under your control. This version also adds: Multi-year diary Notebook-based journal export Direct journal creation from a selected calendar date Export a single entry as a shareable journal card If you want a journaling app that stays private, works offline, and supports rich content, HeartNote is built for long-term personal use.
Screenshots
Verdict
The clearest difference is in-app purchases: HeartNote Diary at none against SandMemo's 5. HeartNote Diary also leads on iOS requirement (13.0 vs 15.0). SandMemo's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support 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. SandMemo sells 5 in-app purchases, starting at $0.99 per month. HeartNote Diary asks for nothing beyond the download.
SandMemo ships an update every 5 days, HeartNote Diary every 3 weeks. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.
| Parameter | SandMemo | HeartNote Diary |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | 广平 叶 | 俐 王 |
In-app purchases
SandMemo
- 1 month$0.991 Month
- 1 month7 Days trial$0.991 Month
- 1 year$7.991 Year
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- 1 year1 Month trial$7.991 Year
- lifetime$17.99
HeartNote Diary
No in-app purchases









