# ThreeLinesDiary vs Annual Memo

The clearest difference is in-app purchases: ThreeLinesDiary at none against Annual Memo's 1. Annual Memo's advantage is update cadence (every 5 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Annual Memo sells 1 one-off in-app purchase. ThreeLinesDiary asks for nothing beyond the download.

ThreeLinesDiary ships an update every 6 months, Annual Memo every 5 weeks. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | ThreeLinesDiary | Annual Memo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 9 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seiji Nagano](https://appshunter.io/developer/689628441) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### ThreeLinesDiary

[App page](https://appshunter.io/ios/app/threelinesdiary/id1161808671)

A simple journaling app designed to improve sleep quality by encouraging users to write a three-line diary entry before bed. It allows for photo attachments and provides daily reminders to help build a consistent writing habit.

**Highlights:** Three-line daily journal entries, Attach photos to entries, Daily writing reminders, Improve sleep quality, Simple and intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Annual Memo

[App page](https://appshunter.io/ios/app/annual-memo/id1612023919)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Feature | $1.99 | one-time |


## Frequently asked questions

### Is ThreeLinesDiary free?

ThreeLinesDiary is free to download, with no in-app purchases.

### Is Annual Memo free?

Annual Memo is free to download, with in-app purchases available.

### Do ThreeLinesDiary or Annual Memo have ads?

Both ThreeLinesDiary and Annual Memo show ads.

### Which is updated more often, ThreeLinesDiary or Annual Memo?

ThreeLinesDiary ships an update every 6 months, and Annual Memo every 5 weeks. Most recently, ThreeLinesDiary was updated on October 10, 2026 and Annual Memo on October 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*