# Shared Diary vs Pairlog

The clearest difference is in-app purchases: Pairlog at none against Shared Diary's 1. Pairlog also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Shared Diary sells 1 in-app purchase, starting at $2.99 per month. Pairlog asks for nothing beyond the download.

Shared Diary ships an update fortnightly, Pairlog weekly. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Shared Diary | Pairlog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Size | 41 MB | 32 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Originate Aster, Inc.](https://appshunter.io/developer/1722580451) | [RINTARO YAMADA](https://appshunter.io/developer/1887135590) |

## What reviewers say

### Shared Diary

[App page](https://appshunter.io/ios/app/shared-diary/id6741321954)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proプラン(1か月間) | $2.99 | per month |


### Pairlog

[App page](https://appshunter.io/ios/app/pairlogcouples-diary-and-promise/id6760982290)

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

**In-app purchases:** none


## Frequently asked questions

### Is Shared Diary free?

Shared Diary is free to download, with in-app purchases available.

### Is Pairlog free?

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

### Do Shared Diary or Pairlog have ads?

Shared Diary shows ads; Pairlog does not.

### Which is updated more often, Shared Diary or Pairlog?

Shared Diary ships an update fortnightly, and Pairlog weekly. Most recently, Shared Diary was updated on October 10, 2026 and Pairlog 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.*