# OneLine vs シンプル3行日記

The clearest difference is in-app purchases: シンプル3行日記 at none against OneLine's 1. シンプル3行日記 also leads on update cadence (every 3 days vs every 10 days). OneLine's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. OneLine sells 1 one-off in-app purchase. シンプル3行日記 asks for nothing beyond the download.

OneLine ships an update every 10 days, シンプル3行日記 every 3 days. The most recent releases landed on October 6, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | OneLine | シンプル3行日記 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 3 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Merz](https://appshunter.io/developer/1642543757) | [Searial, Inc.](https://appshunter.io/developer/1875914396) |

## What reviewers say

### OneLine

[App page](https://appshunter.io/ios/app/oneline-daily-diary/id6760251447)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


### シンプル3行日記

[App page](https://appshunter.io/ios/app/3/id6791351877)

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

**In-app purchases:** none


## Frequently asked questions

### Is OneLine free?

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

### Is シンプル3行日記 free?

シンプル3行日記 is free to download, with no in-app purchases.

### Do OneLine or シンプル3行日記 have ads?

シンプル3行日記 shows ads; OneLine does not.

### Which is updated more often, OneLine or シンプル3行日記?

OneLine ships an update every 10 days, and シンプル3行日記 every 3 days. Most recently, OneLine was updated on October 6, 2026 and シンプル3行日記 on October 20, 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.*