# Echo vs One Line Diary

The clearest difference is price: Echo at Free against One Line Diary's $1.99. One Line Diary's advantage is iOS requirement (13.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Echo is free to download; One Line Diary costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Echo | One Line Diary |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 5 MB | 25 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MerchzDeals LLC](https://appshunter.io/developer/1805552315) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-relationship-notebook/id6760734578)

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

**In-app purchases:** none


### One Line Diary

[App page](https://appshunter.io/ios/app/one-line-diary-daily-mood/id6786556086)

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

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is One Line Diary free?

One Line Diary costs $1.99, with no in-app purchases.

### Do Echo or One Line Diary have ads?

Neither Echo nor One Line Diary shows ads.

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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.*