# Sleep time record charts vs ReadMemory

The clearest difference is ads: ReadMemory at none against Sleep time record charts's shown. ReadMemory also leads on iOS requirement (15.1 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sleep time record charts | ReadMemory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Size | 5 MB | 40 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [YUTAKA IZUMIYAMA](https://appshunter.io/developer/1657248429) | [Ryoya Anno](https://appshunter.io/developer/1863884808) |

## What reviewers say

### Sleep time record charts

[App page](https://appshunter.io/ios/app/sleep-time-record-charts/id6502098948)

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

**In-app purchases:** none


### ReadMemory

[App page](https://appshunter.io/ios/app/readmemory/id6756952288)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep time record charts free?

Sleep time record charts is free to download, with no in-app purchases.

### Is ReadMemory free?

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

### Do Sleep time record charts or ReadMemory have ads?

Sleep time record charts shows ads; ReadMemory does not.

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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.*