# Crystal Byte vs AnniversaryHeartLog

The clearest difference is ads: Crystal Byte at none against AnniversaryHeartLog's shown. AnniversaryHeartLog's advantage is update cadence (every 3 days vs weekly) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

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

Crystal Byte ships an update weekly, AnniversaryHeartLog every 3 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Crystal Byte | AnniversaryHeartLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Size | 43 MB | 29 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ethan John Rodriguez](https://appshunter.io/developer/6790647326) | [KAIYOKAN, Y.K.](https://appshunter.io/developer/1855394612) |

## What reviewers say

### Crystal Byte

[App page](https://appshunter.io/ios/app/crystal-byte/id6790647324)

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

**In-app purchases:** none


### AnniversaryHeartLog

[App page](https://appshunter.io/ios/app/anniversaryheartlog/id6808509426)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crystal Byte free?

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

### Is AnniversaryHeartLog free?

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

### Do Crystal Byte or AnniversaryHeartLog have ads?

AnniversaryHeartLog shows ads; Crystal Byte does not.

### Which is updated more often, Crystal Byte or AnniversaryHeartLog?

Crystal Byte ships an update weekly, and AnniversaryHeartLog every 3 days. Most recently, Crystal Byte was updated on October 28, 2026 and AnniversaryHeartLog on October 29, 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.*