# Crystal Alarm vs ForestLink

The clearest difference is update cadence: ForestLink at weekly against Crystal Alarm's every 3 months. Crystal Alarm's advantage is iOS requirement (12.0 vs 15.1). On price, ads, 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.

Crystal Alarm ships an update every 3 months, ForestLink weekly. Both last shipped on September 17, 2026.

## The numbers

| Metric | Crystal Alarm | ForestLink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 48 MB | 77 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Crystal Alarm AB](https://appshunter.io/developer/936507952) | [Forestlink AB](https://appshunter.io/developer/1519742072) |

## What reviewers say

### Crystal Alarm

[App page](https://appshunter.io/ios/app/crystal-alarm/id942101185)

**In-app purchases:** none


### ForestLink

[App page](https://appshunter.io/ios/app/forestlink/id1519742070)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crystal Alarm free?

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

### Is ForestLink free?

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

### Do Crystal Alarm or ForestLink have ads?

Neither Crystal Alarm nor ForestLink shows ads.

### Which is updated more often, Crystal Alarm or ForestLink?

Crystal Alarm ships an update every 3 months, and ForestLink weekly. Most recently, Crystal Alarm was updated on September 17, 2026 and ForestLink on September 17, 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.*