# Aspen Wolf vs CalderSafe

The clearest difference is update cadence: CalderSafe at every 3 months against Aspen Wolf's every 22 months. CalderSafe also leads on iOS requirement (13.0 vs 15.6). 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.

Aspen Wolf ships an update every 22 months, CalderSafe every 3 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Aspen Wolf | CalderSafe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Size | 60 MB | 25 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Aspen Wolf Ltd](https://appshunter.io/developer/1644671345) | [Caldervale Technology Ltd](https://appshunter.io/developer/1799178979) |

## What reviewers say

### Aspen Wolf

[App page](https://appshunter.io/ios/app/aspen-wolf/id1644671343)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalderSafe

[App page](https://appshunter.io/ios/app/caldersafe/id6742651468)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aspen Wolf free?

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

### Is CalderSafe free?

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

### Do Aspen Wolf or CalderSafe have ads?

Neither Aspen Wolf nor CalderSafe shows ads.

### Which is updated more often, Aspen Wolf or CalderSafe?

Aspen Wolf ships an update every 22 months, and CalderSafe every 3 months. Most recently, Aspen Wolf was updated on October 27, 2026 and CalderSafe on October 28, 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.*