# AirMultiChrono vs altimer

The clearest difference is in-app purchases: altimer at none against AirMultiChrono's 3. altimer also leads on update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AirMultiChrono sells 3 one-off in-app purchases. altimer asks for nothing beyond the download.

AirMultiChrono ships an update every 2 days, altimer daily. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | AirMultiChrono | altimer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 16 MB | 36 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Valerie Otero](https://appshunter.io/developer/1848585337) | [Masahiro Sone](https://appshunter.io/developer/6778677040) |

## What reviewers say

### AirMultiChrono

[App page](https://appshunter.io/ios/app/airmultichrono/id6754513036)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small coffee | $1.99 | one-time |
| Medium coffee | $3.99 | one-time |
| Large coffee | $5.99 | one-time |


### altimer

[App page](https://appshunter.io/ios/app/altimer/id6784337498)

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

**In-app purchases:** none


## Frequently asked questions

### Is AirMultiChrono free?

AirMultiChrono is free to download, with in-app purchases available.

### Is altimer free?

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

### Do AirMultiChrono or altimer have ads?

Neither AirMultiChrono nor altimer shows ads.

### Which is updated more often, AirMultiChrono or altimer?

AirMultiChrono ships an update every 2 days, and altimer daily. Most recently, AirMultiChrono was updated on October 5, 2026 and altimer on September 30, 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.*