# OpenAirLog vs Units2Units

The clearest difference is update cadence: OpenAirLog at daily against Units2Units's every 6 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. OpenAirLog sells 6 one-off in-app purchases and Units2Units sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OpenAirLog ships an update daily, Units2Units every 6 days. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | OpenAirLog | Units2Units |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 days |
| Size | 83 MB | 44 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Markus Maucher](https://appshunter.io/developer/1883492281) | [GnitoApp.com](https://appshunter.io/developer/1804710946) |

## What reviewers say

### OpenAirLog

[App page](https://appshunter.io/ios/app/openairlog/id6760256695)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenAirLog mit 1 € unterstützen | $0.99 | one-time |
| OpenAirLog mit 2 € unterstützen | $1.99 | one-time |
| OpenAirLog mit 5 € unterstützen | $3.99 | one-time |
| OpenAirLog mit 10 € unterstützen | $8.99 | one-time |
| OpenAirLog mit 20 € unterstützen | $17.99 | one-time |
| OpenAirLog mit 50 € unterstützen | $44.99 | one-time |


### Units2Units

[App page](https://appshunter.io/ios/app/units2units/id6778024693)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is OpenAirLog free?

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

### Is Units2Units free?

Units2Units is free to download, with in-app purchases available.

### Do OpenAirLog or Units2Units have ads?

Neither OpenAirLog nor Units2Units shows ads.

### Which is updated more often, OpenAirLog or Units2Units?

OpenAirLog ships an update daily, and Units2Units every 6 days. Most recently, OpenAirLog was updated on October 12, 2026 and Units2Units on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*