# MySondy GO vs Compass App

The clearest difference is in-app purchases: MySondy GO at none against Compass App's 3. MySondy GO also leads on update cadence (monthly vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Compass App sells 3 in-app purchases, starting at $4.99 per 7 days. MySondy GO asks for nothing beyond the download.

MySondy GO ships an update monthly, Compass App every 10 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | MySondy GO | Compass App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/mysondy-go/id6744840307/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 10 months |
| Monetization | Free | — |
| Size | 12 MB | 20 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MIRKO DALMONTE](https://appshunter.io/developer/1809497083) | [Appsy Digital](https://appshunter.io/developer/1772913485) |

## What reviewers say

### MySondy GO

[App page](https://appshunter.io/ios/app/mysondy-go/id6744840307)

This app aids in radio sonde field research by connecting to a TTGO Lora 32 device via Bluetooth. It displays the probe's position, smartphone location, and received data on a map. It also offers standalone and companion functionality for Apple Watch.

**Highlights:** Bluetooth connectivity to TTGO Lora 32, Real-time map display of probe and smartphone positions, Displays received radio sonde data, Standalone Apple Watch app, Companion Apple Watch app

**Features:** macOS Compatibility

**In-app purchases:** none


### Compass App

[App page](https://appshunter.io/ios/app/compass-app-mynorth/id6756671770)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per 7 days |
| Premium | $12.99 | per year |
| Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is MySondy GO free?

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

### Is Compass App free?

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

### Do MySondy GO or Compass App have ads?

Neither MySondy GO nor Compass App shows ads.

### Which is updated more often, MySondy GO or Compass App?

MySondy GO ships an update monthly, and Compass App every 10 months. Most recently, MySondy GO was updated on October 30, 2026 and Compass App on October 25, 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.*