# MySondy GO vs ISA SIGMA ISONTINA

The clearest difference is iOS requirement: ISA SIGMA ISONTINA at 11.0 against MySondy GO's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MySondy GO ships an update monthly, ISA SIGMA ISONTINA every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MySondy GO | ISA SIGMA ISONTINA |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 12 MB | 24 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [MIRKO DALMONTE](https://appshunter.io/developer/1809497083) | [ID&A S.r.l.](https://appshunter.io/developer/1446283055) |

## 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


### ISA SIGMA ISONTINA

[App page](https://appshunter.io/ios/app/isa-sigma-isontina/id6769811344)

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

**In-app purchases:** none


## Frequently asked questions

### Is MySondy GO free?

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

### Is ISA SIGMA ISONTINA free?

ISA SIGMA ISONTINA is free to download, with no in-app purchases.

### Do MySondy GO or ISA SIGMA ISONTINA have ads?

Neither MySondy GO nor ISA SIGMA ISONTINA shows ads.

### Which is updated more often, MySondy GO or ISA SIGMA ISONTINA?

MySondy GO ships an update monthly, and ISA SIGMA ISONTINA every 3 weeks. Most recently, MySondy GO was updated on October 30, 2026 and ISA SIGMA ISONTINA on October 31, 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.*