# IsatHub Voice vs SD Toolkit

The clearest difference is rating: SD Toolkit at 5.0 against IsatHub Voice's 1.0. IsatHub Voice's advantage is update cadence (every 4 months vs every 27 months) and iOS requirement (8.0 vs 14.0). On price, ratings volume, 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.

SD Toolkit holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

IsatHub Voice ships an update every 4 months, SD Toolkit every 27 months. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | IsatHub Voice | SD Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/isathub-voice/id895474692/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sd-toolkit/id1618642110/reviews)** |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 27 months |
| Monetization | Free | Free |
| Size | 136 MB | 45 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Inmarsat Global Limited](https://appshunter.io/developer/883350935) | [Satcom Direct](https://appshunter.io/developer/447415249) |

## What reviewers say

### IsatHub Voice

[App page](https://appshunter.io/ios/app/isathub-voice/id895474692)

This application allows your smart device to make calls and send/receive SMS messages using a satellite network, providing connectivity outside of traditional cellular coverage. It integrates with your device's native contact list and offers call recording and history features.

**Highlights:** Make calls and send SMS over satellite, Works with IsatHub terminal, Uses device's native contact list, Call recording, Call history, SMS support

**Features:** macOS Compatibility

**In-app purchases:** none


### SD Toolkit

[App page](https://appshunter.io/ios/app/sd-toolkit/id1618642110)

Troubleshoot aviation satcom terminals via serial connection. This tool helps diagnose and resolve issues with satellite communication equipment used in aircraft.

**Highlights:** Troubleshoot satcom terminals, Serial connection support, Aviation specific, Diagnose communication issues

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

**In-app purchases:** none


## Frequently asked questions

### Is IsatHub Voice free?

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

### Is SD Toolkit free?

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

### Which has better reviews, IsatHub Voice or SD Toolkit?

SD Toolkit is rated higher. IsatHub Voice averages 1.0 out of 5 from 1 ratings, while SD Toolkit averages 5.0 from 2 ratings.

### Do IsatHub Voice or SD Toolkit have ads?

Neither IsatHub Voice nor SD Toolkit shows ads.

### Which is updated more often, IsatHub Voice or SD Toolkit?

IsatHub Voice ships an update every 4 months, and SD Toolkit every 27 months. Most recently, IsatHub Voice was updated on October 11, 2026 and SD Toolkit on October 10, 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.*