# SD Toolkit vs MySky Scheduler CrewApp

The clearest difference is update cadence: MySky Scheduler CrewApp at every 6 weeks against SD Toolkit's every 27 months. On price, ads, in-app purchases and device support 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 ships an update every 27 months, MySky Scheduler CrewApp every 6 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | SD Toolkit | MySky Scheduler CrewApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sd-toolkit/id1618642110/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 45 MB | 84 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Satcom Direct](https://appshunter.io/developer/447415249) | [MySky](https://appshunter.io/developer/1535648567) |

## What reviewers say

### 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


### MySky Scheduler CrewApp

[App page](https://appshunter.io/ios/app/mysky-scheduler-crewapp/id6504997038)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SD Toolkit free?

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

### Is MySky Scheduler CrewApp free?

MySky Scheduler CrewApp is free to download, with no in-app purchases.

### Do SD Toolkit or MySky Scheduler CrewApp have ads?

Neither SD Toolkit nor MySky Scheduler CrewApp shows ads.

### Which is updated more often, SD Toolkit or MySky Scheduler CrewApp?

SD Toolkit ships an update every 27 months, and MySky Scheduler CrewApp every 6 weeks. Most recently, SD Toolkit was updated on November 3, 2026 and MySky Scheduler CrewApp on October 27, 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.*