# PORTSIDE FOS vs SD Toolkit

The clearest difference is rating: SD Toolkit at 5.0 against PORTSIDE FOS's 1.2. PORTSIDE FOS's advantage is update cadence (every 4 months vs every 27 months) and ratings volume (49 vs 2). On price, ads, in-app purchases and monetization model 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 1.2. That said, the two scores are not equally well evidenced: PORTSIDE FOS has 49 ratings behind it against 2, so its average is the more settled of the two.

PORTSIDE FOS ships an update every 4 months, SD Toolkit every 27 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PORTSIDE FOS | SD Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (49 ratings)](https://appshunter.io/ios/app/portside-fos/id1049458379/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sd-toolkit/id1618642110/reviews)** |
| Number of ratings | **49** | 2 |
| Positive reviews | 2.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 27 months |
| Monetization | Free | Free |
| Size | 269 MB | 45 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Portside, Inc.](https://appshunter.io/developer/1609132004) | [Satcom Direct](https://appshunter.io/developer/447415249) |

## What reviewers say

### PORTSIDE FOS

[App page](https://appshunter.io/ios/app/portside-fos/id1049458379)

This app provides aviation professionals with essential flight planning and scheduling tools on their mobile devices. Access aircraft schedules, crew duty times, flight logs, and trip details, with offline capabilities for use in flight. It integrates with desktop companion applications and international trip support services.

**Highlights:** Aircraft Schedules, Trip and Leg Details, Crew Duty Times, Flight Log Entry, Expense Submission, Offline Airport Directory, Weather and NOTAMs

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

**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 PORTSIDE FOS free?

PORTSIDE FOS 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, PORTSIDE FOS or SD Toolkit?

SD Toolkit is rated higher. PORTSIDE FOS averages 1.2 out of 5 from 49 ratings, while SD Toolkit averages 5.0 from 2 ratings.

### Do PORTSIDE FOS or SD Toolkit have ads?

Neither PORTSIDE FOS nor SD Toolkit shows ads.

### Which is updated more often, PORTSIDE FOS or SD Toolkit?

PORTSIDE FOS ships an update every 4 months, and SD Toolkit every 27 months. Most recently, PORTSIDE FOS was updated on November 6, 2026 and SD Toolkit on November 3, 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.*