Comparison

PORTSIDE FOS vs Diagnostics Direct

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PORTSIDE FOS

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
Read full description

The new FOS Mobile App for iPhone and iPad brings all the essentials of scheduling and flight planning to your fingertips. A must have app for aviation professionals on the go. Works online and offline. FOS Mobile requires FOS companion desktop application (version 3.11.4 or later) and/or International Trip Support Services, provided by Rockwell Collins ARINCDirect Flight Services. Flight Operations System (FOS) on the go with access to: - Aircraft Schedules - Trip and Leg Details - Crew Duty times and Briefing - Flight log Entry - Expense Submission - Maintenance Item Visibility - Safety and Service Issues - Document Management - ARINCDirect Flight planning Integration - Flight Risk and Fatigue Integrations Tools Rockwell Collins International Trip Support including: - Trip Creation and Submission - Complete Trip Details - Access to Permits and Handling Information Included for the iPad is a Worldwide offline Airport Directory: - Lookup Airport information when offline in flight - Text weather (Metars, Tafs, Pireps, FD Winds, 7 day forecast) - Notams (all types) - Rockwell Collins Fuel Prices - Hotels (vendors/FBOS) - Local area information

About

Diagnostics Direct

This app provides aircraft technicians with a mobile solution for troubleshooting fault messages. It offers quick symptom searches and guided workflows to access top solutions, with a database updated based on field feedback.

Highlights
  • Fault isolation solution
  • Troubleshoot fault messages
  • Quick symptom search
  • Intuitive workflows
  • Dynamic database
  • Field experience feedback
Features
Read full description

The Diagnostics Direct app is a comprehensive fault isolation solution that helps Gulfstream aircraft technicians troubleshoot fault messages on the go. Quick symptom search and intuitive workflows give you easier access to top solutions. The dynamic database is continuously updated with field experience feedback to provide improved outcomes. For use with Gulfstream G550, GVII-G500/G600, G650/G650ER, GVIII-G700 aircraft.

Screenshots

PORTSIDE FOS4 screens
Diagnostics Direct3 screens

Verdict

The call

The clearest difference is update cadence: Diagnostics Direct at every 2 months against PORTSIDE FOS's every 4 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

PORTSIDE FOS ships an update every 4 months, Diagnostics Direct every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard1 real difference · 9 level
PORTSIDE FOS versus Diagnostics Direct: the parameters behind the verdict, then further details
ParameterPORTSIDE FOSDiagnostics Direct
PriceFreeFree
Rating1.2 (48 ratings) — better—
Positive reviews2.9% of reviews — better0.0% of reviews
Number of ratings48 — better—
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size269 MB60 MB
Age rating4+4+
DeveloperPortside, Inc.Veryon

Customer experience

PORTSIDE FOS

All ratings48 ratings
Positive4.2%
Neutral0.0%
Negative95.8%
Written reviews34 reviews
Positive2.9%
Neutral2.9%
Negative94.1%

Diagnostics Direct

Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

PORTSIDE FOS

No in-app purchases

None

Diagnostics Direct

No in-app purchases

Questions

Is PORTSIDE FOS free?
PORTSIDE FOS is free to download, with no in-app purchases.
Is Diagnostics Direct free?
Diagnostics Direct is free to download, with no in-app purchases.
Do PORTSIDE FOS or Diagnostics Direct have ads?
Neither PORTSIDE FOS nor Diagnostics Direct shows ads.
Which is updated more often, PORTSIDE FOS or Diagnostics Direct?
PORTSIDE FOS ships an update every 4 months, and Diagnostics Direct every 2 months. Most recently, PORTSIDE FOS was updated on November 2, 2026 and Diagnostics Direct on November 3, 2026.

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