Comparison

PORTSIDE FOS vs HOTs.

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

HOTs.

This aviation tool provides pilots with critical operational data and real-time hazard monitoring. Visualize global weather and turbulence reports on an interactive 3D globe for enhanced situational awareness.

Highlights
  • Real-time hazard monitoring
  • Interactive 3D globe visualization
  • SIGMETs, PIREPs, AIREPs
  • Turbulence reports
  • High-level hazard overlays
  • Pilot-focused interface
Read full description

HOTs is an operational flight intelligence platform built for professional pilots. Originally designed as a winter operations holdover calculator, HOTs has evolved into a comprehensive aviation hazard and situational awareness tool — delivering critical operational data in a clean, pilot-focused interface. Monitor aviation hazards worldwide through an interactive 3D globe: • SIGMETs • PIREPs • AIREPs • Turbulence reports • High-level hazard overlays See threats at cruise levels, oceanic routes, and continental airspace in real time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lagary.com/one/privacy-policy.html

Screenshots

PORTSIDE FOS4 screens
HOTs.4 screens

Verdict

The call

The clearest difference is review sentiment: HOTs. at 100% against PORTSIDE FOS's 3%. HOTs. also leads on update cadence (every 5 days vs every 4 months). PORTSIDE FOS's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 18.6). On price, ads and device support 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. HOTs. sells 1 in-app purchase, starting at $9.99 per year. PORTSIDE FOS asks for nothing beyond the download.

UpkeepUpdate frequency

PORTSIDE FOS ships an update every 4 months, HOTs. every 5 days. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
PORTSIDE FOS versus HOTs.: the parameters behind the verdict, then further details
ParameterPORTSIDE FOSHOTs.
PriceFreeFree
Rating1.2 (49 ratings) — better—
Positive reviews2.9% of reviews100.0% of reviews — better
Number of ratings49 — better—
Update frequencyEvery 4 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size269 MB74 MB
Age rating4+4+
DeveloperPortside, Inc.Lagary Systems, Inc

Customer experience

PORTSIDE FOS

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

HOTs.

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PORTSIDE FOS

No in-app purchases

1 purchases

HOTs.

Subscriptions1
  • HOTs Full Access3 Days trial$9.991 Year

Questions

Is PORTSIDE FOS free?
PORTSIDE FOS is free to download, with no in-app purchases.
Is HOTs. free?
HOTs. is free to download, with in-app purchases available.
Do PORTSIDE FOS or HOTs. have ads?
Neither PORTSIDE FOS nor HOTs. shows ads.
Which is updated more often, PORTSIDE FOS or HOTs.?
PORTSIDE FOS ships an update every 4 months, and HOTs. every 5 days. Most recently, PORTSIDE FOS was updated on November 6, 2026 and HOTs. on November 4, 2026.

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