PORTSIDE FOS vs HOTs.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Aircraft Schedules
- Trip and Leg Details
- Crew Duty Times
- Flight Log Entry
- Expense Submission
- Offline Airport Directory
- Weather and NOTAMs
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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
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.
- Real-time hazard monitoring
- Interactive 3D globe visualization
- SIGMETs, PIREPs, AIREPs
- Turbulence reports
- High-level hazard overlays
- Pilot-focused interface
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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
Verdict
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
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.
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.
| Parameter | PORTSIDE FOS | HOTs. |
|---|---|---|
| Price | Free | Free |
| Rating | 1.2 (49 ratings) — better | — |
| Positive reviews | 2.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 49 — better | — |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 269 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Portside, Inc. | Lagary Systems, Inc |
Customer experience
PORTSIDE FOS
HOTs.
In-app purchases
PORTSIDE FOS
No in-app purchases
HOTs.
- HOTs Full Access3 Days trial$9.991 Year








