Comparison

Holdover Time vs Simple FTL Calculator

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

Head to head
About

Holdover Time

Calculate essential deicing holdover times with the latest FAA guidelines for the 2025-2026 winter season. This tool provides accurate calculations for various fluid types and includes a real-time countdown timer for enhanced situational awareness.

Highlights
  • Up-to-date FAA Holdover Time Guidelines (2025-2026)
  • Calculations for Fluid Types II, III, & IV
  • Customized notes for specific fluids
  • Intuitive interface for aviation professionals
  • Real-time Holdover Time Countdown Timer
  • Ad-free experience
Features
Read full description

Holdover Time Calculator – FAA Winter 2025-2026 Stay prepared this winter with the latest FAA Holdover Time Guidelines for the 2025-2026 season. Our app makes it easy to calculate Holdover Times (HOT) and Allowance Times in just a few steps. Key Features: Up-to-Date FAA Tables: Includes the official FAA Holdover Time Guidelines for Winter 2025-2026. Fluid Types II, III & IV: Unlock full HOT tables with detailed fluid performance data. Customized Notes: Get tailored guidance and notes for the specific fluids and tables you are using. Simple & Reliable: Quickly calculate HOT with an intuitive interface designed for aviation professionals. Always Current: Updated regularly to reflect the most recent FAA revisions. Ad-Free Experience: No distractions, just the tools you need. New Feature: Added a Holdover Time Countdown Timer — visually track your deicing holdover period in real time, with color indicators and pause/resume controls for improved situational awareness. Perfect For: Pilots, dispatchers, ground crews, and aviation professionals who rely on accurate de/anti-icing guidance for safe operations. Take the guesswork out of winter operations. Download now and access the latest FAA HOT tables for 2025-2026 — with continuous updates as new data becomes available. Terms of Use (EULA): https://www.skyhightex.com/hot-privace-policy-eula/

About

Simple FTL Calculator

Features
Read full description

Stay compliant and fly safely with Simple FTL Calculator, the essential flight duty period (FDP) and target off-block time planning tool for pilots, flight attendants, and aviation operations personnel. Tired of complex FTL calculations? Simple FTL Calculator streamlines the process, helping you quickly determine maximum allowable duty times, manage split duty, and plan your departures to ensure you're always within regulatory limits. Designed by aviation professionals for aviation professionals, our app offers an intuitive, user-friendly interface for IOS. Key Features You'll Love: 1- Accurate FDP Calculations: Instantly find your maximum FDP based on report time and number of sectors. Our app uses standard time bands and allows for easy adjustments. 2- Smart Split Duty Support: Effortlessly calculate duty extensions for qualifying rest periods. The app automatically checks minimum break requirements and applies the correct extension (up to 50% of break time). 3- Target Off-Block Time Precision: Work backward from your FDP end time to determine the latest possible off-block time, factoring in flight duration and customizable post-flight duty buffers. 4- Seamless Integration: Use FDP results directly in the Target Off Block calculator or input times manually. Clear visual cues show data sources. 5- Fully Customizable: Tailor the app to your needs! Adjust pre-flight (before off-blocks) and post-flight (after on-blocks) duty timings. Edit the entire FDP reference table to match your airline’s specific opspecs, regional rules, or special approvals. 6- User-Friendly Experience: Dynamic alerts for recalculations ensure you always have the latest figures. Light/dark mode adapts to your device settings. Easily reset to default settings if needed. Offline functionality – no internet required. Who is this app for? Pilots & Flight Crew: Plan daily duties, assess impacts of delays, optimize split duty, and calculate return-to-base timings. Flight Operations Teams: Verify schedules, manage disruptions, and make informed crewing decisions. Aviation Training: A great tool for demonstrating FDP calculations and testing operational scenarios. Download Simple FTL Calculator today and take the guesswork out of flight duty limitations. Fly smarter, not harder! Feel free to contact us on support@simpleftl.com to add missing features or suggest improvements.

Screenshots

Holdover Time2 screens
Simple FTL Calculator4 screens

Verdict

The call

The clearest difference is price: Holdover Time at Free against Simple FTL Calculator's $3.99. Holdover Time also leads on update cadence (every 2 weeks vs every 2 months). Simple FTL Calculator's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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

Holdover Time is free to download; Simple FTL Calculator costs $3.99 up front. Holdover Time sells 3 in-app purchases, starting at $4.99 per year. Simple FTL Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Holdover Time ships an update every 2 weeks, Simple FTL Calculator every 2 months. The most recent releases landed on September 27, 2026 and September 11, 2026 respectively.

Scorecard3 real differences · 7 level
Holdover Time versus Simple FTL Calculator: the parameters behind the verdict, then further details
ParameterHoldover TimeSimple FTL Calculator
PriceFree — better$3.99
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size2 MB33 MB
Age rating4+4+
DeveloperMohamed FarhadiYiu Leung Sze

In-app purchases

3 purchases

Holdover Time

Subscriptions1
  • Hold Over Time Calculator$4.991 Year
One-time2
  • Hold Over Time CalculatorFree
  • Holdover Time - Life Time$24.99
None

Simple FTL Calculator

No in-app purchases

Questions

Is Holdover Time free?
Holdover Time is free to download, with in-app purchases available.
Is Simple FTL Calculator free?
Simple FTL Calculator costs $3.99, with no in-app purchases.
Do Holdover Time or Simple FTL Calculator have ads?
Neither Holdover Time nor Simple FTL Calculator shows ads.
Which is updated more often, Holdover Time or Simple FTL Calculator?
Holdover Time ships an update every 2 weeks, and Simple FTL Calculator every 2 months. Most recently, Holdover Time was updated on September 27, 2026 and Simple FTL Calculator on September 11, 2026.

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