EASA FTL Calculator vs SubStandard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EASA FTL Calculator
This app provides commercial pilots with instant, accurate calculations for duty time and Flight Duty Period limits according to EU Regulation 83/2014. It supports various extension types and acclimatization states, ensuring compliance with EASA flight time limitations.
- Calculate maximum Flight Duty Period
- Determine latest on-blocks time
- Support for split duty and in-flight rest extensions
- Automatic acclimatization state factoring
- Browse and search ORO.FTL regulations
- iCloud settings sync across devices
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Stay legal, stay safe. EASA FTL Calculator gives commercial pilots instant access to accurate duty time and FDP limits under EU Regulation 83/2014 — no maths, no margin for error. Whether you're flying a simple single-sector turn-around or a complex duty with in-flight rest or split duty extensions, the app handles the calculation for you. DUTY TIME & FDP • Calculate your maximum Flight Duty Period for any number of sectors • Determine your latest on-blocks time for a given report time • Support for all extension types: split duty and in-flight rest with one, two, or three crew members • Automatic acclimatization state factored into every FDP calculation ACCLIMATIZATION • Enter your previous and next duty report times to determine your acclimatization state • Results show whether you are acclimatised to your previous duty timezone, next duty timezone, or in an unknown transition state • Seamlessly pass your acclimatization result directly into a Duty Time calculation REGULATORY REFERENCE • Browse the full text of ORO.FTL regulations, formatted for easy on-the-go reference • Search across all sections to find exactly what you need SETTINGS & SYNC • Set your default reporting timezone, extension type, and starting view • Settings sync automatically across all your devices via iCloud Designed by pilots, for pilots. Calculations follow the lookup tables in EU Regulation 83/2014 and ORO.FTL — the current, in-force EASA flight time limitation rules — giving you confidence that every result is regulation-compliant.
SubStandard
This aviation utility app simplifies applying cold temperature corrections for altitudes. It allows users to save frequently used altitude sets for rapid retrieval, enhancing efficiency in flight planning.
- Cold temperature corrections
- Altitude set storage
- Quick access to saved altitudes
- Easy to use interface
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SubStandard is an easy to use app to apply cold temperature corrections in aviation. Moreover, it lets you store sets of altitudes for quick access later on.
Screenshots
Verdict
The clearest difference is review sentiment: EASA FTL Calculator at 100% against SubStandard's 0%. EASA FTL Calculator also leads on update cadence (every 2 months vs every 7 months). SubStandard's advantage is price (Free vs $1.99) and iOS requirement (12.0 vs 26.1). On ads, in-app purchases 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
SubStandard is free to download; EASA FTL Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EASA FTL Calculator ships an update every 2 months, SubStandard every 7 months. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.
| Parameter | EASA FTL Calculator | SubStandard |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | William Beal | iService Ottner Röck |
Customer experience
EASA FTL Calculator
SubStandard
In-app purchases
EASA FTL Calculator
No in-app purchases
SubStandard
No in-app purchases
Questions
Is EASA FTL Calculator free?
Is SubStandard free?
Do EASA FTL Calculator or SubStandard have ads?
Which is updated more often, EASA FTL Calculator or SubStandard?
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