Comparison

EASA FTL Calculator vs SubStandard

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • Cold temperature corrections
  • Altitude set storage
  • Quick access to saved altitudes
  • Easy to use interface
Features
Read full description

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

EASA FTL Calculator4 screens
SubStandard4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
EASA FTL Calculator versus SubStandard: the parameters behind the verdict, then further details
ParameterEASA FTL CalculatorSubStandard
Price$1.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.112.0 — better
Further details — not scored
Size7 MB33 MB
Age rating4+4+
DeveloperWilliam BealiService Ottner Röck

Customer experience

EASA FTL Calculator

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SubStandard

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

EASA FTL Calculator

No in-app purchases

None

SubStandard

No in-app purchases

Questions

Is EASA FTL Calculator free?
EASA FTL Calculator costs $1.99, with no in-app purchases.
Is SubStandard free?
SubStandard is free to download, with no in-app purchases.
Do EASA FTL Calculator or SubStandard have ads?
Neither EASA FTL Calculator nor SubStandard shows ads.
Which is updated more often, EASA FTL Calculator or SubStandard?
EASA FTL Calculator ships an update every 2 months, and SubStandard every 7 months. Most recently, EASA FTL Calculator was updated on October 26, 2026 and SubStandard on October 31, 2026.

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