Comparison

coolAltitude vs QF PayVerify

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

Head to head
About

coolAltitude

This professional tool assists IFR pilots in cold weather with temperature corrections for instrument approaches. It integrates weather, runway, and de-/anti-icing data into a clear workflow to reduce workload and enhance situational awareness during flight preparation.

Highlights
  • Temperature-corrected altitude calculations for various approaches
  • Integrated weather and runway condition data
  • De-/anti-icing support with holdover time timers
  • SNOWTAM decoding and braking action information
  • Save and share approach presets and operational data
Features
Read full description

coolAltitude is a professional aviation tool and calculator for IFR pilots operating in cold-weather conditions. It assists with temperature corrections during instrument approaches and integrates weather, runway and de-/anti-icing data into a single, clear workflow. Designed to reduce workload and improve situational awareness during flight preparation, coolAltitude focuses on accuracy, clarity and operational usability. Some advanced features require a paid subscription. -------------------------------- What coolAltitude does • Calculates temperature-corrected altitudes for ILS (CAT I), RNAV/GNSS, VOR and NDB approaches • Requires minimal data entry, using consistent color coding for immediate interpretation • Displays corrected altitudes along the entire approach profile at relevant DME distances • Supports flight path angle (FPA) calculations for FPA-enabled aircraft • Provides vertical speed reference tables (corrected and uncorrected) for various ground speeds • Includes QNH to QFE conversion tables with temperature corrections -------------------------------- Integrated weather and runway information • Live METAR interaction with automatic propagation of relevant values, including temperature (requires subscription) • SNOWTAM decoding with braking action information • RCAM (Runway Condition Assessment Matrix) based on ICAO GRF • Support for DME shift, including threshold, touchdown zone and displaced DME references -------------------------------- De-/Anti-icing support (requires subscription) • FAA Holdover Time (HOT) Guidelines for multiple fluid types and manufacturers • Integrated HOT countdown timer to track minimum and maximum recommended holdover times • Reference tables supporting assessment of snowfall intensity • Structured storage and sharing of airport-specific de-/anti-icing procedures -------------------------------- Saved and shared data (requires subscription) • Save and reload approach presets for individual airports and procedures • Share verified, structured operational data with other users • Local override of shared data when required -------------------------------- Built for professional use coolAltitude is built by pilots, for pilots. It is designed to support decision-making during high-workload phases without replacing approved procedures. -------------------------------- Important notice coolAltitude is an advisory tool only. It is not certified for operational use and does not replace approved documentation. Use in flight operations requires approval and operation as part of the operator’s Electronic Flight Bag (EFB) in accordance with applicable regulations. -------------------------------- coolAltitude does not replace your procedures. It helps you apply them correctly, even on the coldest days. -------------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

QF PayVerify

This app helps QF pilots verify their pay based on uploaded rosters. It calculates expected earnings for various pilot roles, duty types, and additional credits, aiding in financial budgeting. Easily share roster text files for quick analysis.

Highlights
  • Pay verification from uploaded rosters
  • Calculations for various pilot roles
  • Includes domestic and international DTA
  • Supports passive credits and overtime
  • Superannuation calculations
  • Easy roster text file sharing
Features
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QF Payslip Verify allows QF pilots to easily check their pay was what was expected based on their uploaded roster. Want to know how much pay you can expect for a new roster? Upload and easily find out. Includes calculations for: - SH Line Captains and First Officers - SH Check and Training pilots - Domestic and International DTA - Passive credits - Reserve callouts - Annual leave top up credit - Overtime payments - Super calculations at custom percentages And more... Know how much you can expect to be paid and when you can expect to be paid for that roster allows you to budget your finances easier. Easy way to share roster text files with the app: - Long press on the txt file (Note for Outlook users, see below) - Tap share - If the app is there, select it. Otherwise swipe to the end of the and tap more (the one with 3 dots) - Tap edit (top right) - Find the app in the list and select it (green + sign) to add the app to your favourites list Then the app should show up in the list when you try and share it again. Currently works for SH EBA9 only Coming soon: Support for QF Long haul ** NOTE for users using Microsoft Outlook Email mobile app ** There is a known issue with trying to export text files from the Outlook app. The security policy in place means that files cannot be saved to a mobile device or moved to other apps that are not Microsoft. The files are encrypted and will not work under any circumstances. Options are: - Use Microsoft Desktop application or Web application version - Use another email client like Apple Mail

Screenshots

coolAltitude4 screens
QF PayVerify3 screens

Verdict

The call

The clearest difference is in-app purchases: QF PayVerify at none against coolAltitude's 2. QF PayVerify also leads on price ($0.99 vs $7.99) and update cadence (weekly vs every 5 months). 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

coolAltitude costs $7.99 and QF PayVerify $0.99 up front. coolAltitude sells 2 in-app purchases, starting at $7.99 per year. QF PayVerify asks for nothing beyond the download.

UpkeepUpdate frequency

coolAltitude ships an update every 5 months, QF PayVerify weekly. The most recent releases landed on September 7, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
coolAltitude versus QF PayVerify: the parameters behind the verdict, then further details
ParametercoolAltitudeQF PayVerify
Price$7.99$0.99 — better
Rating5.0 (7 ratings) — better—
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings7 — better—
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size49 MB48 MB
Age rating17+4+
DeveloperSilkIdea s.r.o.Daniel Levin

Customer experience

coolAltitude

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

QF PayVerify

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

coolAltitude

Subscriptions2
  • De & Anti-Icing Pro$7.991 Year
  • Save & Retrieve Approach Data$7.991 Year
None

QF PayVerify

No in-app purchases

Questions

Is coolAltitude free?
coolAltitude costs $7.99, and also offers in-app purchases.
Is QF PayVerify free?
QF PayVerify costs $0.99, with no in-app purchases.
Do coolAltitude or QF PayVerify have ads?
Neither coolAltitude nor QF PayVerify shows ads.
Which is updated more often, coolAltitude or QF PayVerify?
coolAltitude ships an update every 5 months, and QF PayVerify weekly. Most recently, coolAltitude was updated on September 7, 2026 and QF PayVerify on September 24, 2026.

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