coolAltitude vs QF PayVerify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
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.
- 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
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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
Verdict
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
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.
coolAltitude ships an update every 5 months, QF PayVerify weekly. The most recent releases landed on September 7, 2026 and September 24, 2026 respectively.
| Parameter | coolAltitude | QF PayVerify |
|---|---|---|
| Price | $7.99 | $0.99 — better |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | — |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 49 MB | 48 MB |
| Age rating | 17+ | 4+ |
| Developer | SilkIdea s.r.o. | Daniel Levin |
Customer experience
coolAltitude
QF PayVerify
In-app purchases
coolAltitude
- De & Anti-Icing Pro$7.991 Year
- Save & Retrieve Approach Data$7.991 Year
QF PayVerify
No in-app purchases









