coolAltitude vs PESE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
coolAltitude
This app provides pilots with essential tools for cold-temperature altitude corrections, approach profiles, and de-icing calculations. It integrates weather data and offers a clear interface for critical flight planning information.
- Cold-temperature altitude corrections
- Approach profile visualization
- De-icing and holdover time calculations
- FMS-style approach setup
- METAR, TAF, and runway condition integration
- Light and dark mode support
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coolAltitude brings cold-temperature altitude corrections, approach profiles and de-icing tools into one focused workspace for pilots. ALTITUDE CORRECTIONS Enter the temperature and approach data, compare entered and corrected altitudes, and see the result in a clear approach profile. Select the correction method and rounding option for your workflow. DME shift helps put distance references in context. APPROACH SETUP Use the FMS-style interface to work with airport, runway and approach data. A structured display and dedicated keys keep the setup readable alongside the profile. DE-ICING AND HOLDOVER TIME Select the applicable conditions, fluid type and concentration. Review the available holdover guidance and keep the countdown visible during your workflow. WEATHER AND RUNWAY CONTEXT Consult METAR, TAF and runway-condition information alongside your calculations. Online information depends on the availability of the connected services. READABLE IN LIGHT AND DARK Clear colour roles distinguish inputs, corrected values and shifted values. Light and Dark appearances support different lighting conditions, with restrained surfaces and readable controls. Some features require an in-app subscription. Check the in-app purchase screen for the features included, subscription terms and current pricing. Use current operational information and the procedures applicable to your aircraft and operation when assessing results. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PESE
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Daylight stimulates us and affects our mood and activity levels. When we spend time indoors, the properties of artificial light become important. Using the right light at the right time, human-centric lighting creates a living environment that simulates changes in natural daylight and its visual, biological and emotional effects.
Screenshots
Verdict
The clearest difference is price: PESE at Free against coolAltitude's $7.99. PESE also leads on in-app purchases (none vs 2) and update cadence (monthly vs every 3 months). On ads 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
PESE is free to download; coolAltitude costs $7.99 up front. coolAltitude sells 2 in-app purchases, starting at $7.99 per year. PESE asks for nothing beyond the download.
coolAltitude ships an update every 3 months, PESE monthly. Both last shipped on November 7, 2026.
| Parameter | coolAltitude | PESE |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 91 MB |
| Age rating | 17+ | 4+ |
| Developer | SilkIdea s.r.o. | pesetech |
In-app purchases
coolAltitude
- De & Anti-Icing Pro$7.991 Year
- Save & Retrieve Approach Data$7.991 Year
PESE
No in-app purchases









