# coolAltitude vs PESE

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.

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.

## The numbers

| Metric | coolAltitude | PESE |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/coolaltitude-pilot-tools/id641533221/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 91 MB |
| Requires iOS | 17.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [SilkIdea s.r.o.](https://appshunter.io/developer/413936304) | [pesetech](https://appshunter.io/developer/1493745023) |

## What reviewers say

### coolAltitude

[App page](https://appshunter.io/ios/app/coolaltitude-pilot-tools/id641533221)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| De & Anti-Icing Pro | $7.99 | per year |
| Save & Retrieve Approach Data | $7.99 | per year |


### PESE

[App page](https://appshunter.io/ios/app/pese-hcl/id1542336861)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is coolAltitude free?

coolAltitude costs $7.99, and also offers in-app purchases.

### Is PESE free?

PESE is free to download, with no in-app purchases.

### Do coolAltitude or PESE have ads?

Neither coolAltitude nor PESE shows ads.

### Which is updated more often, coolAltitude or PESE?

coolAltitude ships an update every 3 months, and PESE monthly. Most recently, coolAltitude was updated on November 7, 2026 and PESE on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*