# HOTCalculator vs EFB

The clearest difference is review sentiment: HOTCalculator at 87% against EFB's 35%. EFB's advantage is rating (5.0 vs 4.2) and in-app purchases (none vs 4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. HOTCalculator sells 4 in-app purchases, starting at $3.99 per year. EFB asks for nothing beyond the download.

EFB holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews complicate that: 87% of HOTCalculator's written reviews are positive against 35% of EFB's, so the app with the better star average is not the one people write more warmly about.

HOTCalculator ships an update every 6 months, EFB monthly. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HOTCalculator | EFB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/hotcalculator/id423099991/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/efb-pro/id436659915/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | **86.7% of reviews** | 35.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 7 MB | 7 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Johan Bergsee](https://appshunter.io/developer/423099994) | [CAVU Companies](https://appshunter.io/developer/436659918) |

## What reviewers say

### HOTCalculator

[App page](https://appshunter.io/ios/app/hotcalculator/id423099991)

Quickly calculate hold-over times for various de-icing and anti-icing fluids. This tool supports different fluid types, temperature units, and includes adjusted times for specific conditions, making it ideal for pilots.

**Highlights:** Calculate hold-over time for de-icing/anti-icing fluids, Support for Type I, II, III, and IV fluids, FAA or Transport Canada guidelines, Support for °C or °F, Adjusted times for flaps extended, In-flight mode usability, Holdover time expiration alarm

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All fluids, 1 year | $3.99 | per year |
| All fluids winter 2026-2027 | $4.99 | one-time |
| All fluids winter 2025-2026 | $4.99 | one-time |
| All fluids winter 2024-2025 | $4.99 | one-time |


### EFB

[App page](https://appshunter.io/ios/app/efb-pro/id436659915)

This app calculates critical aircraft performance data for takeoff and landing, offline. It includes runway and weather data, weight and balance calculations, and performance forecasting. Meets FAA, EASA, and JAR requirements.

**Highlights:** Offline aircraft performance calculations, International runway database, Real-time weather integration, Weight & Balance calculations, Performance forecasting, Supports turbine aircraft

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

**In-app purchases:** none


## Frequently asked questions

### Is HOTCalculator free?

HOTCalculator is free to download, with in-app purchases available.

### Is EFB free?

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

### Which has better reviews, HOTCalculator or EFB?

EFB is rated higher. HOTCalculator averages 4.2 out of 5 from 5 ratings, while EFB averages 5.0 from 2 ratings.

### Do HOTCalculator or EFB have ads?

Neither HOTCalculator nor EFB shows ads.

### Which is updated more often, HOTCalculator or EFB?

HOTCalculator ships an update every 6 months, and EFB monthly. Most recently, HOTCalculator was updated on October 18, 2026 and EFB on October 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.*