# TBM Performance vs 737 CSFF

The clearest difference is price: TBM Performance at Free against 737 CSFF's $2.99. TBM Performance also leads on ratings volume (14 vs 2). On rating, update cadence, ads and in-app purchases there is nothing between them.

TBM Performance is free to download; 737 CSFF costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for TBM Performance against 5.0 for 737 CSFF. That said, the two scores are not equally well evidenced: TBM Performance has 14 ratings behind it against 2, so its average is the more settled of the two.

TBM Performance ships an update every 2 months, 737 CSFF every 4 months. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TBM Performance | 737 CSFF |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (14 ratings)](https://appshunter.io/ios/app/tbm-performance/id641403446/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/737-csff/id1551516212/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Ad-supported** | Paid |
| Size | 23 MB | 11 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [POH Performance L.L.C.](https://appshunter.io/developer/641403529) | [Dan O'Leary](https://appshunter.io/developer/1177083778) |

## What reviewers say

### TBM Performance

[App page](https://appshunter.io/ios/app/tbm-performance/id641403446)

This app calculates essential flight performance data for Daher TBM aircraft, covering takeoff, landing, climb, cruise, and emergency procedures. It includes tools like a glide distance calculator, circuit breaker finder, and risk analysis.

**Highlights:** Flight performance calculations, Takeoff and landing data, Climb and cruise performance, Emergency procedures, Glide distance calculator, Circuit breaker finder, Risk analysis tool

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

**In-app purchases:** none


### 737 CSFF

[App page](https://appshunter.io/ios/app/737-csff/id1551516212)

A visual guide to understanding Cold Soaked Fuel Frost (CSFF) on 737 aircraft wings. It references airline handbooks and Boeing FCOM guidance for educational purposes.

**Highlights:** Visual representation of CSFF scenarios, Study guide for 737 wing frost, References North American Airline Flight Handbook, Includes Boeing FCOM guidance, Educational tool for pilots

**In-app purchases:** none


## Frequently asked questions

### Is TBM Performance free?

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

### Is 737 CSFF free?

737 CSFF costs $2.99, with no in-app purchases.

### Which has better reviews, TBM Performance or 737 CSFF?

TBM Performance and 737 CSFF are both rated 5.0 out of 5 on the App Store, from 14 and 2 ratings respectively.

### Do TBM Performance or 737 CSFF have ads?

Neither TBM Performance nor 737 CSFF shows ads.

### Which is updated more often, TBM Performance or 737 CSFF?

TBM Performance ships an update every 2 months, and 737 CSFF every 4 months. Most recently, TBM Performance was updated on October 6, 2026 and 737 CSFF 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.*