# SF50 TOLD vs E6B Slide Rule

The clearest difference is price: SF50 TOLD at Free against E6B Slide Rule's $2.99. E6B Slide Rule's advantage is chart position (#67 vs unranked) and iOS requirement (17.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

SF50 TOLD is free to download; E6B Slide Rule costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | SF50 TOLD | E6B Slide Rule |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sf50-told/id1552835232/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Best chart rank | — | **#67** |
| Size | 26 MB | 2 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Timothy Morgan](https://appshunter.io/developer/788467418) | [Western Chancellor LLC](https://appshunter.io/developer/6810377018) |

## What reviewers say

### SF50 TOLD

[App page](https://appshunter.io/ios/app/sf50-told/id1552835232)

This app assists Cirrus SF50 Vision pilots with performance calculations for takeoff and landing. It provides runway requirements based on entered weights, supporting various weather conditions and custom safety factors.

**Highlights:** Performance calculations for takeoff and landing, Input for weights and runway requirements, Automatic and manual weather entry, Custom safety factors, Support for non-normal configurations, Runway contamination data

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

**In-app purchases:** none


### E6B Slide Rule

[App page](https://appshunter.io/ios/app/e6b-slide-rule/id6810376836)

**Currently charting:** #67 Top Paid · Utilities (US App Store)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SF50 TOLD free?

SF50 TOLD is free to download, with no in-app purchases.

### Is E6B Slide Rule free?

E6B Slide Rule costs $2.99, with no in-app purchases.

### Do SF50 TOLD or E6B Slide Rule have ads?

Neither SF50 TOLD nor E6B Slide Rule shows ads.

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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.*