# TwoTenDegrees vs NummiScan

The clearest difference is in-app purchases: TwoTenDegrees at none against NummiScan's 3. NummiScan's advantage is update cadence (every 4 days vs every 9 days) and iOS requirement (14.0.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. NummiScan sells 3 in-app purchases, starting at $11.99 per 7 days. TwoTenDegrees asks for nothing beyond the download.

TwoTenDegrees ships an update every 9 days, NummiScan every 4 days. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | TwoTenDegrees | NummiScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/twotendegrees/id6504466524/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free | — |
| Size | 1 MB | 44 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Scott Sloan](https://appshunter.io/developer/1752409905) | [Sakir Potcu](https://appshunter.io/developer/1863081349) |

## What reviewers say

### TwoTenDegrees

[App page](https://appshunter.io/ios/app/twotendegrees/id6504466524)

This utility calculates the impossible turn, a critical maneuver for pilots in case of engine failure. It provides precise calculations to help pilots determine the safest return to the runway.

**Highlights:** Impossible turn calculation, Engine failure scenario, Runway return planning, Pilot utility tool

**In-app purchases:** none


### NummiScan

[App page](https://appshunter.io/ios/app/nummiscan/id6756816592)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NummiScan Caesar - Weekly | $11.99 | per 7 days |
| NummiScan Caesar - Monthly | $24.99 | per month |
| NummiScan Caesar - Yearly | $249.99 | per year |


## Frequently asked questions

### Is TwoTenDegrees free?

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

### Is NummiScan free?

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

### Do TwoTenDegrees or NummiScan have ads?

Neither TwoTenDegrees nor NummiScan shows ads.

### Which is updated more often, TwoTenDegrees or NummiScan?

TwoTenDegrees ships an update every 9 days, and NummiScan every 4 days. Most recently, TwoTenDegrees was updated on October 13, 2026 and NummiScan on October 12, 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.*