# Triangle Angles Calculator vs Flight Shift

The clearest difference is update cadence: Triangle Angles Calculator at every 3 days against Flight Shift's every 3 weeks. Triangle Angles Calculator also leads on iOS requirement (12.0 vs 14.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Triangle Angles Calculator ships an update every 3 days, Flight Shift every 3 weeks. The most recent releases landed on September 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Triangle Angles Calculator | Flight Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/triangle-angles-calculator/id1598378708/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 28 MB | 6 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Trofimov](https://appshunter.io/developer/1598378710) | [Victor Ermilov](https://appshunter.io/developer/1678720263) |

## What reviewers say

### Triangle Angles Calculator

[App page](https://appshunter.io/ios/app/triangle-angles-calculator/id1598378708)

Easily calculate unknown sides, angles, and other parameters for various triangle types. Features interactive visualizations and works offline, making it ideal for students and professionals needing quick, accurate geometric solutions.

**Highlights:** Calculate unknown triangle parameters from 2-3 known values, Interactive visualization of triangle types, Real-time calculations with intuitive interface, Offline functionality, Supports metric and imperial units, Calculates sides, angles, area, perimeter, medians, and circles

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

**In-app purchases:** none


### Flight Shift

[App page](https://appshunter.io/ios/app/flight-shift/id6741475006)

This app automates the calculation of flight crew duty and rest times, adhering to Russian Ministry of Transport regulations. It accounts for various factors like flight class, unexpected events, and post-flight duties to ensure compliance and optimize crew schedules.

**Highlights:** Automated duty and rest time calculation, Accounts for various flight conditions, Visual time scale, Offline functionality, Splits flight shifts, Calculates minimum rest periods, Determines engine start deadlines

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Angles Calculator free?

Triangle Angles Calculator is free to download, with no in-app purchases.

### Is Flight Shift free?

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

### Do Triangle Angles Calculator or Flight Shift have ads?

Neither Triangle Angles Calculator nor Flight Shift shows ads.

### Which is updated more often, Triangle Angles Calculator or Flight Shift?

Triangle Angles Calculator ships an update every 3 days, and Flight Shift every 3 weeks. Most recently, Triangle Angles Calculator was updated on September 26, 2026 and Flight Shift on October 7, 2026.

---

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