# Right Angle vs Angle Todo

The clearest difference is iOS requirement: Angle Todo at 15.0 against Right Angle's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Right Angle sells 9 in-app purchases, starting at $2.99 per month and Angle Todo sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Right Angle ships an update every 5 days, Angle Todo every 4 days. The most recent releases landed on July 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Right Angle | Angle Todo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (30 ratings)](https://appshunter.io/ios/app/right-angle/id292390648/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 73.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 29 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Jerry Mayers](https://appshunter.io/developer/287638654) | [国龙 赵](https://appshunter.io/developer/1600931443) |

## What reviewers say

### Right Angle

[App page](https://appshunter.io/ios/app/right-angle/id292390648)

This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.

**Highlights:** Triangle solver, Circle segment calculator, Multiple angle units (degrees, radians, DMS, grade, x/12), Oblique triangle solver (add-on), Circle segment solver (add-on), Free right triangle calculator

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Renews Monthly | $2.99 | per month |
| Renews Yearly | $14.99 | per year |
| Small Tip | $2.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Segments Calculator | $5.99 | one-time |
| Oblique Triangle Calculator | $5.99 | one-time |
| Segment & Oblique Triangle | $6.99 | one-time |
| Large Tip | $9.99 | one-time |
| Huge Tip | $29.99 | one-time |


### Angle Todo

[App page](https://appshunter.io/ios/app/angle-todo/id1601760271)

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly VIP | $0.99 | per month |
| Monthly VIP For Family | $1.49 | per month |
| Yearly VIP | $10.99 | per year |
| Monthly VIP For Family | $16.99 | per year |


## Frequently asked questions

### Is Right Angle free?

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

### Is Angle Todo free?

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

### Do Right Angle or Angle Todo have ads?

Neither Right Angle nor Angle Todo shows ads.

### Which is updated more often, Right Angle or Angle Todo?

Right Angle ships an update every 5 days, and Angle Todo every 4 days. Most recently, Right Angle was updated on July 17, 2026 and Angle Todo on September 11, 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.*