# Right Angle vs Foundation Footing Calculator

The clearest difference is review sentiment: Right Angle at 73% against Foundation Footing Calculator's 0%. Right Angle also leads on update cadence (every 6 days vs every 2 months) and rating (3.9 vs 3.6). Foundation Footing Calculator's advantage is iOS requirement (16.2 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Right Angle sells 9 in-app purchases, starting at $2.99 per month and Foundation Footing Calculator sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Right Angle holds the better App Store score, 3.9 against 3.6. Both are backed by a comparable volume of ratings — 30 and 8 respectively. Written reviews point the same way: 73% of Right Angle's written reviews are positive against 0% of Foundation Footing Calculator's.

Right Angle ships an update every 6 days, Foundation Footing Calculator every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Right Angle | Foundation Footing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (30 ratings)](https://appshunter.io/ios/app/right-angle/id292390648/reviews)** | [3.6 (8 ratings)](https://appshunter.io/ios/app/foundation-footing-calculator/id1603432083/reviews) |
| Number of ratings | **30** | 8 |
| Positive reviews | **73.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 3 MB | 8 MB |
| Requires iOS | 26.0 | **16.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Mayers](https://appshunter.io/developer/287638654) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## 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 |

**What reviewers like**

- 👍 Easy to use
- 🚀 Saves time
- 🛠️ Useful for construction/trades
- 📐 Accurate calculations
- 💡 Unique functionality (historically)

**What reviewers complain about**

- 🐛 Recent updates removed key features
- 🐛 In-app purchases required for previously free features
- 🐛 Loss of purchase after update
- 🐛 App now requires payment for features
- 🐛 Misleading free app description

**Reported bugs**

- App crashes after startup
- Update caused app to crash
- Loss of previously purchased unlocked app
- Keyboard covers input fields
- App changes mm to unspecified units

**Requested features**

- Restore fraction support
- Restore feet and inches support
- Provide both angles of a right triangle
- Allow scrolling or hiding the keyboard
- Bundling with other tools


### Foundation Footing Calculator

[App page](https://appshunter.io/ios/app/foundation-footing-calculator/id1603432083)

Instantly calculate concrete foundation requirements, including rebar, excavation volumes, and material costs. Streamline construction planning and estimations with precise, material-specific calculations and smart unit conversions. Ideal for professionals and DIYers alike, it helps reduce errors and speed up project timelines.

**Highlights:** Foundation calculations (strip, slab, diagonal), Rebar quantity and spacing tool, Excavation volume and cost estimator, Smart unit conversion (metric/imperial), Material-specific densities, Offline work capability

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version / monthly | $0.99 | per month |
| Full version / year | $2.99 | per year |
| Remove ADS | $4.99 | one-time |


## Frequently asked questions

### Is Right Angle free?

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

### Is Foundation Footing Calculator free?

Foundation Footing Calculator is free to download, with in-app purchases available.

### Which has better reviews, Right Angle or Foundation Footing Calculator?

Right Angle is rated higher. Right Angle averages 3.9 out of 5 from 30 ratings, while Foundation Footing Calculator averages 3.6 from 8 ratings.

### Do Right Angle or Foundation Footing Calculator have ads?

Neither Right Angle nor Foundation Footing Calculator shows ads.

### Which is updated more often, Right Angle or Foundation Footing Calculator?

Right Angle ships an update every 6 days, and Foundation Footing Calculator every 2 months. Most recently, Right Angle was updated on October 24, 2026 and Foundation Footing Calculator on October 24, 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.*