# Trigonometry calc vs Formulae Community

The clearest difference is ads: Formulae Community at none against Trigonometry calc's shown. Formulae Community also leads on update cadence (every 2 days vs every 3 months) and iOS requirement (11.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Trigonometry calc sells 1 one-off in-app purchase and Formulae Community sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Trigonometry calc ships an update every 3 months, Formulae Community every 2 days. The most recent releases landed on September 6, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Trigonometry calc | Formulae Community |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-calc/id1306864057/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 53 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bo Kalvslund](https://appshunter.io/developer/572272193) | [CAPDESIS S.A. DE C.V.](https://appshunter.io/developer/1639711954) |

## What reviewers say

### Trigonometry calc

[App page](https://appshunter.io/ios/app/trigonometry-calc/id1306864057)

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

**Highlights:** Calculate side lengths, Calculate angles, Pythagorean Theorem, Trigonometry functions, Learn simple trigonometry, General triangle calculator (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


### Formulae Community

[App page](https://appshunter.io/ios/app/formulae-community/id6445803819)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chat Semanal | $3.99 | per 7 days |
| Chat Mensual | $7.99 | per month |
| Chat Anual | $79.99 | per year |


## Frequently asked questions

### Is Trigonometry calc free?

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

### Is Formulae Community free?

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

### Do Trigonometry calc or Formulae Community have ads?

Trigonometry calc shows ads; Formulae Community does not.

### Which is updated more often, Trigonometry calc or Formulae Community?

Trigonometry calc ships an update every 3 months, and Formulae Community every 2 days. Most recently, Trigonometry calc was updated on September 6, 2026 and Formulae Community on September 9, 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.*