# Trigonometry Formulas vs Knowledge Foundation Academy

The clearest difference is price: Knowledge Foundation Academy at Free against Trigonometry Formulas's $0.99. Trigonometry Formulas's advantage is iOS requirement (13.0 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Knowledge Foundation Academy is free to download; Trigonometry Formulas costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trigonometry Formulas ships an update every 10 months, Knowledge Foundation Academy every 6 months. The most recent releases landed on October 2, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Trigonometry Formulas | Knowledge Foundation Academy |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Paid | — |
| Size | 27 MB | 81 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ranjeet Kumar](https://appshunter.io/developer/1476822683) | [DYNAMIC TECHNOSOFT](https://appshunter.io/developer/1607803655) |

## What reviewers say

### Trigonometry Formulas

[App page](https://appshunter.io/ios/app/trigonometry-formulas/id1477059658)

Access a comprehensive collection of trigonometry formulas, including ratios, functions, standard angle values, and identities. This app covers basic to advanced topics like inverse circular functions and properties of triangles, serving as a handy reference for students and enthusiasts.

**Highlights:** Trigonometric Ratios and Functions, Basic Trigonometric Formulas, Standard Angle Values, Quadrant Rules of Signs, Addition and Subtraction Formulas, Inverse Circular Functions, Properties of Triangles

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

**In-app purchases:** none


### Knowledge Foundation Academy

[App page](https://appshunter.io/ios/app/knowledge-foundation-academy/id6477149169)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry Formulas free?

Trigonometry Formulas costs $0.99, with no in-app purchases.

### Is Knowledge Foundation Academy free?

Knowledge Foundation Academy is free to download, with no in-app purchases.

### Do Trigonometry Formulas or Knowledge Foundation Academy have ads?

Neither Trigonometry Formulas nor Knowledge Foundation Academy shows ads.

### Which is updated more often, Trigonometry Formulas or Knowledge Foundation Academy?

Trigonometry Formulas ships an update every 10 months, and Knowledge Foundation Academy every 6 months. Most recently, Trigonometry Formulas was updated on October 2, 2026 and Knowledge Foundation Academy on September 20, 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.*