# Trigonometry Master vs BA Buddy

The clearest difference is price: BA Buddy at Free against Trigonometry Master's $12.99. BA Buddy also leads on update cadence (every 2 days vs every 10 months). Trigonometry Master's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 13.0). On ads and device support there is nothing between them.

BA Buddy is free to download; Trigonometry Master costs $12.99 up front. BA Buddy sells 3 one-off in-app purchases. Trigonometry Master asks for nothing beyond the download.

Trigonometry Master ships an update every 10 months, BA Buddy every 2 days. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Trigonometry Master | BA Buddy |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/trigonometry-master/id1389001905/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 12 MB | 92 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [AMS Cockpit GmbH](https://appshunter.io/developer/1847828036) |

## What reviewers say

### Trigonometry Master

[App page](https://appshunter.io/ios/app/trigonometry-master/id1389001905)

Easily calculate unknown sides, angles, area, and perimeter of any triangle. Supports both right and oblique triangles with visual input modes and adjustable decimal places for accuracy. Includes a history tape and email sharing for recent calculations.

**Highlights:** Solves right and oblique triangles, Calculates sides, angles, area, perimeter, Draws calculated triangles, Supports degrees and radians, Visual input modes, Adjustable decimal places, History tape and email results

**Features:** Vision Pro support

**In-app purchases:** none


### BA Buddy

[App page](https://appshunter.io/ios/app/ba-buddy/id6760627198)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Betriebsanweisung | $1.99 | one-time |
| 10 Betriebsanweisungen | $9.99 | one-time |
| 100 Betriebsanweisungen | $49.99 | one-time |


## Frequently asked questions

### Is Trigonometry Master free?

Trigonometry Master costs $12.99, with no in-app purchases.

### Is BA Buddy free?

BA Buddy is free to download, with in-app purchases available.

### Do Trigonometry Master or BA Buddy have ads?

Neither Trigonometry Master nor BA Buddy shows ads.

### Which is updated more often, Trigonometry Master or BA Buddy?

Trigonometry Master ships an update every 10 months, and BA Buddy every 2 days. Most recently, Trigonometry Master was updated on October 14, 2026 and BA Buddy on October 1, 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.*