# Dogl Precalculus vs Beautiful Trigonometry

The clearest difference is iOS requirement: Dogl Precalculus at 15.6 against Beautiful Trigonometry's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Dogl Precalculus sells 2 one-off in-app purchases and Beautiful Trigonometry sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Dogl Precalculus ships an update every 6 months, Beautiful Trigonometry every 3 months. The most recent releases landed on October 9, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Dogl Precalculus | Beautiful Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (17 ratings)](https://appshunter.io/ios/app/dogl-precalculus/id6670212064/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 8 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dogl](https://appshunter.io/developer/1554140183) | [Tomasz Rygula](https://appshunter.io/developer/879228654) |

## What reviewers say

### Dogl Precalculus

[App page](https://appshunter.io/ios/app/dogl-precalculus/id6670212064)

Master Precalculus with this app designed by university professors. It offers bite-sized problem-solving, personalized learning paths, and visual hints to guide you. Start with 100 free problems and unlock more weekly, with optional upgrades for unlimited access.

**Highlights:** Bite-sized problem-solving, Personalized learning paths, Visual hints for guidance, 100 free starter problems, Weekly free problem unlocks, Ad-free experience, AP Precalculus curriculum compatible

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Plan - 4 months | $0.99 | one-time |
| Unlimited Plan - 1 year | $1.99 | one-time |


### Beautiful Trigonometry

[App page](https://appshunter.io/ios/app/beautiful-trigonometry/id6746460113)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Trigonometry Access | $1.99 | one-time |


## Frequently asked questions

### Is Dogl Precalculus free?

Dogl Precalculus is free to download, with in-app purchases available.

### Is Beautiful Trigonometry free?

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

### Do Dogl Precalculus or Beautiful Trigonometry have ads?

Neither Dogl Precalculus nor Beautiful Trigonometry shows ads.

### Which is updated more often, Dogl Precalculus or Beautiful Trigonometry?

Dogl Precalculus ships an update every 6 months, and Beautiful Trigonometry every 3 months. Most recently, Dogl Precalculus was updated on October 9, 2026 and Beautiful Trigonometry on September 18, 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.*