# Dogl Precalculus vs Trigonometry for Beginners

The clearest difference is review sentiment: Dogl Precalculus at 100% against Trigonometry for Beginners's 0%. Dogl Precalculus also leads on ads (none vs shown) and rating (4.8 vs 4.6). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

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

Dogl Precalculus holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 34 and 33 respectively. Written reviews point the same way: 100% of Dogl Precalculus's written reviews are positive against 0% of Trigonometry for Beginners's.

Dogl Precalculus ships an update every 6 months, Trigonometry for Beginners every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Dogl Precalculus | Trigonometry for Beginners |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (34 ratings)](https://appshunter.io/ios/app/dogl-precalculus/id6670212064/reviews)** | [4.6 (33 ratings)](https://appshunter.io/ios/app/trigonometry-for-beginners/id6741252065/reviews) |
| Number of ratings | **34** | 33 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 36 MB | 12 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dogl](https://appshunter.io/developer/1554140183) | [Aswian Editri Sutriandi](https://appshunter.io/developer/1791663083) |

## 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 |


### Trigonometry for Beginners

[App page](https://appshunter.io/ios/app/trigonometry-for-beginners/id6741252065)

Master trigonometry with interactive lessons and exercises designed for beginners. This app offers step-by-step explanations, fun challenges, and instant feedback to build your confidence from basic angles to word problems.

**Highlights:** Tailored for beginners, Interactive step-by-step lessons, Fun and challenging exercises, Instant feedback on answers, Progressive difficulty levels, Covers angles, right triangles, ratios, and word problems

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Dogl Precalculus free?

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

### Is Trigonometry for Beginners free?

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

### Which has better reviews, Dogl Precalculus or Trigonometry for Beginners?

Dogl Precalculus is rated higher. Dogl Precalculus averages 4.8 out of 5 from 34 ratings, while Trigonometry for Beginners averages 4.6 from 33 ratings.

### Do Dogl Precalculus or Trigonometry for Beginners have ads?

Trigonometry for Beginners shows ads; Dogl Precalculus does not.

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

Dogl Precalculus ships an update every 6 months, and Trigonometry for Beginners every 5 months. Most recently, Dogl Precalculus was updated on October 24, 2026 and Trigonometry for Beginners 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.*