# Dogl Precalculus vs Chalk

The clearest difference is review sentiment: Dogl Precalculus at 100% against Chalk's 33%. Dogl Precalculus also leads on rating (4.8 vs 4.0) and ratings volume (34 vs 4). Chalk's advantage is update cadence (every 5 days vs every 6 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Dogl Precalculus sells 2 one-off in-app purchases and Chalk sells 7 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Dogl Precalculus holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Dogl Precalculus has 34 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Dogl Precalculus's written reviews are positive against 33% of Chalk's.

Dogl Precalculus ships an update every 6 months, Chalk every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dogl Precalculus | Chalk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (34 ratings)](https://appshunter.io/ios/app/dogl-precalculus/id6670212064/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/chalk-ai-math-tutor/id6762059558/reviews) |
| Number of ratings | **34** | 4 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 36 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dogl](https://appshunter.io/developer/1554140183) | [Tyler Hayes](https://appshunter.io/developer/1856083936) |

## 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 |


### Chalk

[App page](https://appshunter.io/ios/app/chalk-ai-math-tutor/id6762059558)

This AI-powered math tutor visually explains concepts step-by-step on a digital whiteboard, offering personalized guidance and identifying errors. It covers a wide range of math subjects, adapting to your learning pace and progress.

**Highlights:** Visual step-by-step explanations, Real handwriting on digital whiteboard, Audible reasoning and explanations, Live error detection and correction, Comprehensive math subject coverage, Adaptive learning and progress tracking

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chalk Lite | $7.99 | per month |
| Chalk Lite | $7.99 | per month |
| Chalk Plus | $11.99 | per month |
| Chalk Unlimited | $19.99 | per month |
| Chalk Lite (Yearly) | $59.99 | per year |
| Chalk Plus (Yearly) | $83.99 | per year |
| Chalk Unlimited (Yearly) | $119.99 | per year |


## Frequently asked questions

### Is Dogl Precalculus free?

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

### Is Chalk free?

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

### Which has better reviews, Dogl Precalculus or Chalk?

Dogl Precalculus is rated higher. Dogl Precalculus averages 4.8 out of 5 from 34 ratings, while Chalk averages 4.0 from 4 ratings.

### Do Dogl Precalculus or Chalk have ads?

Neither Dogl Precalculus nor Chalk shows ads.

### Which is updated more often, Dogl Precalculus or Chalk?

Dogl Precalculus ships an update every 6 months, and Chalk every 5 days. Most recently, Dogl Precalculus was updated on October 24, 2026 and Chalk on October 31, 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.*