# AAACF vs Dogl Precalculus

The clearest difference is in-app purchases: AAACF at none against Dogl Precalculus's 2. AAACF also leads on iOS requirement (11.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Dogl Precalculus sells 2 one-off in-app purchases. AAACF asks for nothing beyond the download.

AAACF ships an update every 3 months, Dogl Precalculus every 6 months. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | AAACF | Dogl Precalculus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (34 ratings)](https://appshunter.io/ios/app/dogl-precalculus/id6670212064/reviews)** |
| Number of ratings | — | **34** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 58 MB | 36 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Engage2Serve](https://appshunter.io/developer/1246080767) | [Dogl](https://appshunter.io/developer/1554140183) |

## What reviewers say

### AAACF

[App page](https://appshunter.io/ios/app/aaacf-csp-connect/id6478490468)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is AAACF free?

AAACF is free to download, with no in-app purchases.

### Is Dogl Precalculus free?

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

### Do AAACF or Dogl Precalculus have ads?

Neither AAACF nor Dogl Precalculus shows ads.

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

AAACF ships an update every 3 months, and Dogl Precalculus every 6 months. Most recently, AAACF was updated on November 8, 2026 and Dogl Precalculus on October 30, 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.*