# ERB CTP Online vs DAC App

The clearest difference is ratings volume: ERB CTP Online at 324 against DAC App's 16. ERB CTP Online also leads on iOS requirement (10.2 vs 15.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 1.6 for ERB CTP Online against 1.8 for DAC App. That said, the two scores are not equally well evidenced: ERB CTP Online has 324 ratings behind it against 16, so its average is the more settled of the two. Written reviews split almost evenly too, at 19% and 20% positive.

ERB CTP Online ships an update every 8 months, DAC App every 12 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | ERB CTP Online | DAC App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (324 ratings)](https://appshunter.io/ios/app/erb-ctp-online/id555673248/reviews) | **[1.8 (16 ratings)](https://appshunter.io/ios/app/dac-app/id1162772990/reviews)** |
| Number of ratings | **324** | 16 |
| Positive reviews | 19.3% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 6 MB | 16 MB |
| Requires iOS | **10.2** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Internet Testing Systems (ITS)](https://appshunter.io/developer/546817214) | [Educational Testing Service](https://appshunter.io/developer/923503056) |

## What reviewers say

### ERB CTP Online

[App page](https://appshunter.io/ios/app/erb-ctp-online/id555673248)

This app provides a battery of assessments in listening, reading, vocabulary, writing, and mathematics. It offers instant scoring and feedback for real-time guidance on student learning. The program also includes tests for verbal and quantitative reasoning.

**Highlights:** Listening assessment, Reading assessment, Vocabulary and writing tests, Mathematics assessment, Verbal and quantitative reasoning tests, Instant scoring and feedback

**In-app purchases:** none

**What reviewers like**

- 🤩 Engaging and addictive gameplay
- 🎓 Helpful educational content
- 👍 Intuitive user interface

**What reviewers complain about**

- 🐛 Frequent crashes and technical issues
- 🕰️ Excessively long and tedious tests
- 💤 Boring and uninspired design
- 🔒 Locked device during testing

**Reported bugs**

- Freezing and lagging during tests
- Inability to exit the app during testing
- Compatibility issues with older devices

**Requested features**

- Improved graphics and visuals
- Customizable controls and settings
- More engaging and interactive learning experiences


### DAC App

[App page](https://appshunter.io/ios/app/dac-app/id1162772990)

This free application simplifies the recording of student audio responses for specific AP exams. It streamlines the process for both students and proctors, and automatically uploads audio files for school staff. Designed for use on school-issued iPads.

**Highlights:** Record audio responses for AP exams, Simplify recording process, Intuitive interface for students, Streamline post-exam tasks, Direct upload of audio files, Designed for school-owned iPads

**In-app purchases:** none


## Frequently asked questions

### Is ERB CTP Online free?

ERB CTP Online is free to download, with no in-app purchases.

### Is DAC App free?

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

### Which has better reviews, ERB CTP Online or DAC App?

DAC App is rated higher. ERB CTP Online averages 1.6 out of 5 from 324 ratings, while DAC App averages 1.8 from 16 ratings.

### Do ERB CTP Online or DAC App have ads?

Neither ERB CTP Online nor DAC App shows ads.

### Which is updated more often, ERB CTP Online or DAC App?

ERB CTP Online ships an update every 8 months, and DAC App every 12 months. Most recently, ERB CTP Online was updated on November 1, 2026 and DAC App on November 2, 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.*