# TERC EarthLabs vs DAC App

The clearest difference is rating: TERC EarthLabs at 5.0 against DAC App's 1.8. TERC EarthLabs also leads on review sentiment (40% vs 20%) and iOS requirement (8.0 vs 15.0). DAC App's advantage is update cadence (every 12 months vs every 53 months) and ratings volume (16 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

TERC EarthLabs holds the better App Store score, 5.0 against 1.8. That said, the two scores are not equally well evidenced: DAC App has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 40% of TERC EarthLabs's written reviews are positive against 20% of DAC App's.

TERC EarthLabs ships an update every 53 months, DAC App every 12 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | TERC EarthLabs | DAC App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/terc-earthlabs/id929008909/reviews)** | [1.8 (16 ratings)](https://appshunter.io/ios/app/dac-app/id1162772990/reviews) |
| Number of ratings | 1 | **16** |
| Positive reviews | **40.0% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 53 months | **Every 12 months** |
| Monetization | Free | Free |
| Size | 40 MB | 16 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [TERC, Inc.](https://appshunter.io/developer/663250154) | [Educational Testing Service](https://appshunter.io/developer/923503056) |

## What reviewers say

### TERC EarthLabs

[App page](https://appshunter.io/ios/app/terc-earthlabs/id929008909)

This app offers free high school Earth science curriculum units with interactive visualizations, videos, and hands-on labs. It allows users to run Flash-based videos and interactives on their iPad for engaging science education.

**Highlights:** Interactive visualizations, Video content, Hands-on labs, Flash-based interactives, Curriculum units

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 TERC EarthLabs free?

TERC EarthLabs 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, TERC EarthLabs or DAC App?

TERC EarthLabs is rated higher. TERC EarthLabs averages 5.0 out of 5 from 1 ratings, while DAC App averages 1.8 from 16 ratings.

### Do TERC EarthLabs or DAC App have ads?

Neither TERC EarthLabs nor DAC App shows ads.

### Which is updated more often, TERC EarthLabs or DAC App?

TERC EarthLabs ships an update every 53 months, and DAC App every 12 months. Most recently, TERC EarthLabs 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.*