# Data Collection vs Chemistutor

The clearest difference is price: Chemistutor at Free against Data Collection's $0.99. Chemistutor also leads on rating (4.0 vs 3.1) and review sentiment (76% vs 61%). Data Collection's advantage is update cadence (every 2 months vs every 12 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Chemistutor is free to download; Data Collection costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chemistutor holds the better App Store score, 4.0 against 3.1. Both are backed by a comparable volume of ratings — 10 and 27 respectively. Written reviews point the same way: 61% of Data Collection's written reviews are positive against 76% of Chemistutor's.

Data Collection ships an update every 2 months, Chemistutor every 12 months. The most recent releases landed on September 17, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | Data Collection | Chemistutor |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.1 (10 ratings)](https://appshunter.io/ios/app/data-collection/id479348835/reviews) | **[4.0 (27 ratings)](https://appshunter.io/ios/app/chemistutor/id6670772147/reviews)** |
| Number of ratings | 10 | **27** |
| Positive reviews | 60.9% of reviews | **76.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 25 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chris Wozny](https://appshunter.io/developer/479348838) | [Jonathan Davis Miller](https://appshunter.io/developer/1767512630) |

## What reviewers say

### Data Collection

[App page](https://appshunter.io/ios/app/data-collection/id479348835)

This app allows researchers to capture accelerometer, gyroscope, and magnetometer data directly from their iOS devices. It time stamps the captured data and includes Apple's enhanced device motion for research or experimentation.

**Highlights:** Capture accelerometer data, Capture gyroscope data, Capture magnetometer data, Time-stamped data, Includes enhanced device motion data

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

**In-app purchases:** none


### Chemistutor

[App page](https://appshunter.io/ios/app/chemistutor/id6670772147)

Master AP Chemistry with this comprehensive study tool. It offers readings, diagrams, and example problems aligned with the AP curriculum. Learn anytime, anywhere, without distractions, to achieve success in a challenging course.

**Highlights:** AP Chemistry curriculum coverage, 100+ concise lessons, Readings, diagrams, and example problems, No ads or in-app purchases, Learn anytime, anywhere, iPhone and iPad compatible

**In-app purchases:** none


## Frequently asked questions

### Is Data Collection free?

Data Collection costs $0.99, with no in-app purchases.

### Is Chemistutor free?

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

### Which has better reviews, Data Collection or Chemistutor?

Chemistutor is rated higher. Data Collection averages 3.1 out of 5 from 10 ratings, while Chemistutor averages 4.0 from 27 ratings.

### Do Data Collection or Chemistutor have ads?

Neither Data Collection nor Chemistutor shows ads.

### Which is updated more often, Data Collection or Chemistutor?

Data Collection ships an update every 2 months, and Chemistutor every 12 months. Most recently, Data Collection was updated on September 17, 2026 and Chemistutor on August 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*