# CellAtlas vs Prep Interactive Exam Quiz

The clearest difference is review sentiment: CellAtlas at 84% against Prep Interactive Exam Quiz's 0%. CellAtlas also leads on in-app purchases (none vs 14). Prep Interactive Exam Quiz's advantage is update cadence (every 2 weeks vs every 2 months) and rating (3.5 vs 3.2). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Prep Interactive Exam Quiz sells 14 one-off in-app purchases. CellAtlas asks for nothing beyond the download.

Prep Interactive Exam Quiz holds the better App Store score, 3.5 against 3.2. Both are backed by a comparable volume of ratings — 22 and 37 respectively. Written reviews complicate that: 84% of CellAtlas's written reviews are positive against 0% of Prep Interactive Exam Quiz's, so the app with the better star average is not the one people write more warmly about.

CellAtlas ships an update every 2 months, Prep Interactive Exam Quiz every 2 weeks. The most recent releases landed on October 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | CellAtlas | Prep Interactive Exam Quiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (22 ratings)](https://appshunter.io/ios/app/cellatlas/id413226907/reviews) | **[3.5 (37 ratings)](https://appshunter.io/ios/app/prep-interactive-exam-quiz/id1438316050/reviews)** |
| Number of ratings | 22 | **37** |
| Positive reviews | **84.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 106 MB | 141 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CellaVision](https://appshunter.io/developer/1185675201) | [Sayma Tasnim](https://appshunter.io/developer/1387287378) |

## What reviewers say

### CellAtlas

[App page](https://appshunter.io/ios/app/cellatlas/id413226907)

Explore blood cell morphology with expert-written lectures and a vast image database. Test your knowledge with an engaging quiz game designed for efficient learning.

**Highlights:** Blood cell morphology guide, Expert-written mini lectures, Extensive cell image database, CellQuiz game, Knowledge testing

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great for learning morphology
- 👍 Helpful study tool
- 👍 Fun quiz format
- 👍 Easy to navigate
- 👍 Good for review

**What reviewers complain about**

- ⏰ Ridiculous timer
- ⏰ Too little time
- ⏰ Timer causes mistakes
- ⏰ Timer prevents practice
- 🐛 Quiz is broken/rigged

**Reported bugs**

- Timer is too short
- Quiz moves too slowly after correct answer
- Duplicate images that only one counts
- App not opening on some devices
- Missing WBCs

**Requested features**

- Remove timer option
- Untimed mode
- More time for quizzes
- Quizzes for specific cells/sections
- More images/examples


### Prep Interactive Exam Quiz

[App page](https://appshunter.io/ios/app/prep-interactive-exam-quiz/id1438316050)

This app provides a comprehensive study guide for a vast array of professional certifications and academic subjects. It covers topics from accounting and healthcare to IT and trades, offering a wide range of learning materials for exam preparation.

**Highlights:** 300+ study topics, Professional certification prep, Academic subject review, Wide range of disciplines, Exam practice materials

**Features:** macOS Compatibility

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CIA Part 1 MCQ Exam Practice | $6.99 | one-time |
| ABO Test Prep | $6.99 | one-time |
| CSET Subtest I Practice Test | $6.99 | one-time |
| CSET Subtest II Test Prep | $6.99 | one-time |
| LPIC 2 Cert 201 450 202 450 | $6.99 | one-time |
| LINUX Administration Test Prep | $6.99 | one-time |
| NPTE Test Prep | $6.99 | one-time |
| WELDING Test Prep | $6.99 | one-time |
| NEC Code Test Prep | $6.99 | one-time |
| CNSC Test Prep | $6.99 | one-time |
| Computer Fundamental Test Prep | $6.99 | one-time |
| Asthma Educator Test Prep | $6.99 | one-time |
| Big Data and Hadoop Test prep | $6.99 | one-time |
| MBLEx Exam Prep Pro | $29.99 | one-time |


## Frequently asked questions

### Is CellAtlas free?

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

### Is Prep Interactive Exam Quiz free?

Prep Interactive Exam Quiz is free to download, with in-app purchases available.

### Which has better reviews, CellAtlas or Prep Interactive Exam Quiz?

Prep Interactive Exam Quiz is rated higher. CellAtlas averages 3.2 out of 5 from 22 ratings, while Prep Interactive Exam Quiz averages 3.5 from 37 ratings.

### Do CellAtlas or Prep Interactive Exam Quiz have ads?

Neither CellAtlas nor Prep Interactive Exam Quiz shows ads.

### Which is updated more often, CellAtlas or Prep Interactive Exam Quiz?

CellAtlas ships an update every 2 months, and Prep Interactive Exam Quiz every 2 weeks. Most recently, CellAtlas was updated on October 15, 2026 and Prep Interactive Exam Quiz on September 23, 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.*