# CellAtlas vs MLS Exam Prep

The clearest difference is in-app purchases: CellAtlas at none against MLS Exam Prep's 1. CellAtlas also leads on device support (3 vs 1). MLS Exam Prep's advantage is update cadence (fortnightly vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. MLS Exam Prep sells 1 one-off in-app purchase. CellAtlas asks for nothing beyond the download.

CellAtlas ships an update every 2 months, MLS Exam Prep fortnightly. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | CellAtlas | MLS Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (22 ratings)](https://appshunter.io/ios/app/cellatlas/id413226907/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 84.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 106 MB | 74 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [CellaVision](https://appshunter.io/developer/1185675201) | [Jinyoung Lee](https://appshunter.io/developer/1880091360) |

## 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


### MLS Exam Prep

[App page](https://appshunter.io/ios/app/mls-exam-prep-med-lab-sci/id6776823938)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium — Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is CellAtlas free?

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

### Is MLS Exam Prep free?

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

### Do CellAtlas or MLS Exam Prep have ads?

Neither CellAtlas nor MLS Exam Prep shows ads.

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

CellAtlas ships an update every 2 months, and MLS Exam Prep fortnightly. Most recently, CellAtlas was updated on October 15, 2026 and MLS Exam Prep on October 1, 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.*