# CellAtlas vs ReadPilot

The clearest difference is in-app purchases: CellAtlas at none against ReadPilot's 4. ReadPilot's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ReadPilot sells 4 in-app purchases, starting at $4.99 per month. CellAtlas asks for nothing beyond the download.

CellAtlas ships an update every 2 months, ReadPilot every 2 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CellAtlas | ReadPilot |
| --- | --- | --- |
| 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 | **Every 2 days** |
| Monetization | Free | — |
| Size | 106 MB | 33 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CellaVision](https://appshunter.io/developer/1185675201) | [Jun Zhi Wang](https://appshunter.io/developer/1880679459) |

## 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


### ReadPilot

[App page](https://appshunter.io/ios/app/readpilot-translate-textbooks/id6802956389)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 標準版（月） | $4.99 | per month |
| 專業版（月） | $9.99 | per month |
| 標準版（年） | $39.99 | per year |
| 專業版（年） | $74.99 | per year |


## Frequently asked questions

### Is CellAtlas free?

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

### Is ReadPilot free?

ReadPilot is free to download, with in-app purchases available.

### Do CellAtlas or ReadPilot have ads?

Neither CellAtlas nor ReadPilot shows ads.

### Which is updated more often, CellAtlas or ReadPilot?

CellAtlas ships an update every 2 months, and ReadPilot every 2 days. Most recently, CellAtlas was updated on November 1, 2026 and ReadPilot on November 6, 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.*