# The Prime Machine vs SPARC_Rowan

The clearest difference is update cadence: SPARC_Rowan at weekly against The Prime Machine's every 3 weeks. The Prime Machine's advantage is device support (4 vs 2) and iOS requirement (11.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for The Prime Machine against 5.0 for SPARC_Rowan. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

The Prime Machine ships an update every 3 weeks, SPARC_Rowan weekly. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | The Prime Machine | SPARC_Rowan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/the-prime-machine/id1557062170/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/sparc-rowan/id6447313595/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 67 MB | 2.4 GB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Stephen Jeaco](https://appshunter.io/developer/1484919180) | [Ying Tang](https://appshunter.io/developer/1803456332) |

## What reviewers say

### The Prime Machine

[App page](https://appshunter.io/ios/app/the-prime-machine/id1557062170)

Analyze text documents and pre-made English language corpora. Explore word frequencies, collocations, and concordance lines. Create and analyze your own custom text collections.

**Highlights:** Analyze readymade English corpora, Analyze DIY corpora from text/PDF, View concordance lines (lines or cards), Access frequency data, Explore collocations, Full Mode research tools

**In-app purchases:** none


### SPARC_Rowan

[App page](https://appshunter.io/ios/app/sparc-rowan/id6447313595)

Explore the human body's cells and blood circulation with this educational app. Learn about red and white blood cells, platelets, and albumin, along with basic cell structure and principles of force and motion.

**Highlights:** Human body cell education, Blood circulation simulation, White blood cell details, Red blood cell details, Platelet and albumin information, Basic cell structure, Force and motion concepts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Prime Machine free?

The Prime Machine is free to download, with no in-app purchases.

### Is SPARC_Rowan free?

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

### Which has better reviews, The Prime Machine or SPARC_Rowan?

The Prime Machine and SPARC_Rowan are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do The Prime Machine or SPARC_Rowan have ads?

Neither The Prime Machine nor SPARC_Rowan shows ads.

### Which is updated more often, The Prime Machine or SPARC_Rowan?

The Prime Machine ships an update every 3 weeks, and SPARC_Rowan weekly. Most recently, The Prime Machine was updated on October 20, 2026 and SPARC_Rowan on October 21, 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.*