# The Prime Machine vs AdaptiRead

The clearest difference is update cadence: AdaptiRead at daily 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 26.0). On price, ads and in-app purchases there is nothing between them.

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

The Prime Machine ships an update every 3 weeks, AdaptiRead daily. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | The Prime Machine | AdaptiRead |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/the-prime-machine/id1557062170/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 67 MB | 8 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Stephen Jeaco](https://appshunter.io/developer/1484919180) | [博闻 李](https://appshunter.io/developer/1822285024) |

## 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


### AdaptiRead

[App page](https://appshunter.io/ios/app/adaptiread/id6752649356)

**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 AdaptiRead free?

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

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

Neither The Prime Machine nor AdaptiRead shows ads.

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

The Prime Machine ships an update every 3 weeks, and AdaptiRead daily. Most recently, The Prime Machine was updated on October 29, 2026 and AdaptiRead on October 28, 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.*