# Diff Checker vs iMI

The clearest difference is update cadence: iMI at every 4 days against Diff Checker's fortnightly. Diff Checker's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Diff Checker sells 2 in-app purchases, starting at $7.99 per month and iMI sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Diff Checker ships an update fortnightly, iMI every 4 days. The most recent releases landed on October 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Diff Checker | iMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/imi-inference/id6760208856/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 79 MB | 12 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Edusoft Limited](https://appshunter.io/developer/1836364875) | [Michael Kaminski](https://appshunter.io/developer/1870159381) |

## What reviewers say

### Diff Checker

[App page](https://appshunter.io/ios/app/diff-checker-compare-text/id6753902567)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $7.99 | per month |
| Premium Subscription Yearly | $49.99 | per year |


### iMI

[App page](https://appshunter.io/ios/app/imi-inference/id6760208856)

This AI assistant is designed for manufacturing professionals on the shop floor. It provides answers to technical questions, helps troubleshoot issues, and offers tools for optimizing processes and calculating ROI. Securely store and access your private manufacturing documents.

**Highlights:** AI-powered manufacturing Q&A, G-code optimization, Machining strategy generation, Work instruction drafting, ROI calculator, Private on-device document vault

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ArloInference Starter | $9.99 | per month |
| ArloInference Pro | $19.99 | per month |
| 250 Uses — Project Sprint | $4.99 | one-time |
| 600 Uses — Heavy Week Pack | $9.99 | one-time |
| 1500 Uses — Power User Pack | $19.99 | one-time |


## Frequently asked questions

### Is Diff Checker free?

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

### Is iMI free?

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

### Do Diff Checker or iMI have ads?

Neither Diff Checker nor iMI shows ads.

### Which is updated more often, Diff Checker or iMI?

Diff Checker ships an update fortnightly, and iMI every 4 days. Most recently, Diff Checker was updated on October 16, 2026 and iMI on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*