# Theia Inspections & Fitting vs Activity Study

The clearest difference is device support: Theia Inspections & Fitting at 3 against Activity Study's 1. Theia Inspections & Fitting also leads on iOS requirement (13.4 vs 15.1). On price, update cadence, 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.

Theia Inspections & Fitting ships an update every 2 months, Activity Study every 6 weeks. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Theia Inspections & Fitting | Activity Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 28 MB | 31 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [Langley Foxall Ltd](https://appshunter.io/developer/1138808108) | [ReTime](https://appshunter.io/developer/1680752278) |

## What reviewers say

### Theia Inspections & Fitting

[App page](https://appshunter.io/ios/app/theia-inspections-and-fitting/id1570278382)

**Features:** macOS Compatibility

**In-app purchases:** none


### Activity Study

[App page](https://appshunter.io/ios/app/activity-study/id6463711406)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Theia Inspections & Fitting free?

Theia Inspections & Fitting is free to download, with no in-app purchases.

### Is Activity Study free?

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

### Do Theia Inspections & Fitting or Activity Study have ads?

Neither Theia Inspections & Fitting nor Activity Study shows ads.

### Which is updated more often, Theia Inspections & Fitting or Activity Study?

Theia Inspections & Fitting ships an update every 2 months, and Activity Study every 6 weeks. Most recently, Theia Inspections & Fitting was updated on October 15, 2026 and Activity Study on October 27, 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.*