# THEOREM CONCEPTS vs BathCheck

The clearest difference is update cadence: BathCheck at every 2 months against THEOREM CONCEPTS's every 9 months. THEOREM CONCEPTS's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment, 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.

THEOREM CONCEPTS ships an update every 9 months, BathCheck every 2 months. The most recent releases landed on September 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | THEOREM CONCEPTS | BathCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bathcheck/id1544430441/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 43 MB | 141 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [THEOREM Pty Ltd](https://appshunter.io/developer/1280266469) | [Showerbuddy New Zealand Ltd](https://appshunter.io/developer/1632177468) |

## What reviewers say

### THEOREM CONCEPTS

[App page](https://appshunter.io/ios/app/theorem-concepts/id1280266470)

This application functions as a remote control specifically for recliners. It allows users to operate their compatible recliner chairs directly from their iPhone or iPod.

**Highlights:** Recliner remote control, iPhone and iPod compatible, Dedicated recliner operation

**Features:** macOS Compatibility

**In-app purchases:** none


### BathCheck

[App page](https://appshunter.io/ios/app/bathcheck/id1544430441)

This app helps assess bathroom dimensions to determine the correct equipment for individuals with mobility impairments. It guides users through inputting measurements to find suitable solutions for shower access without extensive renovations.

**Highlights:** Bathroom dimension input, Mobility impairment solutions, Shower access assessment, Equipment configuration guidance, Alternative to bathroom remodels, Portability information

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is THEOREM CONCEPTS free?

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

### Is BathCheck free?

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

### Do THEOREM CONCEPTS or BathCheck have ads?

Neither THEOREM CONCEPTS nor BathCheck shows ads.

### Which is updated more often, THEOREM CONCEPTS or BathCheck?

THEOREM CONCEPTS ships an update every 9 months, and BathCheck every 2 months. Most recently, THEOREM CONCEPTS was updated on September 28, 2026 and BathCheck on October 6, 2026.

---

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