# THEOREM CONCEPTS vs Powersensor

The clearest difference is update cadence: Powersensor at every 5 weeks against THEOREM CONCEPTS's every 9 months. THEOREM CONCEPTS's advantage is monetization model (free vs ad-supported) and iOS requirement (12.0 vs 15.6). 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, Powersensor every 5 weeks. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | THEOREM CONCEPTS | Powersensor |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | **57.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 43 MB | 96 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [THEOREM Pty Ltd](https://appshunter.io/developer/1280266469) | [DiUS Computing](https://appshunter.io/developer/330076135) |

## 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


### Powersensor

[App page](https://appshunter.io/ios/app/powersensor/id1327208438)

Monitor your home's energy consumption and solar generation in real-time. Make informed decisions about energy usage, optimize solar self-consumption, and reduce electricity bills. DIY installation is quick and easy.

**Highlights:** Real-time energy data tracking, Solar generation and consumption monitoring, Appliance-level energy usage insights, DIY wireless installation, Maximizes solar self-consumption, Reduces energy bills

**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 Powersensor free?

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

### Do THEOREM CONCEPTS or Powersensor have ads?

Neither THEOREM CONCEPTS nor Powersensor shows ads.

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

THEOREM CONCEPTS ships an update every 9 months, and Powersensor every 5 weeks. Most recently, THEOREM CONCEPTS was updated on September 28, 2026 and Powersensor on September 25, 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.*