# SWATT® vs ThermoSphere

The clearest difference is update cadence: SWATT® at every 6 weeks against ThermoSphere's every 13 months. ThermoSphere's advantage is iOS requirement (11.0 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.

SWATT® ships an update every 6 weeks, ThermoSphere every 13 months. The most recent releases landed on September 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | SWATT® | ThermoSphere |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **31.3% of reviews** | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 13 months |
| Monetization | Free | Free |
| Size | 52 MB | 167 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [OJ ELECTRONICS AS](https://appshunter.io/developer/1326069502) | [Thermogroup UK](https://appshunter.io/developer/915777303) |

## What reviewers say

### SWATT®

[App page](https://appshunter.io/ios/app/swatt/id1334128169)

Remotely control your home heating system from any location with this intuitive app. View and set temperatures, adjust heating schedules, activate vacation mode, and monitor energy consumption for maximum savings and comfort.

**Highlights:** Remote temperature control, View and set heating schedules, Vacation mode scheduling, Energy consumption monitoring, Access multiple thermostats, Control thermostats individually or in groups

**In-app purchases:** none


### ThermoSphere

[App page](https://appshunter.io/ios/app/thermosphere/id1435864290)

Easily manage your ThermoSphere electric heating devices from anywhere in the world. Control heating manually, set intelligent schedules, and access device settings all from your smartphone.

**Highlights:** Remote device control, Heating schedule creation, Manual control options, Access device settings, Compatible with various ThermoSphere devices

**In-app purchases:** none


## Frequently asked questions

### Is SWATT® free?

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

### Is ThermoSphere free?

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

### Do SWATT® or ThermoSphere have ads?

Neither SWATT® nor ThermoSphere shows ads.

### Which is updated more often, SWATT® or ThermoSphere?

SWATT® ships an update every 6 weeks, and ThermoSphere every 13 months. Most recently, SWATT® was updated on September 11, 2026 and ThermoSphere on June 1, 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.*