# ThermoSphere vs Sure Support

The clearest difference is review sentiment: ThermoSphere at 30% against Sure Support's 0%. ThermoSphere also leads on iOS requirement (11.0 vs 17.0). Sure Support's advantage is update cadence (every 3 months vs every 13 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ThermoSphere ships an update every 13 months, Sure Support every 3 months. The most recent releases landed on June 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ThermoSphere | Sure Support |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **30.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 167 MB | 55 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thermogroup UK](https://appshunter.io/developer/915777303) | [Sure (Guernsey) Limited](https://appshunter.io/developer/470848317) |

## What reviewers say

### 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


### Sure Support

[App page](https://appshunter.io/ios/app/sure-support/id1440045359)

Diagnose and resolve common internet connectivity problems. The app runs network tests, provides potential fixes, and gathers information to assist support technicians if issues persist.

**Highlights:** Network tests and diagnostics, Connectivity issue resolution, Step-by-step fix prompts, Support technician information gathering, Internet package optimization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ThermoSphere free?

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

### Is Sure Support free?

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

### Do ThermoSphere or Sure Support have ads?

Neither ThermoSphere nor Sure Support shows ads.

### Which is updated more often, ThermoSphere or Sure Support?

ThermoSphere ships an update every 13 months, and Sure Support every 3 months. Most recently, ThermoSphere was updated on June 1, 2026 and Sure Support on September 16, 2026.

---

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