# ThermoThink vs SolarShield Geomagnetic Alerts

The clearest difference is ads: ThermoThink at none against SolarShield Geomagnetic Alerts's shown. ThermoThink also leads on iOS requirement (12.0 vs 15.5.0). SolarShield Geomagnetic Alerts's advantage is update cadence (fortnightly vs every 2 months). On price, in-app purchases and device support there is nothing between them.

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

ThermoThink ships an update every 2 months, SolarShield Geomagnetic Alerts fortnightly. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ThermoThink | SolarShield Geomagnetic Alerts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 10 MB | 32 MB |
| Requires iOS | **12.0** | 15.5.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Acutulus Technologies Inc](https://appshunter.io/developer/1294049355) | [Simon McAuliffe](https://appshunter.io/developer/1740443236) |

## What reviewers say

### ThermoThink

[App page](https://appshunter.io/ios/app/thermothink/id1294049356)

**Features:** macOS Compatibility

**In-app purchases:** none


### SolarShield Geomagnetic Alerts

[App page](https://appshunter.io/ios/app/solarshield-geomagnetic-alerts/id6747309109)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ThermoThink free?

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

### Is SolarShield Geomagnetic Alerts free?

SolarShield Geomagnetic Alerts is free to download, with no in-app purchases.

### Do ThermoThink or SolarShield Geomagnetic Alerts have ads?

SolarShield Geomagnetic Alerts shows ads; ThermoThink does not.

### Which is updated more often, ThermoThink or SolarShield Geomagnetic Alerts?

ThermoThink ships an update every 2 months, and SolarShield Geomagnetic Alerts fortnightly. Most recently, ThermoThink was updated on October 18, 2026 and SolarShield Geomagnetic Alerts 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.*