# SeamSmart vs SolarShield Geomagnetic Alerts

The clearest difference is ads: SeamSmart at none against SolarShield Geomagnetic Alerts's shown. SeamSmart also leads on update cadence (every 4 days vs fortnightly). SolarShield Geomagnetic Alerts's advantage is iOS requirement (15.5.0 vs 17.0). 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.

SeamSmart ships an update every 4 days, SolarShield Geomagnetic Alerts fortnightly. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SeamSmart | SolarShield Geomagnetic Alerts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 2 MB | 32 MB |
| Requires iOS | 17.0 | **15.5.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RWTH Aachen University](https://appshunter.io/developer/371466796) | [Simon McAuliffe](https://appshunter.io/developer/1740443236) |

## What reviewers say

### SeamSmart

[App page](https://appshunter.io/ios/app/seamsmart/id6499210520)

**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 SeamSmart free?

SeamSmart 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 SeamSmart or SolarShield Geomagnetic Alerts have ads?

SolarShield Geomagnetic Alerts shows ads; SeamSmart does not.

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

SeamSmart ships an update every 4 days, and SolarShield Geomagnetic Alerts fortnightly. Most recently, SeamSmart was updated on October 25, 2026 and SolarShield Geomagnetic Alerts on October 6, 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.*