# Stop Spam vs SolarShield Geomagnetic Alerts

The clearest difference is in-app purchases: SolarShield Geomagnetic Alerts at none against Stop Spam's 4. SolarShield Geomagnetic Alerts also leads on device support (3 vs 1) and iOS requirement (15.5.0 vs 18). On price, update cadence and ads there is nothing between them.

Both are free to download. Stop Spam sells 4 in-app purchases, starting at $4.99 per month. SolarShield Geomagnetic Alerts asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Stop Spam | SolarShield Geomagnetic Alerts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Size | 21 MB | 32 MB |
| Requires iOS | 18 | **15.5.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Serhii Laptii](https://appshunter.io/developer/1802659635) | [Simon McAuliffe](https://appshunter.io/developer/1740443236) |

## What reviewers say

### Stop Spam

[App page](https://appshunter.io/ios/app/stop-spam-call-blocker/id6743408195)

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stop Spam Premium | $4.99 | per month |
| Stop Spam Premium | $7.99 | per 3 months |
| Stop Spam Family Plan | $12.99 | per month |
| Stop Spam Premium | $24.99 | per year |


### 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 Stop Spam free?

Stop Spam is free to download, with in-app purchases available.

### Is SolarShield Geomagnetic Alerts free?

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

### Do Stop Spam or SolarShield Geomagnetic Alerts have ads?

Both Stop Spam and SolarShield Geomagnetic Alerts show ads.

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

Stop Spam ships an update fortnightly, and SolarShield Geomagnetic Alerts fortnightly. Most recently, Stop Spam was updated on October 30, 2026 and SolarShield Geomagnetic Alerts on October 30, 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.*