# Magnetic Storms vs Ring Sizer

The clearest difference is ads: Ring Sizer at none against Magnetic Storms's shown. Ring Sizer also leads on update cadence (daily vs every 12 months). Magnetic Storms's advantage is iOS requirement (12.4 vs 14.0). 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.

Magnetic Storms ships an update every 12 months, Ring Sizer daily. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Magnetic Storms | Ring Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (19 ratings)](https://appshunter.io/ios/app/magnetic-storms/id575956246/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 81.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 1 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andre Molina](https://appshunter.io/developer/503002385) | [Asil Arslan](https://appshunter.io/developer/1495845191) |

## What reviewers say

### Magnetic Storms

[App page](https://appshunter.io/ios/app/magnetic-storms/id575956246)

Monitor Earth's magnetic field and solar activity in near real-time. Track Kp and A indices, solar wind speed, solar flares, and proton/electron flux. Predict auroras and magnetic storms.

**Highlights:** Real-time magnetic field monitoring, Solar activity tracking, Kp and A Index data, Solar wind speed, Solar flare detection, Proton and electron flux, Aurora prediction

**In-app purchases:** none

**What reviewers like**

- 👍 Informative data
- 👍 Useful for space enthusiasts
- 👍 Good for research
- 👍 Real-time monitoring
- 👍 Helpful for drone pilots

**What reviewers complain about**

- 🐛 App quits updating
- 🐛 Old data
- 🐛 App crashes on startup
- 🐛 App crashes immediately
- 🐛 App crashes on first run

**Reported bugs**

- App quits updating
- Chart not updated
- Crashes on startup
- App crashes immediately
- App crashes on first run

**Requested features**

- Paid version without ads
- Local weather based on location
- Email or notification alerts for major magnetic storms
- Long-term/historical data
- Dark mode option


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-measure-rings/id1658171116)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Magnetic Storms free?

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

### Is Ring Sizer free?

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

### Do Magnetic Storms or Ring Sizer have ads?

Magnetic Storms shows ads; Ring Sizer does not.

### Which is updated more often, Magnetic Storms or Ring Sizer?

Magnetic Storms ships an update every 12 months, and Ring Sizer daily. Most recently, Magnetic Storms was updated on October 23, 2026 and Ring Sizer on October 18, 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.*