# Solar Sphere vs Save to Linkwarden

The clearest difference is update cadence: Save to Linkwarden at daily against Solar Sphere's every 9 months. Solar Sphere's advantage is iOS requirement (9.0 vs 15.0). On price, ads, 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.

Solar Sphere ships an update every 9 months, Save to Linkwarden daily. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Solar Sphere | Save to Linkwarden |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (7 ratings)](https://appshunter.io/ios/app/solar-sphere/id990396823/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Daily** |
| Monetization | Free | — |
| Size | 3 MB | 4 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Pulsely Consulting](https://appshunter.io/developer/475349326) | [Weldys Santos](https://appshunter.io/developer/1445477914) |

## What reviewers say

### Solar Sphere

[App page](https://appshunter.io/ios/app/solar-sphere/id990396823)

Monitor real-time solar activity with Kp-index data and high-resolution solar images. Understand geomagnetic disturbances and their impact on Earth's magnetic field. Ideal for drone pilots needing to check conditions before flying.

**Highlights:** Real-time Kp-index monitoring, High-resolution solar images, Kp-index explanation, Geomagnetic storm indication, Drone flying safety guidance

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Save to Linkwarden

[App page](https://appshunter.io/ios/app/save-to-linkwarden/id6765741439)

**Features:** Safari Extension

**In-app purchases:** none


## Frequently asked questions

### Is Solar Sphere free?

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

### Is Save to Linkwarden free?

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

### Do Solar Sphere or Save to Linkwarden have ads?

Neither Solar Sphere nor Save to Linkwarden shows ads.

### Which is updated more often, Solar Sphere or Save to Linkwarden?

Solar Sphere ships an update every 9 months, and Save to Linkwarden daily. Most recently, Solar Sphere was updated on October 26, 2026 and Save to Linkwarden on October 25, 2026.

---

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