Solar Sphere vs Save to Linkwarden
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar Sphere
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.
- Real-time Kp-index monitoring
- High-resolution solar images
- Kp-index explanation
- Geomagnetic storm indication
- Drone flying safety guidance
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The Solar Sphere provides current value of Kp-index derived from the NOAA Space Weather Prediction Center using data from multiple ground-based magnetometers. Also, current solar images are available in 4 different high resolution formats. The Kp-index quantifies solar disturbances in the horizontal component of earth's magnetic field with an integer in the range 0-9 with 1 being calm and 5 or more indicating a geomagnetic storm. For drone flyers, please only fly on solar KP Index less than 5.
Save to Linkwarden
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Stay organised Choose from your existing Linkwarden collections directly in the popup. No more copying collection IDs by hand. Works your way Set a default collection and default tags so your most common saves require zero extra steps. Everything is stored locally on your device — no third-party accounts, no tracking. Right-click to save Save any link on a page without even opening it — just right-click and choose "Save link to Linkwarden". Self-hosted & private Linkwarden for Safari connects only to your own Linkwarden instance. Your bookmarks, your server, your data. Requirements A running Linkwarden instance (self-hosted or cloud) and an API token from your account settings.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Solar Sphere | Save to Linkwarden |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (7 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 9 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Pulsely Consulting | Weldys Santos |
In-app purchases
Solar Sphere
No in-app purchases
Save to Linkwarden
No in-app purchases
Questions
Is Solar Sphere free?
Is Save to Linkwarden free?
Do Solar Sphere or Save to Linkwarden have ads?
Which is updated more often, Solar Sphere or Save to Linkwarden?
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