Spinner Speed vs Krun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spinner Speed
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See how fast your fidget spinner spins! Just hold the spinner in front of the camera and instantly see the current speed! FEATURES - Use the camera to measure the rotation speed - Measure rotation speed in recorded videos (slow motion video works best) - If you don't have a spinner, try other spinning things or look at the example in the app
Krun
Engage with a digital pinwheel that creates captivating optical illusions as it spins and slows. Customize shapes, colors, and speed for a unique visual experience. It's a simple yet mesmerizing tool for all ages.
- Swipe-to-spin pinwheels
- Illusions appear as rotation slows
- Shape, color, and speed customization
- Unlock all content
- Remove ads
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Spin a pinwheel and watch hidden shapes appear while it's moving. Swipe to spin, then enjoy optical illusions as the speed changes. Simple and intuitive for kids and adults. • Swipe-to-spin pinwheels • Illusions that appear as rotation slows • Shape, color, and speed customization • Premium: unlock all and remove ads
Screenshots
Verdict
The clearest difference is in-app purchases: Spinner Speed at none against Krun's 1. Spinner Speed also leads on ads (none vs shown) and iOS requirement (10.0 vs 16.6). On price 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. Krun sells 1 one-off in-app purchase. Spinner Speed asks for nothing beyond the download.
| Parameter | Spinner Speed | Krun |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 3 days |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, Apple Watch — better |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 54 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Wendler | Shinichiro Eto |
In-app purchases
Spinner Speed
No in-app purchases
Krun
- Premium Unlock$2.99
