Twinkle Clock vs SkyNapse
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Twinkle Clock
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Twinkle Clock turns your screen into a night sky — a clock face made of twinkling stars and constellations. FREE • 12 zodiac constellations, swipe to switch • A twinkling starfield with the time overlaid on constellation lines PRO (one-time purchase) • All 88 official constellations • ~8,900 naked-eye stars across the whole sky • The Milky Way and the Moon & planets (Mercury–Saturn) • Nebulae, star clusters, and galaxies • Tap any star, the Moon, or a planet to read about it • Time Travel — pick any date and time to see what the sky looked like (or will look like) • Major meteor shower activity windows Available on iPhone, iPad, Mac, Apple TV, and Apple Vision Pro.
SkyNapse
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SkyNapse helps you decide when it is worth looking up. Instead of overwhelming you with astronomical data, SkyNapse combines live sky conditions, astronomy events, aurora forecasts, satellite tracking and observation planning into one elegant experience.
Screenshots
Verdict
The clearest difference is in-app purchases: SkyNapse at none against Twinkle Clock's 1. SkyNapse also leads on iOS requirement (15.0 vs 17.0). On price, ads 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. Twinkle Clock sells 1 one-off in-app purchase. SkyNapse asks for nothing beyond the download.
| Parameter | Twinkle Clock | SkyNapse |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyasu Hirai | Pawel Piatkowski |
In-app purchases
Twinkle Clock
- Twinkle Clock Pro$24.99
SkyNapse
No in-app purchases
