Skyfield vs ClearNight
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Skyfield
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Skyfield answers the question every sky-watcher actually has: what's in the sky tonight, when should I look, and is it even worth going outside? Open it and get a straight answer for exactly where you are: IS IT WORTH LOOKING UP TONIGHT? • A live Stargazing forecast — an honest Excellent / Good / Fair / Poor verdict and 0–100 score, from tonight's real cloud cover and the moon's brightness • Your best dark-sky window tonight, with real times ("clear and moonless 11:30pm–1am") • Sky Conditions now — temperature, cloud cover, and what the sky is doing WHAT'S UP, AND WHEN • Sunset, golden hour and blue hour — to the minute • The moon's phase, how lit it is, and tonight's moonrise & moonset • The next meteor shower peak • Aurora chance for your latitude, from NOAA's live Kp forecast • "The Sun's Path" — a live arc of the sun across the day YOUR AI SKY GUIDE A new Guide tab reads tonight's real conditions for your location and gives 2–3 short, specific tips: what to look for, the best window to go out, and a sunset/photo tip. It always works — even offline, it falls back to clear, data-based guidance computed on your device. AI is optional and off until you turn it on. Sky conditions use the free Open-Meteo and NOAA space-weather services; sun, moon and the stargazing forecast are computed on your device and work offline. No account, no sign-up, no tracking. KEEP WHAT YOU SAW Log a sunset, the full moon, an aurora, or a passing bird in seconds — with a photo and a note. Your year rolls up into a "Year in the Sky" recap to look back on and share. BUILT FOR YOUR PHONE • Home Screen and Lock Screen widgets with tonight's moon and golden hour • Ask Siri or use Shortcuts: "What's in the sky tonight?" • Full Dynamic Type, dark mode, and accessibility support Skyfield is free, has no ads, and asks for nothing. Just look up.
ClearNight
This app provides a simple, plain-language forecast for sky conditions, indicating when the weather is suitable for stargazing or outdoor night activities. It helps users decide if the sky is clear and dark enough for their plans.
- Sky condition forecast
- Cloud cover and moon phase
- Darkness level prediction
- Favorite spot saving
- At-a-glance verdict
- Optional clearing alerts
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Know the sky before you go outside. ClearNight tells you when the sky is actually worth looking at — clear enough, dark enough, tonight or this weekend. Built for campers, families planning a night under the stars, and anyone who's ever stepped outside and wondered if it was worth it. Get a plain-language read on your exact spot: cloud cover, moon phase, and how dark it'll really get — not just weather, but sky weather. • Save your favorite camping and stargazing spots • See tonight's verdict at a glance — go, wait, or don't bother • Optional alerts when the sky clears up near you • Works for backyard glances and weekend trips alike The sky doesn't announce itself. ClearNight does.
Screenshots
Verdict
The clearest difference is in-app purchases: Skyfield at none against ClearNight's 3. ClearNight's advantage is iOS requirement (15.1 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. ClearNight sells 3 in-app purchases, starting at $1.99 per month. Skyfield asks for nothing beyond the download.
| Parameter | Skyfield | ClearNight |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (7 ratings) — better |
| Number of ratings | — | 7 — better |
| Update frequency | — | Every 2 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 13 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Maksym Romanenko | Strange Glyph, LLC |
In-app purchases
Skyfield
No in-app purchases
ClearNight
- Monthly7 Days trial$1.991 Month
- Annual7 Days trial$12.991 Year
- Lifetime$29.99









