JWST vs FredSky
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JWST
Follow the James Webb Space Telescope's current activities with real-time observation schedules and detailed insights. Explore past and future targets, access in-depth scientific data, and personalize your view with custom filters.
- Live observation tracking
- Past and future observation schedules
- Detailed scientific data access
- Powerful search functionality
- Customizable date and time filters
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What is JWST doing now? Experience the journey of humanity's most powerful space telescope with JWST Observation Live. Ever wondered what the James Webb Space Telescope (JWST) is looking at this very second? Our app brings the cosmos to your fingertips, providing a real-time window into the daily operations of NASA’s flagship observatory. Whether you are a professional astronomer, a student, or a space enthusiast, JWST Observation Live delivers the technical data and real-time insights you need to follow the discovery of our universe. Key Features: LIVE TRACKING: Stay updated with the current observation schedule. See exactly which galaxy, nebula, or star system JWST is targeting right now. PAST & FUTURE: Dive into the history of JWST’s observations or look ahead at what scientists have planned for the coming weeks. DETAILED RESEARCH: Access in-depth information about every observation, including scientific program IDs, instrument modes, and primary investigator details. POWERFUL SEARCH: Easily find specific targets or programs to learn about the science behind the imagery. CUSTOM FILTERS: Personalize your view by filtering schedules with specific date ranges and time zones (Local or UTC). Download now and join the mission to uncover the secrets of the cosmos!
FredSky
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FredSky turns your iPhone into a pocket planetarium. Look up, then at your phone, and instantly see what's overhead right now — the stars and constellations, the Moon and planets, and satellites passing over. The all-sky chart is centered on the zenith, like lying back and looking straight up, drawn for your exact location and moment. Raise your phone toward the sky and FredSky switches to a live camera view with the brightest objects labeled where you're aiming. Lower it, and you're back to the chart. • Live star chart — stars to naked-eye brightness, the classic constellation figures, the planets, the Moon at its true phase, and visible satellite passes. • Fully offline — the entire star catalog is built in, so the sky is right whether or not you have a signal. • Point-and-look — hold your phone up to identify the bright star or planet you're looking at. • Bird songs, too — tap record and FredSky identifies the bird singing nearby, then keeps your sightings as an illustrated life list. • Red night mode — a one-tap, dark-adapted view that protects your night vision outdoors. No account. No ads. No tracking. Just look up. Positions, phases, and pass times are computed properly — the numbers stay serious, even though the whole app is built to answer one question fast: what is that?
Screenshots
Verdict
The clearest difference is device support: JWST at 3 against FredSky's 1. JWST also leads on iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases 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.
| Parameter | JWST | FredSky |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 62 MB | 21 MB |
| Age rating | 9+ | 4+ |
| Developer | Alparslan Topbas | Frederick Duggan |
In-app purchases
JWST
No in-app purchases
FredSky
No in-app purchases









