Comparison

Space Telescope App vs RiSet Sky

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Space Telescope App

Explore the universe with real-time updates and stunning visuals from NASA's James Webb Space Telescope. Engage with expert insights, join community discussions, and test your knowledge with interactive quizzes. Discover distant galaxies and unlock the secrets of the early universe.

Highlights
  • Live mission updates
  • Breathtaking image gallery
  • Expert Q&A with astronomers
  • Community discussions
  • Interactive space quizzes
  • 3D solar system explorer
  • Exclusive wallpapers
Features
Read full description

Space Telescope is an astronomy app for people who actually go outside and look up. See what the James Webb Space Telescope is observing right now. Decide whether tonight is worth staying out for. Catch the next visible ISS pass over your own location, and follow the rocket launches coming up. WHAT WEBB IS LOOKING AT, RIGHT NOW Webb's current target, science category, proposal, instruments and scheduled times, refreshed every five minutes while the view is open. Tap through to the proposal or the full observation schedule. A REAL PLAN FOR METEOR NIGHT Most meteor apps hand you a peak date. This one tells you what you will actually see. Set your location and how dark your sky is, and get an honest meteors-per-hour range, the best viewing window, where to look, how much the Moon will wash out, and what 30, 60 or 90 minutes outside is likely to be worth. Two alerts that matter: a heads-up the evening before, and a nudge when your window opens. Cloud cover is not included, so check the weather before you commit. THE ISS, OVER YOUR HOUSE Live position, altitude, velocity and orbit, plus crew, expeditions, dockings and visiting vehicles. Seven days of passes for your location with quality, direction, peak elevation and duration - set a 10-minute alert or drop the pass straight into your calendar. LAUNCH DAY Upcoming launches with live countdowns, status, provider, rocket, pad, launch window and webcast link. One tap for a reminder 15 minutes before liftoff. GALLERIES WORTH SCROLLING Imagery and mission guides for James Webb, Hubble, Chandra, the Nancy Grace Roman Space Telescope, Artemis, Mars and the ISS. Follow Roman's countdown, instruments and journey to L2. Pinch to zoom, save, share, like and comment. Turn on alerts only for the galleries you care about. PICTURE OF THE DAY NASA's Astronomy Picture of the Day, image or video, with the full expert explanation and an optional daily alert. AND WHEN YOU WANT MORE - Tonight Sky: sunrise, sunset, Moon phase, illumination and twilight - Space Weather: Kp index, solar wind, aurora probability and active alerts - Cosmic Calendar: meteor showers, eclipses and other sky events - Exoplanets: discovery method and year, distance, orbit, mass, radius, temperature, host star and habitable-zone marker - Community astrophotography: post your own shots with gear and conditions - Space wallpapers for your phone - Quizzes, points, levels and global leaderboards - Ask an Astronomer, and live chat rooms in 10 languages - Full interface in English and Spanish PREMIUM Space Telescope is free, with ads. Premium removes every ad, unlocks the premium wallpaper collection and adds a gold avatar ring. Choose a monthly or annual subscription, or pay once for lifetime access, which also grants 1,000,000 points and Diamond level straight away. Subscriptions are charged to your Apple Account and renew automatically unless auto-renew is turned off at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings. Whether you follow Webb every day, plan a Perseids or Geminids watch, photograph the night sky, teach astronomy, or just want to know when the ISS will cross overhead, Space Telescope keeps the useful details in one place. Space Telescope is an independent astronomy app and is not affiliated with or endorsed by NASA, ESA, STScI, SpaceX or any launch provider. Data and imagery are credited to their respective sources. Privacy policy: https://jameswebbtracker.com/privacy-policy Terms of use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

RiSet Sky

Features
Read full description

RiSet Sky: Essential sky information at a glance, right when you need it. Created by a professional astronomy educator for amateur astronomers, astronomy communicators, and curious observers, RiSet Sky puts the essential information about our celestial neighborhood and the International Space Station right at your fingertips. Know when the Sun, Moon, and planets rise, set, and transit, with information for both the date you are observing and the following day. Quickly see an object's current constellation location, apparent magnitude, angular size, and transit altitude, all in a clear, concise format designed for real-world observing. Explore Our Celestial Neighborhood Select the Sun, Moon, or any planet for a detailed observing profile. For Jupiter and Saturn, RiSet Sky shows the relative positions of their brighter moons, helping you know what to expect before you begin observing through an eyepiece. Select the Moon for additional information including its current phase, illumination percentage, rise and set times, angular size, as well as the date for upcoming Full and New Moons. For the Sun, RiSet Sky also provides a daily assessment of solar activity. Track the International Space Station RiSet Sky makes ISS observing simple. See upcoming rise and set times, visible duration, and future passovers. When an ISS opportunity is approaching, a single tap activates an observing aid that helps you determine where to look in the sky, accompanied by a convenient countdown timer. Built for Observers and Educators RiSet Sky was created around the things astronomers consider and the questions they hear from others: When can I see it? Where will it be? How high will it get? How bright is it? What should I expect to see? Whether you are planning an observing session, preparing an astronomy program, working with the public, or simply curious about the objects closest to us in space, RiSet Sky brings the essential information together in one clear, concise observing companion. Less time searching. More time looking up. RiSet Sky — Rise. Set. Observe.

Screenshots

Space Telescope App4 screens
RiSet Sky4 screens

Verdict

The call

The clearest difference is price: Space Telescope App at Free against RiSet Sky's $1.99. Space Telescope App also leads on iOS requirement (15.0 vs 18.0). RiSet Sky's advantage is in-app purchases (none vs 4) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

Space Telescope App is free to download; RiSet Sky costs $1.99 up front. Space Telescope App sells 4 in-app purchases, starting at $4.99 per month. RiSet Sky asks for nothing beyond the download.

Scorecard4 real differences · 6 level
Space Telescope App versus RiSet Sky: the parameters behind the verdict, then further details
ParameterSpace Telescope AppRiSet Sky
PriceFree — better$1.99
Rating4.0 (30 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings30 — better—
Update frequencyEvery 10 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size104 MB9 MB
Age rating4+4+
DeveloperKAKHA GIORGASHVILIMICHAEL K D SIBBERNSEN

In-app purchases

4 purchases

Space Telescope App

Subscriptions2
  • Monthly Ad-Free Plan$4.991 Month
  • Ad-Free Annual Access$29.991 Year
One-time2
  • Premium$2.99
  • Buy 1M Points$99.99
None

RiSet Sky

No in-app purchases

Questions

Is Space Telescope App free?
Space Telescope App is free to download, with in-app purchases available.
Is RiSet Sky free?
RiSet Sky costs $1.99, with no in-app purchases.
Do Space Telescope App or RiSet Sky have ads?
Space Telescope App shows ads; RiSet Sky does not.

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