Astrospheric vs ITMO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astrospheric
This app offers advanced weather forecasting and astronomical data for stargazers and astrophotographers. It provides detailed hourly forecasts, cloud and sky transparency reports, and alerts for celestial events. It also includes tools for astronomical societies and offline site setup.
- 84-hour hourly weather forecast
- Ensemble cloud forecast
- Kp index for Aurora
- ISS flyover paths
- Integrated smoke forecast
- Sky and ground data
- Rise and set times
- Solar and Lunar eclipse data
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Astrospheric provides advanced weather tools for professional astronomers and astrophotographers, and supports hundreds of astronomical societies with tools that help members stay connected. Are you using what the pros use? Features • 84 hour, hour-by-hour forecast • Free notification reminders for major astronomical events, customized for your location • Ensemble cloud forecast lets you quickly compare the major forecast models with hourly updates (Astrospheric Pro) • Extended cloud forecast • Kp index for Aurora viewing (and alerts with Pro) • International Space Station (ISS) flyover paths and times • Astrospheric is the only astronomy service that integrates the smoke forecast into the transparency report • Sky data: cloud, sky transparency, seeing • Ground data: wind, temperature, and humidity • Precise rise and set times for both the sun and moon • Get weather alerts when conditions meeting your requirements are met (Astrospheric Pro) • Details Solar and Lunar eclipse data Astronomical Societies • Stay connected with chat, image sharing, and event planning with all of your members. • Qualifying astronomical societies can get Pro features for all of their members Site Mode • Information necessary to quickly set up your GOTO tracking mount • Available even if you don’t have a network connection Astrospheric Professional is now available to enable Weather Alerts, Ensemble cloud forecast, and more! • Astrospheric Professional is billed monthly or yearly and will auto-renew unless turned off at least 24-hours before the end of the current subscription period. The renewal cost will be the same as the initial sign-up cost of the subscription. Any changes in cost will be communicated before renewal takes place. • Payment will be charged to iTunes Account at confirmation of purchase • Subscriptions may be managed by you and auto-renewal may be turned off by going to the your Account Settings after purchase. A link to these settings is made available within Astrospheric "My Profile" for easy access. • The terms of use and privacy policy may be found at https://www.astrospheric.com/privacypolicy.php, purchasing a subscription shows agreement to these terms. PLEASE NOTE: Weather data is not available for Hawaii due to the domain area covered by the Canadian Meteorological Center. However, satellite and light pollution map layers, as well as other features will work in Hawaii. More information on Astrospherics forecast domain can be found here: https://www.astrospheric.com/dynamiccontent/datadomain.html
ITMO
This app provides real-time visibility reports for Mount Rainier, compiled from local user submissions. See if the mountain is out before you go, share your own sightings, and track recent photos and webcam views.
- Real-time mountain visibility reports
- Submit your own sightings
- View recent photos and webcams
- Live reporting map
- Leaderboard with virtual tokens
- Anonymized location data
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Know if The Mountain is out before you head out. ITMO turns live neighbor reports into a clear, local read on whether Mount Rainier (known by more than 20 Indigenous names across the region's tribes, including Tahoma and Tacoma, "the mother of waters") is visible right now. One glance answers the question every Puget Sound local asks. What you can do • See the current verdict on The Mountain • Call it out in one tap when you catch a clear view • Watch the live map light up as reports roll in • Check recent photos and webcam views before you head out • Share a clean report card to your socials • Climb the leaderboard and earn Tahoma Tokens for every sighting Private by design Every report is anonymized to a ~300m hex on an H3 grid. You share the view, never your exact location. Built for the PNW Made for slow mornings, last-minute plans, and everyone around Seattle and Tacoma waiting for a clear horizon. Free to join.
Screenshots
Verdict
The clearest difference is ratings volume: Astrospheric at 482 against ITMO's 8. Astrospheric also leads on chart position (#86 vs unranked) and device support (3 vs 1). ITMO's advantage is update cadence (every 5 days vs every 2 weeks) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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. Astrospheric sells 2 in-app purchases, starting at $2.99 per month and ITMO sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
ITMO holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Astrospheric has 482 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 87% of Astrospheric's written reviews are positive against 100% of ITMO's.
Astrospheric ships an update every 2 weeks, ITMO every 5 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Astrospheric | ITMO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (482 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 86.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 482 — better | 8 |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Best chart rank | #86 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 39 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Fiordalis | Rainier Watch LLC |
Customer experience
Astrospheric
ITMO
Bugs and requests
Astrospheric
Reported bugs
2 issues- App crashing or not loading on some devices
- Inconsistent temperature and wind data
Requested features
4 requests- Notification system for clear skies
- Widgets for quick access to data
- More detailed transparency and seeing data
- Ability to flip east and west in the app
ITMO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Astrospheric
- Astrospheric Pro Subscription7 Days trial$2.991 Month
- Astrospheric Pro Subscription7 Days trial$29.991 Year
ITMO
- Super Watcher Club Weekly3 Days trial$1.997 Days
- Super Watcher Club Monthly7 Days trial$4.991 Month
- Super Watchers Club14 Days trial$29.991 Year








