Moniro vs Space Arc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Moniro
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Book clubs bring people together to share ideas, spark meaningful discussions, and deepen their love for reading. Our app creates the perfect space for readers to connect, exchange insights, and explore diverse perspectives—whether in person or online. By fostering engaging conversations, we encourage critical thinking, personal growth, and a more connected literary community. Join today and take your book club experience to the next level!
Space Arc
Explore celestial events with real-time data from NASA and other space agencies. Track satellites, view stunning astronomy pictures, and get personalized alerts for meteor showers, eclipses, and aurora.
- Real-time satellite tracking
- NASA Picture of the Day
- Global launch calendar
- Celestial events calendar
- Aurora alerts
- Smart notifications
- Offline event caching
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Space Arc tells you what's worth stepping outside for tonight — when to go, where to look, and whether the clouds will cooperate. Meteor showers, planets, the ISS, Starlink trains, eclipses, the aurora, full Moons and rocket launches, all worked out for your exact location, with a weather-based Sky Score so you only head out when it's worth it. TONIGHT'S PLAN A simple timeline for tonight: sunset, full darkness, moonrise and moonset, each planet at its best, and every event you can actually see. A "Now" marker shows what's up right now. FIND IT IN THE SKY • AR Sky Finder — hold up your phone and follow the arrow until the target is in the circle. Works for planets, the Moon, meteor-shower radiants and satellites. • Where Do I Look? — a compass guide with the direction and height above the horizon. • Live Track — follow the International Space Station in real time, with a countdown to its next visible pass. EVENTS THAT FIT YOUR NIGHT • Meteor showers — the best hours of the peak night where you are, with realistic hourly rates that account for the radiant's height, twilight and moonlight. • Planets — oppositions, the best evenings and mornings for Mercury and Venus, and a live "Tonight's Sky" card with rise and set times. • Moon — full Moons, supermoons, blue moons and moonless Dark Sky Windows. • Eclipses — whether you'll see each solar and lunar eclipse from your location, and how much of the Sun will be covered. • Satellites — ISS flyovers, Hubble and Tiangong passes, and "Starlink trains" right after launches. • Aurora — NOAA geomagnetic storm alerts, shown only when it's dark and the storm can reach your latitude. • Space weather, rocket launches and near-Earth asteroid flybys. KNOW BEFORE YOU GO • Sky Score — Apple Weather cloud forecasts for the clearest dark hour of each viewing window. • Clear-sky alerts — one optional heads-up before sunset when something special is up and the forecast looks clear. • Reminders and Calendar — get notified before an event or add it to your calendar. Reminders update automatically if a launch is rescheduled. • Home Screen widget — tonight's best event and its Sky Score at a glance. YOUR OBSERVING LOG Tap "I saw it" to save sightings with notes and photos. Earn badges like Meteor Hunter, Station Spotter and Planet Collector, keep a weekly streak, and share good-looking cards of what you saw. EVERY DAY NASA's Astronomy Picture of the Day and the latest image from the Hubble Space Telescope. ACCURATE AND PRIVATE Sky positions, twilight, Moon phases, planet events, meteor peaks and satellite orbits are calculated on your phone using established astronomical methods and NASA/NORAD orbital data. Your observing log and photos stay on your device. Data from NASA (APOD, DONKI, NeoWs, JPL Horizons), NOAA Space Weather Prediction Center, Launch Library 2, CelesTrak, N2YO, ESA/Hubble and Apple Weather.
Screenshots
Verdict
The clearest difference is in-app purchases: Space Arc at none against Moniro's 2. Moniro's advantage is update cadence (fortnightly vs monthly) and device support (3 vs 1). On price and ads 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. Moniro sells 2 in-app purchases, starting at $2.99 per month. Space Arc asks for nothing beyond the download.
Moniro ships an update fortnightly, Space Arc monthly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.
| Parameter | Moniro | Space Arc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Fortnightly — better | Monthly |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 122 MB | 8 MB |
| Age rating | 17+ | 4+ |
| Developer | ASQARI BROTHERS AB | Marc L. Melcher |
In-app purchases
Moniro
- Monthly Premium$2.991 Month
- Premium Yearly$29.991 Year
Space Arc
No in-app purchases









