Planet Finder vs Stargazer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planet Finder
Explore the night sky by pointing your device upwards. Identify planets, stars, and constellations in real-time with an augmented reality overlay. Access a comprehensive celestial catalog and receive personalized astronomical information.
- Real-time celestial object identification
- Augmented reality sky overlay
- Comprehensive star and constellation catalog
- Personalized astronomical information
- Event calendar with reminders
- Offline celestial computation
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Point your phone at the sky and Planet Finder tells you exactly what you are looking at. Planets, stars, constellations and deep sky objects, all worked out live for the precise spot you are standing on. No account, no sign up, no waiting. Ask PlatonAI anything! An astronomer built into the app. Ask anything about tonight and get an answer for your location and the hour you are asking, not a page from a textbook. It knows what has already set, what is still climbing and what the Moon is about to wash out. POINT AND FIND ANYTHING Lift your phone and a pointer walks you to any planet, star or constellation. The camera view is labelled with what is really above you. TONIGHT, AT A GLANCE Everything visible from where you are right now, with rise, transit and set times, and a plan for the moment the sky finally goes dark. A SKY MAP WITH REAL DEPTH Pinch to zoom and the map keeps going. At the deepest levels thousands of faint stars come out, the way they do through a telescope. The whole map turns with your compass. THE COMPLETE CATALOGUE All 88 constellations. 196 named stars. The full Messier catalogue of 110 galaxies, nebulae and star clusters. Real NASA photographs of the Sun, the Moon and every planet. The Milky Way drawn across your own sky. A CALENDAR THAT TELLS YOU WHEN Moon phases, meteor showers, conjunctions, eclipses, oppositions, greatest elongations and supermoons. Set a reminder, or add any event to your own calendar with one tap. SIX SKY GAMES Games built around the real night sky. One of them is free every single day. MADE FOR REAL NIGHTS OUTSIDE Red night mode protects your night vision. The astronomy is computed on the device, so it keeps working with no internet at all. PLANET FINDER PRO Pro opens PlatonAI, the entire catalogue, unlimited AR finds, the deep zoom, every game, red night mode, a best viewing card you can save and share, and the ability to pin your own photo onto any object in AR. Planet Finder offers an auto renewing subscription with a free daily allowance. Weekly, monthly and yearly plans are available, plus a one time Lifetime purchase. Payment is charged to your Apple ID and renews unless canceled at least 24 hours before the period ends. Cancel anytime in App Store settings. Privacy Policy: https://spinbo.net/planetfinder/privacy Terms of Use: https://spinbo.net/planetfinder/terms
Stargazer
Explore the night sky by pointing your device upwards. Identify planets, constellations, stars, and satellites. Features an AI assistant for astronomy questions and an augmented reality mode to visualize celestial bodies.
- Point-and-identify celestial objects
- AI-powered astronomy assistant
- Augmented reality solar system exploration
- Constellation artwork and facts
- Night photography planning
- Printable star charts
- Interactive sky quiz
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Point your phone at the sky, tap a star or planet, and explore what you are looking at. Stargazer brings a live sky map, observing tools and astronomy guides together in one app. TWIN SKY: NOW BESIDE LATER See two calculated skies for the same observing location, from 15 minutes to eight hours apart. Link direction and zoom for comparison, or explore each view independently. Weather, darkness and your horizon affect actual visibility. GUIDED OBSERVING SESSIONS Work through your saved targets with the sky visible. The guide prioritises targets becoming low sooner. Aim, skip or explicitly mark a target observed; aiming alone never logs an observation. NIGHTSTAND A large dimmable bedside clock over a quietly changing real-time sky. Landscape is the default: prop Duo with its hinge at the top, with clock and weather over the sky on the facing display. See Moon phase and available weather, switch to red night vision, and choose whether to keep the screen awake. The clock uses your device’s time zone. Weather needs an internet connection and includes its update time. AN OBSERVING DESK BESIDE YOUR SKY On iPhone Duo, iPad and other roomy windows, keep the sky visible beside your observing workspace. Browse targets, check their altitude and find them in the sky without covering the view. A compact observing desk is also available on ordinary iPhones. COMPARE TWO TARGETS Compare the altitude of two objects across the night, preview the sky at a chosen time and jump to each target’s highest point within the charted window. Charts use your device’s local time. Actual visibility also depends on weather, darkness and your horizon. PLAN YOUR NIGHT Keep a saved target checklist, mark what you have observed and write field notes about your equipment, conditions and discoveries. Plans and notes are saved locally on your device. A TABLETOP OBSERVATORY Use separate sky and control panes in tabletop mode. Native Duo fold handling follows the available window and reserved fold region, while your target and observing plan stay together as the layout changes. POINT, SEARCH AND EXPLORE Explore planets, the Moon, stars, constellations, deep-sky objects and satellites. Search by name, tap an object for details, save favourites or use guidance to locate it. Constellation artwork and adjustable sky layers help you read the sky. EXPLORE IN 3D AND AR Explore the solar system, planets and moons in 3D. Supported iPhones and iPads also offer AR views. Discover lunar features and landing sites, and see how Moon phases work. NOVA YOUR ASTRONOMY GUIDE Ask about objects and astronomy. Compatible devices use Apple’s on-device models when available; built-in local answers remain available otherwise. A kids mode uses simpler explanations. MORE FOR YOUR NEXT NIGHT OUT • Tonight’s overview, meteor showers and satellite passes • Time travel through the sky • Night photography planning • Stargazing conditions and dark-sky tools • Printable star charts and shareable cards • A sky quiz and astronomy facts • Red night-vision mode • Home-screen widgets No account is required. Location helps calculate your sky. Optional weather, maps and online imagery use their respective services; attribution and data information are available in the app.
Screenshots
Verdict
The clearest difference is review sentiment: Stargazer at 100% against Planet Finder's 0%. Stargazer also leads on in-app purchases (none vs 5) and ads (none vs shown). Planet Finder's advantage is rating (4.0 vs 3.0) and iOS requirement (18.6 vs 26.0). On price, ratings volume and update cadence 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. Planet Finder sells 5 in-app purchases, starting at $5.99 per 7 days. Stargazer asks for nothing beyond the download.
Planet Finder holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews complicate that: 0% of Planet Finder's written reviews are positive against 100% of Stargazer's, so the app with the better star average is not the one people write more warmly about.
Planet Finder ships an update every 5 days, Stargazer weekly. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.
| Parameter | Planet Finder | Stargazer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 18.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 65 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | SEMPEAK INTERNET REKLAM BILISIM ANONIM SIRKETI | Kendal Slack |
Customer experience
Planet Finder
Stargazer
In-app purchases
Planet Finder
- Pro Weekly$5.997 Days
- Pro Monthly$14.991 Month
- Pro Yearly Special$29.991 Year
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- Pro Yearly$59.991 Year
- Pro Lifetime$69.00
Stargazer
No in-app purchases
Questions
Is Planet Finder free?
Is Stargazer free?
Which has better reviews, Planet Finder or Stargazer?
Do Planet Finder or Stargazer have ads?
Which is updated more often, Planet Finder or Stargazer?
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