StarLens: Star & Planet Finder
Name the stars you point at
Only for iPhone
Free
iPhone
Hold your iPhone up to the night sky and StarLens places the names right on the real stars. No connection needed — it works even at remote dark-sky sites.
"What's that bright star?"
Hold your iPhone up to the night sky and StarLens will tell you.
StarLens reads the pattern of the real stars your camera sees to work out exactly where you're looking — so star and constellation names land right on the stars on your screen.
WHAT YOU CAN DO
• See the names of stars, constellations, planets and the Moon over the live camera view
• Tap a name for a simple explanation of what it is
• Pick the Moon or a planet from "Tonight's sky" and an arrow guides you to it
• Horizon and compass directions, planet rise/set times, star colors and distances
• Take a photo of the sky with the names on it and share it with friends
• Red night mode that protects your dark-adapted eyes
• Works completely offline — perfect for remote dark-sky sites with no signal
• Demo mode to try it indoors or in daylight
• 15 languages, including English, Japanese, Chinese, Korean, German, French, Spanish and Portuguese
GREAT FOR
• Finding out what you're looking at under a starry sky
• Exploring the constellations with family and friends
• Showing the sky to newcomers at star parties
FOR ENTHUSIASTS
StarLens plate-solves every frame against a catalog of about 5,000 stars, so labels never drift the way compass-only sky apps do. The catalog and solver are built in and need no internet connection, so it works just the same at a remote observing site with no signal. It also has a star-field auto-exposure, gyro-stabilized tracking, and an optional technical readout (coordinates, exposure, matched stars).
PRIVACY
Camera images and your location are processed only on your iPhone and never sent anywhere. No account, no ads.
TIPS
• The less city light and moonlight, the more stars it recognizes
• Hold still for a moment to catch fainter stars
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- When stars are hard to see (daytime, twilight, haze), StarLens can now find directions from the Moon or the Sun (the Sun is not available in some regions)
- StarLens now tells you when the compass is being thrown off, for example by steel-framed buildings or magnetic cases
- Lit wires, satellites and aircraft are less likely to be mistaken for stars
- Names stay closer to their stars while you move your iPhone
- Fixed brightness that could keep changing on a tripod or on some iPhone models
- Bug fixes and stability improvements
The developer, Masakazu Yamada, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Masakazu Yamada
- Size
- 2.3 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
English and 14 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Real Starry