Comparison

Seestar vs AstroFITS

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

Head to head
About

Seestar

Explore the universe with a smart telescope that simplifies stargazing. Automatically find, focus, and capture celestial objects without professional guidance. Observe stars, the sun, and even landscapes with intuitive app control.

Highlights
  • Wireless control of telescope
  • Automatic celestial object finding and tracking
  • Solar observation with filter
  • Scenery mode for terrestrial viewing
  • Built-in sky atlas and encyclopedia
  • Stargazing index and recommendations
  • Share observations with community
Features
Read full description

Take the first step in exploring the universe! The Seestar smart telescope will give you a stargazing experience like never before. No need for professional guidance, just tap on the screen and you are ready to observe and capture the stars. Seestar is a smart device that integrates the functions of an altazimuth mount, telescope, and camera, with both hardware and software applications. With the Seestar App, you can easily control this multifunctional device and explore the infinite world of stars. Key features: - Wireless control: Control with Seestar device through wireless connection. - Stargazing Mode: Automatically find and focus on celestial objects, intelligently identify stars and track them for automatic capturing and image processing. - Solar Mode: Support auto-scan and solar tracking. Use the included Solar Filter to observe the unique sun. - Scenery mode: Manually control the telescope direction and auto-focus, so you can enjoy observing birds and landscapes. -Sky Atlas: Built-in curated celestial object database AND a rich astronomical knowledge encyclopedia,help you easily understand the mystery of starry sky. - Stargazing Index forecasts and popular Recommendations: Stay updated with popular information, making you an expert in astronomical events. - Share Your Work in the Square: Engage and exchange insights with astronomy enthusiasts from around the world, showcasing your observational achievements. - Adaptation Model: It will work with all Seestar models. Seestar is your ideal companion for exploring the universe, observing the stars and sharing experiences. Download Seestar App now and Explore the universe with Seestar.

About

AstroFITS

This app allows users to quickly open and view FITS files on iOS devices using GPU acceleration. It features automatic image stretching and supports various color formats and bit depths, making astronomical image analysis more accessible.

Highlights
  • Open FITS files quickly on iOS
  • GPU accelerated image processing
  • Automatic image stretching
  • Supports RGB and gray color
  • Handles multiple BITPIX formats
  • Save adjusted images to Photos
Features
Read full description

A simple app to open FITS file in iOS quickly using GPU. It has an auto-stretch feature. And works on FITS file with RGB or gray color. It handles BITPIX of 8,16,32,-32 and -64. It is designed and tested for Seetar FITS file. It takes about 2 seconds to open and automatically stretch a 50mb FITS file. Sample links are provided below. Enjoy! Use: 1. Download your FITS file to your phone File directory. 2. Tap Image icon on the first top left. 3. Select your FITS file. 4. It will auto stretch. 5. Adjust the image level. 6. Adjust the image curve. 7. Tap the second top icon to save image to Photo. If you encounter an issue, please email to ustrainsit74@gmail.com with your FITS file as attachment. Sample: Below are some FITS files for download. - https://drive.google.com/file/d/1Li8f1QH1u1R6U8RKZZ0kwW9LZ4cHCaXz/view?usp=share_link - https://drive.google.com/file/d/1MVuW1oa7qAjbfdl_iGUI-q7knE2ij67v/view?usp=share_link - https://drive.google.com/file/d/1TE70gdDK3XmLx9-iB43I-uh6INq8FCaO/view?usp=share_link Privacy policy and term of use (EULA) is at https://deepskycolor.blogspot.com/2018/12/privacy-policy-for-deep-sky-color-app.html

Screenshots

Seestar4 screens
AstroFITS3 screens

Verdict

The call

The clearest difference is rating: Seestar at 4.2 against AstroFITS's 2.0. Seestar also leads on in-app purchases (none vs 1) and ratings volume (334 vs 1). On price, update cadence, ads and 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

Both are free to download. AstroFITS sells 1 in-app purchase, starting at $0.99 per year. Seestar asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Seestar holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Seestar has 334 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
Seestar versus AstroFITS: the parameters behind the verdict, then further details
ParameterSeestarAstroFITS
PriceFreeFree
Rating4.2 (334 ratings) — better2.0 (1 ratings)
Positive reviews61.7% of reviews—
Number of ratings334 — better1
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size1.3 GB61 MB
Age rating4+4+
DeveloperSuZhou ZWO Co., Ltdyong chong loh

Customer experience

Seestar

All ratings334 ratings
Positive79.9%
Neutral3.9%
Negative16.2%
Written reviews175 reviews
Positive61.7%
Neutral8.0%
Negative30.3%

AstroFITS

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Seestar

Reported bugs

5 issues
  • Firmware update cycle preventing settings changes
  • Tracking errors and star trailing issues
  • App crashing on startup
  • Inability to connect to telescope
  • Forced firmware updates during use

Requested features

5 requests
  • Add equatorial mode support
  • Provide fine control of exposure time
  • Implement mosaic mode for wider FOV
  • Add support for iPad landscape mode
  • Integrate with other astronomy apps

AstroFITS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seestar

No in-app purchases

1 purchases

AstroFITS

Subscriptions1
  • Yearly Subscription$0.991 Year

Questions

Is Seestar free?
Seestar is free to download, with no in-app purchases.
Is AstroFITS free?
AstroFITS is free to download, with in-app purchases available.
Which has better reviews, Seestar or AstroFITS?
Seestar is rated higher. Seestar averages 4.2 out of 5 from 334 ratings, while AstroFITS averages 2.0 from 1 ratings.
Do Seestar or AstroFITS have ads?
Neither Seestar nor AstroFITS shows ads.
Which is updated more often, Seestar or AstroFITS?
Seestar ships an update monthly, and AstroFITS monthly. Most recently, Seestar was updated on September 25, 2026 and AstroFITS on September 21, 2026.

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