Comparison

Seestar vs FlySpanker Blink Comparator

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

FlySpanker Blink Comparator

Features
Read full description

Science-inspired fun! The FlySpanker Blink Comparator brings classic astronomical "plate blinking” techniques to your iPhone. With this App, you can easily upload two photos taken of the same scene, preferably in quick succession, and align them with each other. When blinking between the aligned images, any foreground differences are highlighted, typically to comic effect. For example, we typically allow our children to take "silly" pictures as long as they are able to take a "serious" one first; the Blink Comparator will make an animated image of these two pictures to highlight the differences. After image registration, the App will save an animated image to your photos. You can choose between slow and fast blinking. The registration effect works best with minor changes (offset and rotation) to the background scene. Fun Facts: In early Astronomy, the "fly-spanker" was a glass plate with reference dots of known stellar brightness, allowing Astronomers to compare them to stars on photographic images in order to standardize measurements and identify changes in brightness. The name comes from its resemblance to a fly-swatter, but it was considered too small to do a fly much damage. A "blink comparator" was a device that allowed Astronomers to toggle rapidly between two photographic plates, in order to uncover differences visually. Notably, use of this technique led to the discovery of the planet Pluto in 1930.

Screenshots

Seestar4 screens
FlySpanker Blink Comparator1 screens

Verdict

The call

The clearest difference is price: Seestar at Free against FlySpanker Blink Comparator's $0.99. Seestar also leads on iOS requirement (13.0 vs 17.6). FlySpanker Blink Comparator's advantage is update cadence (daily vs monthly) and chart position (#119 vs unranked). On ads, in-app purchases 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

Seestar is free to download; FlySpanker Blink Comparator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Seestar ships an update monthly, FlySpanker Blink Comparator daily. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 7 level
Seestar versus FlySpanker Blink Comparator: the parameters behind the verdict, then further details
ParameterSeestarFlySpanker Blink Comparator
PriceFree — better$0.99
Rating4.2 (354 ratings) — better—
Positive reviews62.0% of reviews—
Number of ratings354 — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank—#119 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size1.3 GB3 MB
Age rating4+4+
DeveloperSuZhou ZWO Co., LtdANDREW CAMERON BECKER

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

FlySpanker Blink Comparator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seestar

No in-app purchases

None

FlySpanker Blink Comparator

No in-app purchases

Questions

Is Seestar free?
Seestar is free to download, with no in-app purchases.
Is FlySpanker Blink Comparator free?
FlySpanker Blink Comparator costs $0.99, with no in-app purchases.
Do Seestar or FlySpanker Blink Comparator have ads?
Neither Seestar nor FlySpanker Blink Comparator shows ads.
Which is updated more often, Seestar or FlySpanker Blink Comparator?
Seestar ships an update monthly, and FlySpanker Blink Comparator daily. Most recently, Seestar was updated on October 26, 2026 and FlySpanker Blink Comparator on October 28, 2026.

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