Comparison

StoneBusters vs My Sky

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

Head to head
About

StoneBusters

Features
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On the mobile screen, users can access data from the Minor Planet Center, such as the NEO Confirmation Page (NEOCP) and the Possible Comet Confirmation Page (PCCP). A list of recently observed NEOs, organized by classification: unnumbered single-opposition, multiple-opposition, and numbered objects. Object from NEOfixer (University of Arizona) may be visualized, filtered and sorted. A personalized “starred” list let the user to have a list of preferred objects available for quick view and a custom list of selected objects, based on various physical and observational parameters may also be listed. Additionally, a list of objects that were removed from the NEOCP is available, with each object graphically categorized by its final classification (e.g., NEO, comet, artificial object, missing object, etc.). Once an object is selected, the app provides detailed information, including: an observation summary (observatory codes and details), Ephemeris calculation, Orbital elements and uncertainty orbit graphic representation for NEO. Users can also "identify" an object displaying physical and orbital data retrieved from NASA JPL's Solar System Dynamics (SSD) database. This includes secondary designations, discovery circumstances, and citation text (if available). There is also the possibility to “WAMO” an object with personal MPC observatory code to obtain the status of observation, and also have Summary WAMO data visualized as bar histograms and tables. As a curiosity—and to assist users without an observatory code—if location permissions are enabled, the app can list the 30 nearest observatory codes based on distance from the user's device. (For security reasons, the exact coordinates or map positions of the observatories are not displayed, and never will be.) The app relies on APIs provided by: - The International Astronomical Union's Minor Planet Center - NASA Jet Propulsion Laboratory's SSD and CNEOS (Center for Near-Earth Object Studies) - NEOfixer (University of Arizona) Some calculations, such as topocentric ephemerides, are performed directly on the device. While the app provides convenient, on-the-fly previews of information, users are strongly encouraged to refer to the official sources mentioned above for authoritative and professionally calculated data.

About

My Sky

Features
Read full description

My Sky is a personal astronomy star map for deep-sky observers. Photograph a nebula, galaxy, star cluster, or planet, then pin it onto a live night-sky chart where it belongs. Browse a private deep-sky album, search stars and deep-sky objects, and set your observing site so the map matches tonight’s sky. • Interactive star map with constellations and coordinate grid • Pin your own nebula, galaxy, and planet photos to the sky • Private album for deep-sky and solar-system images • Search stars, planets, Messier objects, and other DSOs • Region and language settings • Optional watermark when you save No account required. Your astronomy photos stay on your device.

Screenshots

StoneBusters4 screens
My Sky4 screens

Verdict

The call

The clearest difference is in-app purchases: StoneBusters at none against My Sky's 1. StoneBusters also leads on update cadence (every 2 weeks vs every 5 months) and device support (4 vs 1). On price, ads and iOS requirement 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. My Sky sells 1 one-off in-app purchase. StoneBusters asks for nothing beyond the download.

UpkeepUpdate frequency

StoneBusters ships an update every 2 weeks, My Sky every 5 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 3 level
StoneBusters versus My Sky: the parameters behind the verdict, then further details
ParameterStoneBustersMy Sky
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size55 MB58 MB
Age rating4+4+
DeveloperFABRIZIO TOZZI哲 洪

In-app purchases

None

StoneBusters

No in-app purchases

1 purchases

My Sky

One-time1
  • Donate to the Developer$0.99

Questions

Is StoneBusters free?
StoneBusters is free to download, with no in-app purchases.
Is My Sky free?
My Sky is free to download, with in-app purchases available.
Do StoneBusters or My Sky have ads?
Neither StoneBusters nor My Sky shows ads.
Which is updated more often, StoneBusters or My Sky?
StoneBusters ships an update every 2 weeks, and My Sky every 5 months. Most recently, StoneBusters was updated on September 17, 2026 and My Sky on September 10, 2026.

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