Comparison

Astro Skies vs Deep Sky Scanner

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

Head to head
About

Astro Skies

Plan your stargazing sessions with this astronomy app. It provides real-time observing conditions, weather forecasts, lunar information, and visible celestial objects to help you make the most of your nights under the stars.

Highlights
  • Observing score based on sky and weather
  • Detailed weather and seeing conditions
  • Moon phase and astronomical darkness
  • Visible objects and astronomical events
  • Red vision mode for night use
  • Camera-based sky pointer
Features
Read full description

Astro Skies is a mobile astronomy app designed to help observers, astrophotographers and sky lovers plan better nights under the stars. The app brings together observing conditions, sky quality, Moon information, astronomical darkness, weather forecasts, astronomical events, comets, visible objects, transient alerts and red vision mode in a simple mobile dashboard. With Astro Skies you can quickly check if the night is suitable for observation, explore what objects are visible from your location, review lunar conditions, follow relevant sky events and use tools designed for nighttime observing. Main features: • Observing score based on sky and weather conditions • Seeing, transparency, cloudiness, humidity, wind and temperature • Moon phase and astronomical darkness • Best observing window • Astronomical events and comets • Visible objects for the night • Red vision mode for night use • Camera-based sky pointer • Multilanguage support Astro Skies is built for amateur astronomers, astrophotographers and anyone who wants a quick way to plan a better observing night. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Deep Sky Scanner

Features
Read full description

Point your phone at the sky and know instantly what’s worth imaging. Deep Sky Scanner turns your device into an aiming tool for the Seestar S50, scanning your field of view and ranking every galaxy, cluster, and nebula by altitude, brightness, and how well it’ll actually fit your frame. No more guessing what’s up, no star-hopping, no wasted setup time on a target that’s too big or too faint for tonight’s sky. FEATURES • Live sky scan — see every object in view as you move your phone, tracked with full 3D orientation for steady accuracy even near the zenith • Ranked target lists — sorted by altitude trajectory, brightness, or best overall fit for your Seestar S50 • Frame-fit scoring — know before you start whether an object will actually fit the frame, not spill past the edges • Ascending/descending badges — see whether a target is climbing toward better altitude or already past its peak • Planning mode — drag the time slider to preview the sky at any hour and plan your session in advance • Per-object imaging notes — integration-time guidance by magnitude, edge-on galaxy detection, and nearby-companion flags • Full OpenNGC catalog with offline fallback — works even without a signal • Additional catalogs are available and can be optionally selected on the settings page • Supports the Seestar family of telescopes Built by a Seestar owner, for Seestar owners.

Screenshots

Astro Skies4 screens
Deep Sky Scanner3 screens

Verdict

The call

The clearest difference is ads: Deep Sky Scanner at none against Astro Skies's shown. Deep Sky Scanner also leads on update cadence (every 4 days vs every 3 weeks). On price, in-app purchases, device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Astro Skies ships an update every 3 weeks, Deep Sky Scanner every 4 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
Astro Skies versus Deep Sky Scanner: the parameters behind the verdict, then further details
ParameterAstro SkiesDeep Sky Scanner
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 4 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size47 MB2 MB
Age rating4+4+
DeveloperDAVID ANDRES FERNANDEZ PEREZChris Eddy

In-app purchases

None

Astro Skies

No in-app purchases

None

Deep Sky Scanner

No in-app purchases

Questions

Is Astro Skies free?
Astro Skies is free to download, with no in-app purchases.
Is Deep Sky Scanner free?
Deep Sky Scanner is free to download, with no in-app purchases.
Do Astro Skies or Deep Sky Scanner have ads?
Astro Skies shows ads; Deep Sky Scanner does not.
Which is updated more often, Astro Skies or Deep Sky Scanner?
Astro Skies ships an update every 3 weeks, and Deep Sky Scanner every 4 days. Most recently, Astro Skies was updated on October 9, 2026 and Deep Sky Scanner on October 24, 2026.

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