Comparison

ObsIdentify vs SkyWindow

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

Head to head
About

ObsIdentify

Instantly identify plants, animals, and mushrooms from photos taken in Europe or the Dutch Caribbean. Track your discoveries, earn rewards, and contribute to scientific research by sharing your observations.

Highlights
  • One-click species recognition
  • Collect wildlife observations
  • Tips for finding new species
  • Earn badges and join challenges
  • Create and share observations with groups
  • Contribute to biological research
Features
Read full description

Recognize nature in one click! Take a photo in Europe or the Dutch Caribbean and find out which species it is. Collect all your wildlife observations in the app. You'll be rewarded with tips to find new species, earn badges, and be invited to join challenges. Create groups with colleagues, family or friends, to share your stunning nature observations. Your observations, and those of others, contribute to biological research and knowledge about nature. Every observation counts! ObsIdentify only recognizes wild animals, plants and mushrooms in Europe and the Dutch Caribbean. Please do not use the app for selfies, people, pets, house or garden plants. The image recognition in ObsIdentify is made possible by millions of observations from thousands of users of Waarneming.nl, Waarnemingen.be and Observation.org. ObsIdentify is a product of the Observation International Foundation, in collaboration with Naturalis Biodiversity Center (The Netherlands) and Natuurpunt (Belgium).

About

SkyWindow

Features
Read full description

SkyWindow – Smart Planning for Astronomy & Astrophotography Many astronomy and astrophotography enthusiasts do not observe under perfect skies. Buildings, balconies, windows, and trees often limit the visible sky area. SkyWindow was designed exactly for these situations. SkyWindow helps you efficiently plan observations and astrophotography sessions based on your real visible sky window — ideal for smart telescopes and mobile observing setups. Whether you observe from a balcony, garden, rooftop window, or travel location, SkyWindow helps you determine when celestial objects become visible and worth capturing. Features • Tonight Quick access to the best observing opportunities for the current night, including visibility, timing, and sky conditions. • Catalogs Browse supported astronomy catalogs, inspect object details, and jump directly into observation planning. • Comet Hunter Plan observations for comets and asteroids with focus on motion, visibility, and timing. • Sites Manage observing locations such as balconies, gardens, windows, or remote travel sites. • Planner Build structured observation plans based on visibility windows, altitude, azimuth, and timing. • Mosaic Planner Prepare mosaic imaging projects for large deep-sky objects and advanced framing work. • Sky Journey Your personal observing journal with saved sessions, captured targets, favorites, retries, and observing history. Built for Modern Astronomy SkyWindow is designed for modern smart telescopes and efficient observation planning, especially for observers with limited sky visibility. Perfect for: • Smart telescopes • Balcony astronomy • Window observing • Mobile astrophotography • Travel observing • Deep-sky planning Plan smarter. Use your sky window efficiently. Explore the night sky with SkyWindow. SkyWindow is available in English, German, French, Spanish, Japanese, and Simplified Chinese.

Screenshots

ObsIdentify4 screens
SkyWindow4 screens

Verdict

The call

The clearest difference is price: ObsIdentify at Free against SkyWindow's $4.99. ObsIdentify also leads on iOS requirement (15.1 vs 26.2). SkyWindow's advantage is update cadence (every 5 days vs every 3 weeks). 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

ObsIdentify is free to download; SkyWindow costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ObsIdentify ships an update every 3 weeks, SkyWindow every 5 days. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
ObsIdentify versus SkyWindow: the parameters behind the verdict, then further details
ParameterObsIdentifySkyWindow
PriceFree — better$4.99
Rating2.0 (5 ratings) — better—
Positive reviews58.3% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better26.2
Further details — not scored
Size45 MB19 MB
Age rating4+4+
DeveloperObservation InternationalDung Le

In-app purchases

None

ObsIdentify

No in-app purchases

None

SkyWindow

No in-app purchases

Questions

Is ObsIdentify free?
ObsIdentify is free to download, with no in-app purchases.
Is SkyWindow free?
SkyWindow costs $4.99, with no in-app purchases.
Do ObsIdentify or SkyWindow have ads?
Neither ObsIdentify nor SkyWindow shows ads.
Which is updated more often, ObsIdentify or SkyWindow?
ObsIdentify ships an update every 3 weeks, and SkyWindow every 5 days. Most recently, ObsIdentify was updated on September 30, 2026 and SkyWindow on October 1, 2026.

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