Comparison

Space Eye Guide vs universe2go+

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

Head to head
About

Space Eye Guide

Features
Read full description

Make the most of your visit to the observatory with the Space Eye app. With our special app, your experience begins as soon as you start out on your journey here. On the adventure trail, you can listen to a wealth of fascinating stories about space and the environment. And once you enter the exhibition, the Space Eye app will provide you with an audio guide with background information about each of the exhibits.

About

universe2go+

Explore the night sky with an augmented reality guide. This app provides audio and visual information about stars, constellations, and deep-sky objects, enhanced by your smartphone's sensors and an AR viewer.

Highlights
  • Augmented reality sky viewing
  • Over 3 hours of audio narration
  • Extensive star and object catalog
  • Context-aware see-through AR
  • Multiple exploration modes (Starter, Mythology, Deep-Sky)
  • Automatic sensor recalibration
Features
Read full description

universe2go+ is an audio-visual sky guide specially designed for usage with the augmented reality (AR) viewer universe2go+. universe2go+ contains more than 3 hours of excellent audio (available in english, German, French and Spanish) and hundreds of specially processed images. It contains more than 2 million star comprising the complete Hipparcos star catalogue (120.000 stars), stars from the GAIA catalogue and NGC catalogue (7.000 objects). In conjunction with the AR-Astro-Glassses (AR = augmented reality) you can see the night sky with all the stars AND at the same time you will see additional information about the stars and constellations. This way a symbiosis between the real sky and virtual graphics and text is created. universe2go+ will use the sensors of your smartphone to generate the corresponding information for the exact spot of the sky that you are looking at. Maybe you are already familiar with some other starmap apps which can do this also, but universe2go+ is very different! In Planetarium-Mode (when the smartphone is inserted into the AR-viewer) it will guide you through the night sky and has 3 major advantages compared to other planetarium apps: 1) universe2go+ uses a special algorithm and heuristics to identify the star you are looking at with high reliability. In addition it will use the camera of your smartphone to recalibrate the sensors every time you keep the device still. 2) universe2go+ displays the constellations the same size and the same place as the appear in the sky. This is called context aware see-through augmented reality. This makes it much easier for the beginner to do the matching between digital content and reality. 3) universe2go+ is fun. You get an automatically activated zoom, that will show you planets, nebulae, galaxies, satellites and much more. That's super cool and fun. universe2go+ has several modes so you can explore the night sky in many different ways: 1) Starter-Mode: explore all 88 official constellations. See lines connecting the appropriate stars and listen to information describing the constellation. 2) In addition to Starter mode get more detailed information about prominent stars. 3) Mythology-Mode: listen to entertaining stories about the constellations which have been told by the ancient greeks. This way you will easily learn much about the heroes of old, Gods, Beasts and beautiful princesses. 4) Deep-Sky-Mode: see images (most of the from the Hubble Space Telescope) of planets, nebulae, star clusters, galaxies, comets, satellites in a way that would be impossible even with the best telescope. In star map mode the universe2go+ app can be used without the augmented reality viewing device. NOTICE: will need the universe2go+ Astro-Glasses to use the Modes Starter, Discovery, Mythology and Deep-Sky. (see universe2go.com for more information) Compatible with all iPhones with IOS version 12.0 and above. Runs also on iPad. The App universe2go+ can also be used with the first version of the universe2go AR-Viewer, but the camera support will not be available, due of the closed lid.

Screenshots

Space Eye Guide4 screens
universe2go+4 screens

Verdict

The call

The clearest difference is update cadence: Space Eye Guide at every 3 months against universe2go+'s every 7 months. universe2go+'s advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.6). On price, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Space Eye Guide ships an update every 3 months, universe2go+ every 7 months. The most recent releases landed on October 15, 2026 and October 23, 2026 respectively.

Scorecard3 real differences ยท 5 level
Space Eye Guide versus universe2go+: the parameters behind the verdict, then further details
ParameterSpace Eye Guideuniverse2go+
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 3 months โ€” betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
Monetizationโ€”Free
DevicesiPhoneiPhone, iPad, iPod โ€” better
Requires iOS16.612.0 โ€” better
Further details โ€” not scored
Size36 MB94 MB
Age rating4+9+
DeveloperStiftung Sternwarte Uechtinnospiring GmbH

In-app purchases

None

Space Eye Guide

No in-app purchases

None

universe2go+

No in-app purchases

Questions

Is Space Eye Guide free?
Space Eye Guide is free to download, with no in-app purchases.
Is universe2go+ free?
universe2go+ is free to download, with no in-app purchases.
Do Space Eye Guide or universe2go+ have ads?
Neither Space Eye Guide nor universe2go+ shows ads.
Which is updated more often, Space Eye Guide or universe2go+?
Space Eye Guide ships an update every 3 months, and universe2go+ every 7 months. Most recently, Space Eye Guide was updated on October 15, 2026 and universe2go+ on October 23, 2026.

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