88 constellations vs Copernicus Touchbook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
88 constellations
Explore the night sky and identify celestial objects like stars, planets, and constellations. Set the sky to any position and time to learn about the universe.
- Identify stars and planets
- View constellations
- Set sky position and time
- Interactive sky map
- Educational astronomy tool
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The application allows you to set the sky by position and time, to identify the stars, planets and constellations.
Copernicus Touchbook
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Learn more about Europe's eyes on Earth with the new Copernicus Touchbook. Explore a wide range of images, videos and quizzes to discover just how Copernicus and its fleet of Sentinel missions are helping to improve daily life. From volcano monitoring to sustainable agriculture, Copernicus supports economies, protects life and helps people in need in Europe and worldwide. This interactive book allows you to choose your own starting point to guide you through the Copernicus programme at your own pace. You can browse by topic or by application to gain an in-depth understanding of each of the Sentinel satellites
Verdict
The clearest difference is update cadence: Copernicus Touchbook at every 2 weeks against 88 constellations's every 4 months. Copernicus Touchbook also leads on iOS requirement (9.0 vs 12.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
88 constellations ships an update every 4 months, Copernicus Touchbook every 2 weeks. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.
| Parameter | 88 constellations | Copernicus Touchbook |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPad |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladimir Vascak | ESA - European Space Agency |
In-app purchases
88 constellations
No in-app purchases
Copernicus Touchbook
No in-app purchases
Questions
Is 88 constellations free?
Is Copernicus Touchbook free?
Do 88 constellations or Copernicus Touchbook have ads?
Which is updated more often, 88 constellations or Copernicus Touchbook?
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