Astrophysics I vs Trees & shrubs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astrophysics I
Explore the solar system with over 90 screens and 40 3D animations explaining astrophysics concepts. Ideal for teachers to use in classrooms, it covers gravity, planetary details, and astronomical constants.
- Solar system coverage
- Astrophysics explanations
- 3D animations
- Classroom projection feature
- Detailed topic lists
- Physical and astronomical constants
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Astrophysics I is the first of a series of three educative applications in astronomy. This first part covers the solar system. More than 90 screens of astronomy on the solar system ! More than 40 animations to explain astrophysics, most in 3D. For teachers !! Connect your iPad to a video projector and show the animations to your students in classroom. List of topics: Introduction: - Reminder of mathematics, - Reminder of mechanical, - Coordinate Systems, - Time measurement. Gravity - Gravity, - The orbits, - The orbit elements, - Kepler's laws, - The Lagrangian points. The Solar System - Earth, - The Earth-Moon system, - The Earth's atmosphere, - Atmospheres, - Distance Scale, - Models of Solar Systems, - Asteroids, - Comets, - The planets. Constants - Physical constants, - Astronomical constants. References - Books, - Websites.
Trees & shrubs
Identify European trees and shrubs with detailed photos and descriptions. Offline access allows for use during outdoor excursions. Features include a selection assistant, distribution maps, and personal note-taking.
- Offline identification
- Detailed species photos
- Selection assistant for identification
- Distribution maps
- Personal notes and favorites
- Search by name
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Trees and shrubs allows you to easily identify 319 trees and shrubs, either native from Europe or introduced. These are generally wild trees and shrubs, but the cultivated species have been included for a large part of them. For each species several photos are proposed, for example: • The whole tree • Leaves • Flowers • Fruits or seeds • Trunk or bark All photos are included in the software. You can therefore use Trees and shrubs during your walks in the countryside, without an internet connection. Summary: - An assistant allows you to select criteria such as the shape or structure of the leaves, flowers, fruits. Thus, you can reduce the search to a limited number of species, and even directly identify a tree, in some cases. - The assistant is divided into two pages: the first page shows the trees with leaves, the second shows the conifers. - Distribution map in Europe for each species. - List view by name, Latin name, or both family and name, and by groups. - Search by word (English name or Latin name) directly from the home screen. - For each species, you can write personal notes. - Export, save or share notes by email. - List of favorite species, which allows you to gather the trees or shrubs you want to examine or compare. - Send the current species by email: a button is provided for this purpose at the end of the description of each species (internet connection required) - For each species: Description, flowering period, size, size of the flowers, altitude range, lifespan. At any time, you can display all members of the same genus or family than the displayed species using the buttons below the image. Warning ! Despite all the precautions taken during the development of this software, errors could remain. If you notice an error, you can contact us using the contact address you will find on www.antiopa.info or in the software under the help / contact section.
Screenshots
Verdict
The clearest difference is review sentiment: Trees & shrubs at 75% against Astrophysics I's 48%. Trees & shrubs also leads on iOS requirement (15.6 vs 18.6). Astrophysics I's advantage is update cadence (every 3 months vs every 12 months). On price, ads, in-app purchases and monetization model 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
Astrophysics I costs $3.99 and Trees & shrubs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Astrophysics I ships an update every 3 months, Trees & shrubs every 12 months. Both last shipped on October 26, 2026.
| Parameter | Astrophysics I | Trees & shrubs |
|---|---|---|
| Price | $3.99 | $3.99 |
| Rating | 4.4 (9 ratings) — better | — |
| Positive reviews | 48.5% of reviews | 75.0% of reviews — better |
| Number of ratings | 9 — better | — |
| Update frequency | Every 3 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 249 MB | 116 MB |
| Age rating | 4+ | 4+ |
| Developer | Xavier Daxhelet | Pierre-Olivier Templier |
Customer experience
Astrophysics I
Trees & shrubs
In-app purchases
Astrophysics I
No in-app purchases
Trees & shrubs
No in-app purchases






