GrowApp vs Robot Emil
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
GrowApp
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GrowApp helps you track and visualize changes in the appearance - the 'phenology' - of trees and other vegetation. The phenology of a particular tree at a certain location and a certain moment in time is stored in the GrowApp cloud-database by adding a photo taken with this app. The app presents a geographic map with the locations of all photos taken by all users. A photo can be viewed by tapping the corresponding photo location. If the photo location happens to be near your current location, you can add new photos of the same subject. The app then shows a semi-transparent version of the previous photo on top of the camera view so that camera and photo can be visually aligned. Once more than one photo of the same subject at the same location has been taken, the app automatically constructs time-lapsed versions of these photos. If enough photos are taken over sufficiently large intervals, the resulting animations should clearly show all aspects of the changing vegetation phenology over time.
Robot Emil
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Emil is fun. However, itβs not meant to offer just a fleeting fun for a couple of moments. Itβs school-oriented and based on scientific research and many years of work with teachers and students. Itβs rooted in international experiences gained in teaching computer science as well as in modern learning theories, while at the same time it fully meets the requirements of the current innovated State educational programme . For the first time ever, Emil creates computer science as a well thought-out and systematic cognitive process intended for every student. Emil changes computer science from a subject simply teaching computer use to a new form of exploration, problem solving, and collaborative partnership between subjects. Computer Science with Emil teaches students how to live and work responsibly in the digital environment, and how to explore and change the world.
Screenshots
Verdict
The clearest difference is update cadence: Robot Emil at every 3 months against GrowApp's every 28 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GrowApp ships an update every 28 months, Robot Emil every 3 months. The most recent releases landed on September 5, 2026 and September 6, 2026 respectively.
| Parameter | GrowApp | Robot Emil |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 28 months | Every 3 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 β better | 12.0 |
| Further details β not scored | ||
| Size | 6 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Stichting voor Duurzame Ontwikkeling | Indicia, s.r.o. |
In-app purchases
GrowApp
No in-app purchases
Robot Emil
No in-app purchases









