iTrektellen vs Observation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iTrektellen
This application allows users to submit counts to Trektellen.org. It requires a Trektellen account and is designed for submitting data, not for viewing it. Free accounts are available for those conducting regular counts on public migration sites.
- Submit counts to Trektellen.org
- Requires Trektellen account
- Designed for data submission
- Free account option available
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With this app you can submit counts to Trektellen.org. This app is not build to view counts and it not usable without an Trektellen account. If you do regular counts on a public migration site you can get your free account via the contact page on the Trektellen website.
Observation
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With Observation you can easily record nature observations in the field. Our online image recognition AI helps you identify the species on your images. You can choose to use the app offline anywhere in the world. Your observation data is stored on your phone first. Saved observations can be uploaded to Observation.org when online. This app is part of Observation.org; an EU-based platform for world wide biodiversity monitoring and citizen science. Observations that you save in your account are publicly visible for everyone who visits Observation.org. Take a look at the website to see what other observers have recorded and explore all data collected by our community. Observations are validated by species experts, after which the records are made available for scientific research.
Screenshots
Verdict
The clearest difference is update cadence: Observation at every 2 weeks against iTrektellen's every 4 months. iTrektellen's advantage is iOS requirement (12.2 vs 15.1). 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.
iTrektellen ships an update every 4 months, Observation every 2 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.
| Parameter | iTrektellen | Observation |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.2 — better | 15.1 |
| Further details — not scored | ||
| Size | 17 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Sovon Vogelonderzoek Nederland | Observation International |
In-app purchases
iTrektellen
No in-app purchases
Observation
No in-app purchases
