Observation vs Brel Smart Building
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Brel Smart Building
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With the BREL SMART BUILDING dashboard you can easily operate and monitor your sun protection on the entire building. The motors are controlled by the specially developed software in the BREL SMART BUILDING control system. The BREL SMART BUILDING dashboard contains various functions for installing, programming and maintaining the motors, such as window cleaner security, installation security, control of weather forecasts and data for preventive maintenance.
Screenshots
Verdict
The clearest difference is update cadence: Observation at every 3 weeks against Brel Smart Building's every 4 months. Brel Smart Building's advantage is iOS requirement (12 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.
Observation ships an update every 3 weeks, Brel Smart Building every 4 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Observation | Brel Smart Building |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 12 — better |
| Further details — not scored | ||
| Size | 80 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Observation International | BREL NEDERLAND BV |
In-app purchases
Observation
No in-app purchases
Brel Smart Building
No in-app purchases
Questions
Is Observation free?
Is Brel Smart Building free?
Do Observation or Brel Smart Building have ads?
Which is updated more often, Observation or Brel Smart Building?
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