Depth vs Copernicus Sentinel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Depth
Measure the depth of wells, cliffs, and other vertical drops by dropping an object and listening for the impact. It also calculates the speed of a falling object in real-time.
- Measure well and cliff depths
- Calculate freefall speed
- Real-time drop analysis
- Uses sound for measurement
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Well, cliffs, skyscrapers... Drops something and you hear when it touches the ground. iPhone will say the depth of the well, cliffs or other. If you rely on sight. the program displayes depth and speed, at the moment, of the body in freefall.
Copernicus Sentinel
Explore and track Earth observation satellites in real-time. Discover satellite details, view 3D models, and receive notifications for overhead passes. Stay updated on the latest news and products from this space observation program.
- Real-time satellite tracking
- Detailed 3D satellite models
- Overhead pass notifications
- Latest news and product updates
- Historical data transmission visualization
- Interactive 3D globe exploration
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The Sentinel App is a gateway to knowing the Copernicus Sentinel satellites. It lets users track the satellites in real-time, discover their key elements, read the latest news and learn more about their products. Users can, among other things, explore detailed 3D models of the satellites, see the last and next time they have been and will be over the user's location, move the satellites to the time of the last data transmission and smoothly move them back to their current location over the 3D globe. Notifications can also be set to be warned when the satellites are flying by. ESA is developing a series of next-generation Earth observation missions, on behalf of the joint ESA/European Commission initiative Copernicus (previously GMES - Global Monitoring for Environment and Security). The goal of the program is to replace current and older Earth observation missions, such as ERS and Envisat, which have reached or are close to reaching the end of their operational life span. This will ensure a continuity of data so that there are no gaps in ongoing studies. Each mission will focus on a different aspect of Earth observation, such as Atmospheric, Oceanic or Land monitoring, and the data will be of use in many applications.
Screenshots
Verdict
The clearest difference is price: Copernicus Sentinel at Free against Depth's $0.99. Copernicus Sentinel also leads on rating (4.3 vs 1.0) and update cadence (every 2 months vs every 21 months). Depth's advantage is review sentiment (50% vs 14%) and iOS requirement (11.0 vs 14.0). On 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
Copernicus Sentinel is free to download; Depth costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Copernicus Sentinel holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Copernicus Sentinel has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Depth's written reviews are positive against 14% of Copernicus Sentinel's, so the app with the better star average is not the one people write more warmly about.
Depth ships an update every 21 months, Copernicus Sentinel every 2 months. The most recent releases landed on August 22, 2026 and October 2, 2026 respectively.
| Parameter | Depth | Copernicus Sentinel |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.3 (18 ratings) — better |
| Positive reviews | 50.0% of reviews — better | 14.3% of reviews |
| Number of ratings | 1 | 18 — better |
| Update frequency | Every 21 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 73 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | Pietro Massimino | ESA - European Space Agency |
Customer experience
Depth
Copernicus Sentinel
In-app purchases
Depth
No in-app purchases
Copernicus Sentinel
No in-app purchases
Questions
Is Depth free?
Is Copernicus Sentinel free?
Which has better reviews, Depth or Copernicus Sentinel?
Do Depth or Copernicus Sentinel have ads?
Which is updated more often, Depth or Copernicus Sentinel?
Other comparisons
