Comparison

Adopt vs StarPromenadeLight

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Adopt

Access real-time data from autonomous oceanographic floats that record seismic activity. View instrument locations, trajectories, and health parameters. This app provides a low-cost method for oceanic data collection.

Highlights
  • View MERMAID instrument locations
  • Access recent trajectories
  • Obtain ocean depth information
  • View instrumental metadata
  • Identify instruments by name and institution
Features
Read full description

Adopt-A-Float allows users to access trajectory metadata and state-of-health parameters of the EarthScope-Oceans MERMAID fleet. MERMAID, short for Mobile Earthquake Recording in Marine Areas by Independent Divers, is a long-lived drifting autonomous float equipped with a hydrophone capable of recording acoustic waveforms generated by distant earthquakes. Most earthquakes occur at or near plate boundaries, yet most seismic monitoring stations are on dry land. Deployed but not recovered, telemetering data in near-real-time, MERMAIDs are uniquely positioned as a low-cost alternative for geophysical and environmental oceanic data collection. Diving down to a typical parking depth of 1500 m below the ocean surface, they passively drift with the ocean currents, recording the ambient acoustic wavefield, identifying earthquake signals, and surfacing to report those, on average every 4-7 days with the current settings, which are expected to give them a five-year life span. When at the surface, MERMAID collects GPS location and time information and communicates with the IRIDIUM satellite constellation using RUDICS. Using this iOS app you can: View the current location of all MERMAID instruments View their most recent trajectories and obtain information about ocean depth View instrumental metadata such as battery level and instrument pressure readings Identify the instruments by name and by operating institution Developed by Tenzing Sherpa ©2021 by Frederik J Simons (www.frederik.net) Let us know what you think! Give us feedback via https://github.com/tenzingsherpaa/AdoptAFloat-3.0/issues We acknowledge support from the U.S. National Science Foundation (www.nsf.org) under grants OCE-1917058 and EAR-1150145 (CAREER), and from Princeton University. MERMAID was designed by scientists and engineers and is now built by OSEAN SAS (www.osean.fr), from which it is commercially available. EarthScope-Oceans (www.earthscopeoceans.org) is an organization founded by a multidisciplinary group of geoscientists who are coordinating efforts to create a global network of sensors that monitor the Earth from within the oceanic environment. As other organizations are doing for the land-based seismological communities today, EarthScope-Oceans shepherds national projects into the international arena where globally relevant, applicable, and mutually agreed-upon decisions can be made on instrument development, science objectives, data management, and outreach.

About

StarPromenadeLight

Experience realistic space travel with a simulator that uses extensive star catalog data. Explore the universe at incredible speeds, witnessing familiar constellations transform into new shapes. Choose your destination and embark on an interstellar journey.

Highlights
  • Realistic space travel simulation
  • Extensive stellar position data
  • High-speed interstellar flight
  • Transforming constellation visuals
  • Selectable star destinations
  • Adjustable flight speed
Features
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This is a space travel simulator. This app has many stellar position data from star catalogue. By using them ,you can experience real space travel. You can aboard the space ship that can fly some billions times faster than ISS. As you fly, familiar constellations metamorphose into the novel shape you have never seen before. Select your favorite star(destination) in [Control Room]. Go to [Univers], and press start or back button. You can change the speed(Engine Power) by slider

Screenshots

Adopt3 screens
StarPromenadeLight3 screens

Verdict

The call

The clearest difference is update cadence: StarPromenadeLight at every 13 months against Adopt's every 40 months. StarPromenadeLight also leads on iOS requirement (13.5 vs 17.5). On price, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Adopt ships an update every 40 months, StarPromenadeLight every 13 months. Both last shipped on November 3, 2026.

Scorecard2 real differences · 8 level
Adopt versus StarPromenadeLight: the parameters behind the verdict, then further details
ParameterAdoptStarPromenadeLight
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 40 monthsEvery 13 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.513.5 — better
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperFrederik SimonsTakao Akatsu

Customer experience

Adopt

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

StarPromenadeLight

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Adopt

No in-app purchases

None

StarPromenadeLight

No in-app purchases

Questions

Is Adopt free?
Adopt is free to download, with no in-app purchases.
Is StarPromenadeLight free?
StarPromenadeLight is free to download, with no in-app purchases.
Do Adopt or StarPromenadeLight have ads?
Neither Adopt nor StarPromenadeLight shows ads.
Which is updated more often, Adopt or StarPromenadeLight?
Adopt ships an update every 40 months, and StarPromenadeLight every 13 months. Most recently, Adopt was updated on November 3, 2026 and StarPromenadeLight on November 3, 2026.

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