Adopt vs Welsh Language Lessons
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- View MERMAID instrument locations
- Access recent trajectories
- Obtain ocean depth information
- View instrumental metadata
- Identify instruments by name and institution
Read full descriptionHide 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.
Welsh Language Lessons
Master the Welsh language with a comprehensive, user-friendly app designed for beginners and travelers. It offers over 8000 words, 200+ topics, and interactive quizzes to build fluency from the ground up. Learn offline with native pronunciations and track your progress through structured chapters.
- 8000+ words and phrases
- 200+ topics and 23 chapters
- 6 interactive quiz modes
- Native speaker audio
- Offline learning capability
- Progress tracking and flashcards
Read full descriptionHide full description
Learning Welsh with confidence using the most comprehensive and user-friendly app for beginners, travelers, and language lovers. Learn Welsh Language offers a step-by-step course with over 8000 words and phrases, 200+ topics, and 23 structured chapters—perfect for building fluency from the ground up. Why You'll Love It: Complete Learning Journey Start with the Welsh alphabet and grammar, then move to real-life scenarios and advanced conversations. 6 Different Quiz Modes Learn with interactive quizzes: reading, listening, true/false, and more. Native Pronunciations Every word and phrase spoken clearly by native Welsh speakers. Offline Learning Study anywhere, anytime—no internet needed. Track Your Growth Monitor your stats, review with flashcards, and stay motivated. The 23 Chapters You'll Master: 1) Everyday Basics 2) Social Expressions 3) Getting Around 4) At Home 5) Food & Eating 6) School & Education 7) Travel & Transport 8) Managing Money 9) Health & Medical 10) Traditions & Culture 11) Daily Activities 12) Shopping & Cooking 13) Free Time & Entertainment 14) Banking & Finance 15) Well-being & Self-care 16) Personal Hygiene & Grooming 17) Vacations & Sightseeing 18) Mail & Packages 19) Eating Out 20) Digital Life 21) Conversations & Connections 22) Cleaning & Housework 23) Learning & Studying Perfect For: +First-time learners +Travelers visiting Wales UK England +Anyone passionate about languages +Students and professionals looking to communicate better Download Learn Welsh Language now and begin your journey to speaking confidently and naturally. Trusted by learners worldwide for fast, immersive, and effective language mastery. Privacy Policy: https://owlspeak.web.app/privacy Terms of Use: https://owlspeak.web.app/terms
Screenshots
Verdict
The clearest difference is review sentiment: Adopt at 100% against Welsh Language Lessons's 0%. Adopt also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 8). Welsh Language Lessons's advantage is update cadence (every 2 months vs every 40 months) and ratings volume (5 vs 1). On price 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. Welsh Language Lessons sells 8 in-app purchases, starting at $7.99 per 7 days. Adopt asks for nothing beyond the download.
Adopt holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Welsh Language Lessons has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Adopt's written reviews are positive against 0% of Welsh Language Lessons's.
Adopt ships an update every 40 months, Welsh Language Lessons every 2 months. The most recent releases landed on June 1, 2026 and September 28, 2026 respectively.
| Parameter | Adopt | Welsh Language Lessons |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 40 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 250 MB |
| Age rating | 4+ | 4+ |
| Developer | Frederik Simons | Ali Umer |
Customer experience
Adopt
Welsh Language Lessons
In-app purchases
Adopt
No in-app purchases
Welsh Language Lessons
- Welsh Weekly3 Days trial$7.997 Days
- Welsh$12.991 Month
- Welsh Yearly$34.997 Days
- Welsh$2.99
- Welsh$4.99
- Welsh$5.99
Show 2 moreShow fewer
- Welsh$8.99
- Welsh$59.99
Questions
Is Adopt free?
Is Welsh Language Lessons free?
Which has better reviews, Adopt or Welsh Language Lessons?
Do Adopt or Welsh Language Lessons have ads?
Which is updated more often, Adopt or Welsh Language Lessons?
Other comparisons















