Comparison

Adopt vs Welsh Language Lessons

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

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.

Highlights
  • 8000+ words and phrases
  • 200+ topics and 23 chapters
  • 6 interactive quiz modes
  • Native speaker audio
  • Offline learning capability
  • Progress tracking and flashcards
Features
Read 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

Adopt3 screens
Welsh Language Lessons4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard8 real differences · 2 level
Adopt versus Welsh Language Lessons: the parameters behind the verdict, then further details
ParameterAdoptWelsh Language Lessons
PriceFreeFree
Rating5.0 (1 ratings) — better4.2 (5 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings15 — better
Update frequencyEvery 40 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.513.0 — better
Further details — not scored
Size1 MB250 MB
Age rating4+4+
DeveloperFrederik SimonsAli Umer

Customer experience

Adopt

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

Welsh Language Lessons

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Adopt

No in-app purchases

8 purchases

Welsh Language Lessons

Subscriptions3
  • Welsh Weekly3 Days trial$7.997 Days
  • Welsh$12.991 Month
  • Welsh Yearly$34.997 Days
One-time5
  • Welsh$2.99
  • Welsh$4.99
  • Welsh$5.99
Show 2 more
  • Welsh$8.99
  • Welsh$59.99

Questions

Is Adopt free?
Adopt is free to download, with no in-app purchases.
Is Welsh Language Lessons free?
Welsh Language Lessons is free to download, with in-app purchases available.
Which has better reviews, Adopt or Welsh Language Lessons?
Adopt is rated higher. Adopt averages 5.0 out of 5 from 1 ratings, while Welsh Language Lessons averages 4.2 from 5 ratings.
Do Adopt or Welsh Language Lessons have ads?
Welsh Language Lessons shows ads; Adopt does not.
Which is updated more often, Adopt or Welsh Language Lessons?
Adopt ships an update every 40 months, and Welsh Language Lessons every 2 months. Most recently, Adopt was updated on June 1, 2026 and Welsh Language Lessons on September 28, 2026.

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