Comparison

Ukulele by Ear vs R&D Guru

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

Head to head
About

Ukulele by Ear

Features
Read full description

…so you learned a couple of chords and your favorite melodies, but you don’t feel any progress anymore… Ukulele by Ear comes to rescue! This is a pro tool for ukulele learners who want a shortcut to fluency on the instrument. You can start on any level and still gain powerful progress. With this tool you will be able to play the ukulele it is meant to be played by ear, any melody or solo, you will gain a very deep understanding of chords and the notes they consist of and are surrounded by, they tell you all about this in lessons, but you never actually get to ingrain it. Yet this is the most important skill there is for mastering the ukulele and play any music by ear. The app allows you to practice with just the smartphone or with your real ukulele. This exercise might look a little bit tedious, but trust us, you will see very powerful results in your music within days of using the app 10-20 minutes per day. You could call it hacking the ukulele. You will learn to play the instrument by ear in DAYS with Ukulele by Ear, something other musicians struggle for YEARS for and still not everyone gets there. You will. During the first month. How much money would you pay to obtain such a skill? Consider this your lucky day, because you are on your way for real musicianship whether it is your hobby or you want to pursue career in music, this app sets you app for the best results.

About

R&D Guru

Features
Read full description

R&D Guru is the ultimate app for anyone interested in cosmetic chemistry and formulation. Whether you are a chemical engineering student looking to expand your knowledge, a cosmetic manufacturer wanting to create unique products, a chemist in search of new techniques, or simply a person fascinated by the world of cosmetic chemistry, this app is for you. Our app is designed to educate and inspire, providing you with the tools and resources needed to create your own cosmetic products. With access to expert-led courses, community feeds, workshops, message rooms, and more, you can learn from industry professionals and connect with like-minded individuals. Learn the ins and outs of cosmetic formulation, discover the latest trends and techniques, and explore the world of cosmetic chemistry like never before. Whether you are a beginner looking to get started or a seasoned professional seeking to expand your skills, R&D Guru has everything you need to succeed. Join our community today and unlock the secrets of cosmetic formulation. Become a master of the art and science of cosmetic chemistry with R&D Guru.

Screenshots

Ukulele by Ear4 screens
R&D Guru4 screens

Verdict

The call

The clearest difference is price: R&D Guru at Free against Ukulele by Ear's $4.99. Ukulele by Ear's advantage is in-app purchases (none vs 1) and update cadence (every 3 months vs every 11 months). On ads there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

R&D Guru is free to download; Ukulele by Ear costs $4.99 up front. R&D Guru sells 1 one-off in-app purchase. Ukulele by Ear asks for nothing beyond the download.

UpkeepUpdate frequency

Ukulele by Ear ships an update every 3 months, R&D Guru every 11 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard5 real differences Β· 1 level
Ukulele by Ear versus R&D Guru: the parameters behind the verdict, then further details
ParameterUkulele by EarR&D Guru
Price$4.99Free β€” better
Update frequencyEvery 3 months β€” betterEvery 11 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS11.0 β€” better16.4
Further details β€” not scored
Size190 MB85 MB
Age rating4+17+
DeveloperOleg SokolovMohammad Hasan

In-app purchases

None

Ukulele by Ear

No in-app purchases

1 purchases

R&D Guru

One-time1
  • 20 Important Cosmetic Ingredients$0.99

Questions

Is Ukulele by Ear free?
Ukulele by Ear costs $4.99, with no in-app purchases.
Is R&D Guru free?
R&D Guru is free to download, with in-app purchases available.
Do Ukulele by Ear or R&D Guru have ads?
Neither Ukulele by Ear nor R&D Guru shows ads.
Which is updated more often, Ukulele by Ear or R&D Guru?
Ukulele by Ear ships an update every 3 months, and R&D Guru every 11 months. Most recently, Ukulele by Ear was updated on November 7, 2026 and R&D Guru on October 30, 2026.

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