Comparison

Learn Trombone vs Locker Practice

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

Head to head
About

Learn Trombone

Learn to play the trombone with interactive lessons, real-time feedback on rhythm and pitch, and a built-in tuner. Access a large library of songs and exercises for all skill levels, and stay motivated with weekly challenges.

Highlights
  • Live feedback on rhythm and pitch
  • Integrated trombone tuner
  • Large song and exercise library
  • Step-by-step lessons
  • Fingering charts
  • Weekly challenges
  • Play-alongs
Features
Read full description

Learn to play the trombone and improve on rhythm and pitch. tonestro listens to you while you play the trombone and gives you immediate live-feedback on rhythm and pitch. A tuner lets you tune your trombone easily. tonestro for Trombone offers a large collection of songs, exercises and guided lessons for every skill level. Learn how to read music notes and improve your trombone skills by playing many songs and exercises. With the tuner you tune your trombone fast and easily for perfect pitch. A metronome and specially composed background music with play alongs for many songs guide you the way to perfect rhythm. Weekly challenges with hand-picked songs give you the extra motivation to improve your skills when you compare yourself with trombone players from around the world. OVERVIEW - Get instant feedback on rhythm & pitch - Learn to play the trombone or learn something new - Enjoy a large collection of songs - Discover trombone lessons & exercises - Start with your first lessons on music notes or choose from many songs - Learn the correct fingerings with fingering charts - Tune your trombone with our integrated tuner - Enjoy songs with play alongs - Stay motivated with weekly challenges LEARN Learn how to play the trombone or improve your skills with lessons, fingering charts and exercises. Step-by-step lessons will guide you through your first notes on the trombone. Detailed explanations and fingering charts tell you how to play a certain note. A tuner helps you find the correct pitch. Test your knowledge in exams and see how fast you progress. Use your newly learned skills and play your first songs on your trombone. For experienced trombone players there’s always something new to learn with advanced lessons, songs and exercises. PRACTICE Use tonestro’s live-feedback feature on rhythm and pitch to improve your skills. See where you struggle with intonation and work on your pitch to become a better trombone player. Switch to practice mode and choose a slower tempo to work on getting that rhythm right. Let the metronome guide you through the songs and use the tuner to not only tune your trombone but also to see which notes are the ones you have to be very careful with pitch. PLAY Discover songs from all music genres and play trombone songs for every skill level. Whether you’re a fan of classical music or you prefer jazz songs instead: With tonestro’s large sheet music library you’ll find just the songs you need for playing your trombone. And you don’t have to play alone: With play alongs you’re playing with a whole band in the background. Always on your side is the tonestro tuner, which is an easy-to-use tuner that will make sure that you’re in tune. And there’s always the metronome that will guide you through the songs. COMPETE Do you want to prove your skills? Enter our weekly challenges! Compete with trombone players from around the world and fight for the podium. Practice the songs to score as many points as possible and become the best trombone player in the tonestro world. Don’t forget to use the tuner first, so that you can start the challenge with perfect preparation. tonestro requires a subscription to access the entire learning content and song library. Each subscription plan may include a 3-day free trial period. Terms: https://www.tonestro.com/terms Privacy policy: https://www.tonestro.com/privacy

About

Locker Practice

Master combination locks with a realistic digital dial. Practice opening locks repeatedly until it becomes automatic, with step-by-step guidance and progress tracking. Ideal for students and anyone needing to quickly open a padlock.

Highlights
  • Realistic rotary dial simulation
  • Step-by-step opening guidance
  • Customizable combinations
  • Progress tracking (success rate, best time)
  • Offline functionality
  • No ads or interruptions
Features
Read full description

Walk up to your locker already knowing how it opens. Locker Practice is combination lock practice on a dial that behaves like the real thing. Spin it with your finger, follow the true right-left-right sequence, and open your locker combination again and again until your hands remember it. No real padlock needed, no hallway audience, no daily limit. A dial with real weight Drag the dial and it turns with you, giving a haptic pulse at every notch, then settling on the nearest number when you let go — just like the padlock on your locker door. That feel is what a school handbook diagram can never teach you, and it is the whole point of locker practice. The real sequence, enforced A combination lock is a sequence, not a password. So it makes you do it properly: • Spin clockwise at least three full turns to clear the dial, then stop on your first number • Spin counter-clockwise one full turn past it, then stop on your second number • Spin clockwise straight to your third number — do not go past it • Swipe the shackle up Get a direction or the extra turn wrong and it stays shut, exactly like the real one. That is what separates real lock practice from tapping digits into a keypad. It tells you what you did wrong "It didn't open" is useless feedback. When you make one of the classic mistakes, this app names it: wrong way to start, not spun far enough to reset, forgot the extra full turn, spun past the third number. One tap resets the dial and you go straight into the next attempt. Practice the code you were actually given Type in the lock combination your school handed you and rehearse that exact one, or generate a random one when you just want reps. Switch on "new code after each open" for fresh combinations, so you train the motion rather than memorise one answer. Save the codes you use most and name them, so gym locker memory is one less thing to carry. When you want pressure Use it as a school practice lock at home. Challenge mode hides the code and starts a countdown on the practice lock. School Sim tightens it to 20 seconds, so the first time you feel rushed is not the first morning of term. Watch yourself get better Progress tracks success rate, best time, streaks and attempts — you see the moment a lock combination stops needing conscious thought. What is inside • A true-to-life rotary dial you drag, with per-notch haptics • Enforced clockwise, counter-clockwise, clockwise sequence with the extra full turn • Step-by-step walkthrough showing the current step and direction • Named, instant correction for the mistakes that keep lockers shut • Reset any time, plus how to reset a borrowed or second-hand padlock • Your own code or a random one; optional new code after every open • Dial ranges 0-29, 0-39 and 0-49 • Challenge countdown and School Simulation modes • Named saved combinations, success rate, best time and streaks • Haptics you can switch off; offline, 33 languages, light and dark What this app is not This is a practice lock for a code you already have. It does not open, crack or decode anyone else's lock and it teaches no lock picking. It does not pair with bluetooth or smart locks and does not cover keypad or fingerprint locks. No account, no cloud sync — everything stays on your device. Set your code, spin the dial, and make locker combination practice something you did at home instead of something you fumble in the hallway. Terms of Use: https://zeroplay.io/docs/legal/terms-of-service Privacy Policy: https://zeroplay.io/docs/legal/privacy-policy

Screenshots

Learn Trombone4 screens
Locker Practice4 screens

Verdict

The call

The clearest difference is review sentiment: Locker Practice at 100% against Learn Trombone's 59%. Locker Practice also leads on rating (4.7 vs 4.4). Learn Trombone's advantage is ratings volume (368 vs 87). On price, update cadence, 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. Learn Trombone sells 26 in-app purchases, starting at $17.49 per month and Locker Practice sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Locker Practice holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 368 and 87 respectively. Written reviews point the same way: 59% of Learn Trombone's written reviews are positive against 100% of Locker Practice's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 19, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Learn Trombone versus Locker Practice: the parameters behind the verdict, then further details
ParameterLearn TromboneLocker Practice
PriceFreeFree
Rating4.4 (368 ratings)4.7 (87 ratings) — better
Positive reviews59.2% of reviews100.0% of reviews — better
Number of ratings368 — better87
Update frequencyWeeklyWeekly
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size238 MB111 MB
Age rating4+4+
Developerfun.music IT GmbHZeroPlay Ltd.

Customer experience

Learn Trombone

All ratings368 ratings
Positive84.8%
Neutral3.5%
Negative11.7%
Written reviews76 reviews
Positive59.2%
Neutral6.6%
Negative34.2%

Locker Practice

All ratings87 ratings
Positive92.0%
Neutral2.3%
Negative5.7%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

26 purchases

Learn Trombone

Subscriptions26
  • 1 Month Premium$17.491 Month
  • tonestro Premium4 variants$29.991 Month
  • Learn Trombone - Premium$39.991 Month
Show 23 more
  • tonestro Premium$39.991 Month
  • tonestro Premium7 Days trial$44.491 Month
  • tonestro Premium$44.991 Month
  • Special trombone offer$56.991 Year
  • Special trombone offer$59.991 Year
  • Special trombone offer3 Days trial$59.991 Year
  • Special trombone offer7 Days trial$60.991 Year
  • Welcome offer$64.991 Year
  • tonestro Premium$74.991 Year
  • Special trombone offer$83.991 Year
  • tonestro Premium2 variants$99.991 Year
  • Learn to Play the Trombone7 Days trial$103.991 Year
  • One-Time Special Offer$109.991 Year
  • tonestro Premium$109.991 Year
  • Learn to Play the Trombone7 Days trial$111.991 Year
  • 1 Year Premium$119.991 Year
  • tonestro Premium$137.991 Year
  • tonestro Premium7 Days trial5 variants$149.991 Year
  • tonestro Premium3 variants$149.991 Year
  • tonestro Premium1 Month trial2 variants$149.991 Year
  • tonestro Premium2 Months trial$149.991 Year
  • tonestro Premium7 Days trial$197.991 Year
  • tonestro Premium7 Days trial$224.991 Year
1 purchases

Locker Practice

One-time1
  • Locker Practice Pro$14.99

Questions

Is Learn Trombone free?
Learn Trombone is free to download, with in-app purchases available.
Is Locker Practice free?
Locker Practice is free to download, with in-app purchases available.
Which has better reviews, Learn Trombone or Locker Practice?
Locker Practice is rated higher. Learn Trombone averages 4.4 out of 5 from 368 ratings, while Locker Practice averages 4.7 from 87 ratings.
Do Learn Trombone or Locker Practice have ads?
Both Learn Trombone and Locker Practice show ads.
Which is updated more often, Learn Trombone or Locker Practice?
Learn Trombone ships an update weekly, and Locker Practice weekly. Most recently, Learn Trombone was updated on October 19, 2026 and Locker Practice on October 14, 2026.

Other comparisons