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Music ear-training / listening tools (pitch, sight-singing, rhythm, chord recognition, tuning): mostly Android users, subscription or one-time payment. Top players rely on heavy Meta paid acquisition
Watching Worth following · small-tool category First seen 2026-11-01 · last updated 2026-11-02
- Status
- Watching (single sample; the top player Pitch Trainer's volume is mostly bought)
- Why now, and how long the window lasts
- No clear time window. People have always paid to learn music; Pitch Trainer shows a small US company can reach 200k installs in half a year and top the Education charts in several stores, but it was bought with ads.
- Confidence
- Low. Kill condition: Pitch Trainer's installs fall along with its ad count dropping below 50 (showing it runs entirely on paid acquisition). Upgrade condition: a second ear-training app with no ad spend breaks into any store's Education Top Grossing before 50.
Evidence
Grouped by store. Each group starts with the charts that can be graphed (real curves, data dates below the chart), then the scanner's original notes and source links.
Google Play3 evidence items · 2 products with curves
Pitch Trainer - Ear Training Ear & Pitch Training Studios LLC
Google Play · Launched 2026-06-06 · 11-07 installs 212,860
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations)
mymusic5: Sheet Music & Piano MPAG Inc
Google Play · Launched 2026-04-09 · 11-07 installs 160,091
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations). Google's detail page only refreshes install counts every other day, so a flat day doesn't mean nobody installed.
Data 2026-10-29 → 2026-11-07 (10 days, 10 observations)
- Google Play (all stores, 11-02): Pitch Trainer - Ear Training (com.eartraining.pitchtrainer, US LLC, launched 06-06) has 209,279 installs (report: 201,902), 7,961 ratings, 4.56 stars; Education Top Grossing #29 in id (report #31), and Top Free in ca #35, au #39, mx #49, us #94,10.
- Google Play (kr/jp, 11-02): the neighboring app mymusic5 파이브 (com.mpaghq.mymusicfive, sheet music + piano, 04-09) has 153,265 installs; kr Education Top Grossing #7, kr overall Top Grossing #161, tw Education #13, jp #27 (report jp #26).
- Google Play (report figures, not verified): Simply Piano / Guitar stay in the top 20 Education Top Grossing in jp, kr, vn and br; music learning is one of the few categories on Play where users are willing to pay.
App Store1 evidence items · 1 products with curves
Pitch Trainer - Ear Training Ear & Pitch Training Studios LLC
App Store · launched 2026-01-27 · US store rating 528 · charted in 11-08 of 91 stores
Data 2026-10-28 → 2026-10-30 (3 days, 3 observations). Lower rank is higher; gaps mean it wasn't charted that day
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Best rank across each day's category charts
- App Store (all stores, 11-02): Pitch Trainer (launched 6758199236,2026-01-27) charted in 89 stores with roughly 1,565 ratings combined; its Play rating count is 5× iOS's; Music Top Grossing hk #14, vn #16, th #18, nz #20.
Meta Ad Library 1 evidence items · 1 products with curves
PitchTrainer play.google.com
Meta Ad Library · running 266 ads · earliest seen running from 2026-06-28
Data 2026-11-01 → 2026-11-06 (6 days, 3 observations). Meta Ad Library tracking started 11-01; an advertiser is tracked about every 2–3 days.
- Meta Ad Library (11-01 tracked): the Page "PitchTrainer" has only 164 likes, running 249 ads (all countries combined); the earliest ad seen started running 06-28, landing on Play and the App Store. Small Page, big spend; growth is mainly paid acquisition.
Already doing it
Pitch Trainer, mymusic5, Simply Piano / Guitar (big players).
The hardest step
Acquisition. Pitch Trainer runs 249 Meta ads; whether an ear-training app with no ad spend can gain traction has no evidence yet.
Who it's for
A developer who knows music theory, 1 people; sight-singing, rhythm, chord recognition, or tuning for a particular instrument, each a small tool; subscription or one-time purchase.
Should every product builder know this?
No.
Change log
2026-11-02
Backfill check: Pitch Trainer installs 201,902 → 209,279, id Education Top Grossing #31 → #29; newly found: it runs 249 ads from a Meta Page with 164 likes, not mentioned in the report.
2026-11-01
First recorded (backfill: from Google Play New Opportunities (Batch 1) §1.10, §4.3, data as of 11-01).
Original: Scanner opportunity library #033 (updated daily, 06:00); this page was generated on the 2026-11-08 edition.