Comparison

Piano Level vs Harmonix OTC

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

Head to head

About

Piano Level

Features

Read full description

Check your piano playing level and evaluate with a score

About

Harmonix OTC

Features

Read full description

This app helps users manage and use their hearing aid devices more easily.

Screenshots

Piano Level1 screens

Harmonix OTC4 screens

Verdict

The call

The clearest difference is ads: Harmonix OTC at none against Piano Level's shown. Harmonix OTC also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (11.0 vs 15.8.3). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Piano Level ships an update every 2 weeks, Harmonix OTC every 2 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 3 level

Piano Level versus Harmonix OTC: the parameters behind the verdict, then further details
Parameter	Piano Level	Harmonix OTC
Price	Free	Free
Update frequency	Every 2 weeks	Every 2 days — better
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	15.8.3	11.0 — better
Further details — not scored
Size	35 MB	128 MB
Age rating	4+	17+
Developer	Hideaki Uchikoshi	Huizhou Jinghao Medical Technology Co.,Ltd.

In-app purchases

None

Piano Level

No in-app purchases

None

Harmonix OTC

No in-app purchases

Questions

Is Piano Level free?

Piano Level is free to download, with no in-app purchases.

Is Harmonix OTC free?

Harmonix OTC is free to download, with no in-app purchases.

Do Piano Level or Harmonix OTC have ads?

Piano Level shows ads; Harmonix OTC does not.

Which is updated more often, Piano Level or Harmonix OTC?

Piano Level ships an update every 2 weeks, and Harmonix OTC every 2 days. Most recently, Piano Level was updated on October 25, 2026 and Harmonix OTC on October 28, 2026.