Comparison

PianoDisc Calibrate vs bOTP

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

Head to head
About

PianoDisc Calibrate

This utility app allows professional installers to calibrate automatic player pianos equipped with specific systems. It provides access to detailed settings for keys, pedals, and volume controls, streamlining the setup process for trained technicians.

Highlights
  • Key calibration
  • Pedal settings
  • Volume control adjustment
  • Firmware updates
  • MIDI interface compatibility
  • SilentDrive HD settings
Features
Read full description

PianoDisc Calibrate is a companion app for automatic player pianos equipped with Prodigy player systems.  The app allows professional PianoDisc installers to calibrate key features and settings faster and easier than ever before. PLEASE NOTE:  This app is designed to be used by professional installers who have completed the PianoDisc installation training program.  Improper adjustment is not covered under warranty, and may adversely affect playback. [Requirements] A hardware MIDI interface is required (such as the Prodigy CPU, Roland UM-ONE Mk II, or Quicco Sound mi.1).  MIDI IN and OUT must both be connected to the SilentDrive HD CPU. NOTE: The MIDI interface must be connected before you launch the app! Settings are only adjusted when the MIDI indicator is green. If the indicator remains red, try pressing the reset button on the SilentDrive CPU. [SilentDrive Settings] * Key Hold Force * Power Offset * Individual Key Calibration (Learn) * Pedal Strike Force * Pedal Hold Force * Pedal Drop Time * Minimum Note Duration * Springless Solenoids * Note Release Control (NRC) * Pedal Release Control (PRC) * Firmware Update (for CPUs manufactured in 2015 or later; the mi.1 cannot be used for firmware updates) [iQ Settings] * Music Player Volume Range * Piano Volume Range * Accompaniment Volume Range * Sync Range * Manual/Automatic Volume * Much more

About

bOTP

This utility generates one-time passwords for secure authentication. It supports multiple profiles and stores secrets securely on the device's keychain, making them inaccessible after setup. Passwords can be easily copied to the clipboard for quick use.

Highlights
  • Easy to use interface
  • Multiple profile support
  • Secure secret storage on keychain
  • Secrets are hidden and inaccessible
  • One-time passwords copied to clipboard
Features
Read full description

An easy to use implementation of Mobile One Time Passwords (Mobile-OTP) see http://motp.sourceforge.net Features: * easy to use * multiple profiles/secrets * arc4random based secret generator * secrets are stored on a keychain * secrets are hidden (once stored, there is no supported way to read them) * one time passwords are copied to the clipboard

Screenshots

PianoDisc Calibrate4 screens
bOTP4 screens

Verdict

The call

The clearest difference is review sentiment: PianoDisc Calibrate at 100% against bOTP's 0%. PianoDisc Calibrate also leads on update cadence (every 6 weeks vs every 29 months). bOTP's advantage is in-app purchases (none vs 1). On price, ads, monetization model 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. PianoDisc Calibrate sells 1 one-off in-app purchase. bOTP asks for nothing beyond the download.

UpkeepUpdate frequency

PianoDisc Calibrate ships an update every 6 weeks, bOTP every 29 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 7 level
PianoDisc Calibrate versus bOTP: the parameters behind the verdict, then further details
ParameterPianoDisc CalibratebOTP
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 6 weeks — betterEvery 29 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better13.4
Further details — not scored
Size62 MB3 MB
Age rating4+4+
DeveloperBurgett Inc.Alexander Hausner

Customer experience

PianoDisc Calibrate

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

bOTP

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

PianoDisc Calibrate

One-time1
  • Activation Region Key$999.99
None

bOTP

No in-app purchases

Questions

Is PianoDisc Calibrate free?
PianoDisc Calibrate is free to download, with in-app purchases available.
Is bOTP free?
bOTP is free to download, with no in-app purchases.
Do PianoDisc Calibrate or bOTP have ads?
Neither PianoDisc Calibrate nor bOTP shows ads.
Which is updated more often, PianoDisc Calibrate or bOTP?
PianoDisc Calibrate ships an update every 6 weeks, and bOTP every 29 months. Most recently, PianoDisc Calibrate was updated on October 24, 2026 and bOTP on October 20, 2026.

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