Pitchmaster vs RK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pitchmaster
This music practice app offers a precise chromatic tuner, metronome, and tone generator. It features advanced signal analysis and supports various tuning systems and waveforms for all instruments and voices.
- Precise chromatic tuner
- Metronome with customizable time signatures
- Tone generator with multiple waveforms
- Drone mode for intonation practice
- Advanced signal analysis
- Support for Equal Temperament and Just Intonation
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Pitchmaster - Professional Tuner, Metronome & Tone Generator Originally written for my own use with saxophone and clarinet, Pitchmaster is now the ultimate all-in-one music practice companion. Whether you're tuning your instrument, practicing with a metronome, training your ear, or working on your sound, Pitchmaster has you covered. - TUNER Precise chromatic tuner with visual feedback, accurate down to 32 Hz. Covers the range from bass to piccolo. See your pitch in real-time with cents accuracy. Supports Equal Temperament and Just Intonation tuning systems. - DRONE MODE Practice intonation against a reference tone. Perfect for developing your ear and improving pitch accuracy on any instrument. Use with headphones. - TONE GENERATOR Generate reference tones at any pitch. Choose from sinusoidal, square, triangular, or sawtooth waveforms. Adjust the reference A4 frequency from 415-466 Hz. - METRONOME Jitter-free, sample-accurate metronome with: • 40-240 BPM range • Customizable time signatures (1-7 beats, 2/4/8 subdivisions) • Beat subdivisions: eighth notes, triplets, sixteenth notes • Tap tempo for quick BPM setting • Visual beat indicators - ANALYZER Advanced signal analysis showing: • Stroboscopic tuner • Real-time waveform display • Frequency spectrum visualization • Pitch stability indicator • Signal amplitude and clarity meters Features: - Beautiful dark theme with modern UI - Support for Equal Temperament & Just Intonation - Adjustable reference pitch (A4 = 415-466 Hz) - Works with all instruments and voices - No ads, no subscriptions
RK
Manage your RK006 Master Hub with this app. Design and save configurations, set up presets for event filtering, clock processing, and output modes. Connect your iOS device to MIDI, CV/Gate, and control it from your DAW.
- RK006 Master Hub management
- MIDI, CV/Gate control
- Preset design and saving
- Event filtering
- Clock processing
- Output mode configuration
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This is the manager-app for the RK006 Master Hub. The RK006 features a 12 bus(yes, 12x16 channel MIDI Handling) MIDI Interface and and ultra stable MIDI clock generator. It can MIDI merge from it's two TRS-A MIDI Inputs and even add four self-hosted USBMIDI devices to the stream. It is able to connect your iOS device not only to MIDI but also act as a CV/Gate source with control straight from your DAW. Add extensive MIDI filters and even built-in polychaining to make this the go-to tool for any setup. This app is an iOS port from the online webMIDI portal. It allows you to design and save configurations in the RK006. Via this app you can setup presets which can handle event filtering, clock processing and RK006 port output modes (MIDI/Gate/CV) Some review snippets: "The RK006 is a game changer, making sync, MIDI and signal processing easy, even without a DAW." (juno.co.uk) "Retrokits prove themselves invaluable once again to our increasingly complex and confusing desktop hardware setups." (gearnews.com) "Incredibly versatile hub for MIDI, USB and modular, and probably the only MIDI interface you’ll ever need in or out of the studio." (Sound on Sound)
Screenshots
Verdict
The clearest difference is review sentiment: RK at 67% against Pitchmaster's 13%. RK also leads on price (Free vs $0.99) and rating (5.0 vs 1.0). On update cadence, ads, 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
RK is free to download; Pitchmaster costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RK holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: RK has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 13% of Pitchmaster's written reviews are positive against 67% of RK's.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on August 31, 2026 and July 31, 2026 respectively.
| Parameter | Pitchmaster | RK |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) | 5.0 (9 ratings) — better |
| Positive reviews | 12.5% of reviews | 66.7% of reviews — better |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 32 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Geilich | Gerrit Dijkstra |
Customer experience
Pitchmaster
RK
In-app purchases
Pitchmaster
No in-app purchases
RK
No in-app purchases









