Tuner Pro vs PianoKeys Learn

Tuner Pro — Precision and Simplicity in Music Tuning. This app turns your phone into a reliable tuning fork and a handy metronome. Just open it, select your desired frequency or rhythm, and start playing. FREE FEATURES: • Tuning Fork in Your Pocket: A pure, classic tuning fork sound for tuning vocals and instruments. • Standard Tuning: Accurate A440 Hz frequency always available. • Simple Interface: Intuitive controls and a minimalist design. • Day and Night Modes: Comfortable to use in any lighting condition. TUNER PRO (Subscription or Lifetime): Unlock the full power of the app with these professional tools: • Professional Metronome: A range of 20–240 BPM with support for various time signatures (2/4, 3/4, 4/4, 6/8). • Extended Frequencies: Access popular historical and alternative frequencies like A415 Hz, A432 Hz, and A444 Hz. • Color Themes: Customize the look of your tuner to match your style. WHO IS THIS APP FOR? - Vocalists who need a quick and reliable tuning fork. - Musicians tuning their instruments before a rehearsal or concert. - Students of music schools and conservatories. - Anyone who values precision and convenience in music. WHY TUNER PRO? - No internet required. - Does not collect personal data. - Runs fast and stable on any device. - Simply Tuner combines tradition with modernity — a classic tuning fork and a digital metronome, always at your fingertips.

PianoKeys is an offline piano and chord-study tool built for learners who value precision, speed, and clean design. SYNTHESIZED AUDIO ENGINE PianoKeys uses a custom AVAudioEngine-based synthesizer with 8-voice polyphony and exponential decay envelopes. Every note is generated on-device in real time — no audio samples, no network dependency, zero latency. COMPLETE CHORD LIBRARY 21 chords across three categories: - 7 Major triads (C, D, E, F, G, A, B) - 7 Minor triads (Cm, Dm, Em, Fm, Gm, Am, Bm) - 7 Dominant 7th chords (C7, D7, E7, F7, G7, A7, B7) Each chord card shows the chord symbol and full name, plays all intervals simultaneously, and highlights the constituent keys on the keyboard display. PIANO KEYBOARD Scrollable 2-octave keyboard spanning C2–C5. White and black keys respond to touch with spring animation and haptic feedback. Pressed keys are highlighted with accent color in real time. PRACTICE ANALYTICS - Daily session count - All-time total plays - Top 5 most-played chords by frequency All data is persisted via UserDefaults — no account, no server, no tracking. TECHNICAL SPECIFICATIONS - Platform: iOS 16+, iPhone Only - Audio: AVAudioEngine, 44100 Hz, 8-voice polyphony - Localization: English, Simplified Chinese - Storage: UserDefaults (local only) - Network: None required Delete the app to permanently remove all practice data.