PianoKeys Learn vs Retro Pocket Synth

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.

Turn your iPad or iPhone into a stylish retro pocket synthesizer. Retro Pocket Synth combines a playable 24-note keyboard with expressive sound controls, visual feedback, and a collection of classic-inspired designs. Tap or glide across the keys to create melodies, experiment with sound, and enjoy a unique instrument designed for quick musical exploration. Features: • Play a responsive 24-note virtual keyboard • Shape your sound with Envelope, LFO, Delay, and Filter controls • Adjust volume with dedicated controls • Enjoy animated speaker feedback while playing • Record your performances with a countdown timer • Save, play, manage, and share your recordings • Choose from Classic, Modern Cyberpunk, Polished Wood, and Retro Orange themes • Customize the stylus with colorful skins • Enable haptic feedback for a more tactile playing experience • Use built-in presets to quickly explore different sounds Whether you are creating a melody, experimenting with synth tones, or simply looking for a fun musical instrument, Retro Pocket Synth brings a compact studio-inspired experience to your pocket. No musical experience required. Just play, create, and enjoy.