VoicingWorkout vs Feel Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VoicingWorkout
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VoicingWorkout is an iOS app for music learning and training. With your iPad and a MIDI keyboard, it teaches the bedrock of pop & jazz piano: chord voicings. Fast-track your ear and muscle memory so you can hear and play any chord instantly. Inside the app you’ll find: 1.Ear Training for Notes: Graduated from easy to advanced. 2.Chord-voicing drills: Learn the sound and the inner voices of every chord. 3.Chord progression workouts: Master smooth transitions between chords in R&B, Funk, Jazz & Neo-Soul styles. Perfect for every keyboard student or producer. Best of all: no sheet music required. Everything is played entirely by ear. Use it as a daily trainer—or simply browse the chord library, audition progressions and spark your next idea.
Feel Sync
This music app enhances keyboard playing by syncing your performance with built-in or imported songs. It offers real-time harmonic feedback and lyric display for an immersive musical experience, even for beginners. Enjoy a curated selection of tracks or play along to your own audio files.
- Syncs with keyboard for real-time playing
- Includes 70 built-in popular songs
- Import and play along with local audio files
- Lyric display for singing along
- Intuitive and easy-to-use interface
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This app is designed exclusively for use with the compatible CT-FS1. The app can be used via a Bluetooth® connection using the Wireless MIDI & Audio Adaptor WU-BT10 (included with the CT-FS1). About Feel Sync “Feel Sync” is the latest evolution in musical immersion from CASIO that lets anyone play in harmony from the first touch of the keyboard. Begin by playing a song stored on your device using this Feel Sync app, then just follow along with the rhythm and play the keys however feels natural to you, anyway you like. Explore New Ways to Play using Feel Sync ●Play Along with the Music You Love “Add a Song” from within the app and select a music file stored on your smart device. You can enjoy the feeling of performing as if you were part of your favorite band or playing alongside your favorite artist, just by playing in time with the tempo of your favorite song. Note: Feel Sync requires the use of music files that have been stored on your device. The supported file formats are WAV, AIFF, and MP3. Streaming services, which includes but is not limited to subscription-based services, are not supported by Feel Sync. ●Add Your Own Accompaniment and Sing Along "Add your own accompaniments for you to sing along to! You can do this by playing the keyboard along to an instrumental track or one that doesn’t feature vocals. Enjoy singing and playing along to your own unique accompaniment!" ●Play Together, Your Own Way You can use one half of the keyboard as a Feel Sync “zone” while the other half can be kept for standard playing. This allows experienced players and those who have never played a keyboard before to enjoy performing together to the same song. Using the app expands the ways you can engage with music and express yourself through performance.
Screenshots
Verdict
The clearest difference is in-app purchases: Feel Sync at none against VoicingWorkout's 1. VoicingWorkout's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement 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
Both are free to download. VoicingWorkout sells 1 one-off in-app purchase. Feel Sync asks for nothing beyond the download.
VoicingWorkout ships an update every 3 weeks, Feel Sync every 2 months. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.
| Parameter | VoicingWorkout | Feel Sync |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 42 MB | 165 MB |
| Age rating | 4+ | 4+ |
| Developer | 涛 李 | CASIO COMPUTER CO., LTD. |
In-app purchases
VoicingWorkout
- VoicingWorkout Pro Version$8.99
Feel Sync
No in-app purchases









