SUS4 Sketchpad: Song Ideas
Key, tempo and chords per idea
Free · In‑App Purchases
Record the idea while you still have it. Sketchpad works out its key and tempo, and keeps the lyrics, chords and takes together.
Record the idea while you still have it, and keep the lyrics, chords and takes in one place.
Sketchpad works out the key and tempo of what you sang or played.
Fully on-device: no cloud, no account.
Each sketch has a title, key, tempo, time signature, tags, lyrics, a chord list and voice notes. Pick chords from a picker (root plus quality, sus4 included) and they sit under the lyric.
• Sketches with key, tempo and time signature detected
• Lyrics, chords and voice notes together
• A chord picker with sus, add9, dim and aug
• Tags across your notebook
• Everything stored privately on your phone
For songwriters who lose ideas in the voice memos app, and bands collecting riffs between rehearsals.
Pro, or SUS4 All-Access across the whole range, adds hum-to-MIDI melody capture, chord suggestions, the lyric assistant and MIDI export.
Made in the UK by working musicians.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
SUS4 now speaks your language: the app is available in 50 languages.
Any lifetime purchase now unlocks every SUS4 app.
A clearer upgrade screen, plus fixes and polish throughout.
The developer, ThePaulSmith, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Paul Smith
- Size
- 28.6 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 43 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SUS4 Sketchpad Lifetime $59.99
- SUS4 All-Access $4.99
- SUS4 Sketchpad Pro Monthly $0.99
- Copyright
- © 2026 4chords Studios