TerribleSync vs Continuo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TerribleSync
Control the tempo of music hardware like synthesizers and drum machines using your iPhone or iPad. Features include tap tempo, precise dial adjustment, and buttons for performance effects. Requires a 3.5mm audio cable for connection.
- Tap tempo
- Rotary tempo dial
- Pause/mute button
- Performance effect buttons
- Clear interface
- Open source project
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Use your iPhone or iPad to control the tempo of impulse-sync-enabled synthesizers, drum machines, and other music hardware. Features: • Tap tempo • Supports 20.0 - 999.0+ BPM • Rotary tempo dial for precise, tactile tempo adjustment • Pause/mute button • ?, !, and :fire: buttons to introduce character and chaos into your performance • Clear, simple interface designed to be easy to use in a stage/performance setting This app works with any instrument you own that takes voltage impulses as a tempo control, such as: • KORG SQ-1, Volca, Monotribe, etc. • Teenage Engineering Pocket Operator • Moog MOTHER-32 (choose the "single clock advance" setting on the instrument) This project is open source. Try building it yourself at https://github.com/terribleben/terrible-sync or contact twitter.com/terribleben with feedback! Notes: • 3.5mm audio cable is required to connect your iPhone or iPad to your sync-enabled instruments. • If the instrument isn't responding, you may need to increase the iPhone's volume. • This software is not produced by, endorsed by, or affiliated with KORG, Teenage Engineering, Moog Music, or other instrument manufacturers.
Continuo
Generate basslines based on chord progressions. Input your chords, select a style, and the app creates a bassline that follows your changes. Offers multiple instruments, time signatures, and export options.
- Chord-based bassline generation
- Multiple musical styles
- Various bass instrument options
- Support for any time signature
- MIDI and MusicXML export
- Offline functionality
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Type the changes. Get the bassline. Most bassline tools ask you for a scale. Continuo asks for your chords. Type a progression — slash chords and all — pick a style, and Continuo writes a line that actually plays those changes: chord tones on the strong beats, approach notes into the next chord, and a register that sits where a bass player would sit. HOW IT WORKS • Type your changes one bar at a time, separated by | — or start from one of 18 built-in sets: 12-bar blues, rhythm changes, ii-V-I, doo-wop, montuno vamp, bossa turnaround, 7/8 vamp and more. • Slash chords like Am/C pin the bass note, so the line plays exactly what you wrote. • Pick a style, then shape it: Density (sparse to busy), Motion (plain roots to passing and chromatic tones), and Swing (straight to triplet). • Tap Next take to cycle through ranked alternatives, best first. Tap any chord in the strip to swap, move, or stretch it — the line rewrites around your edit. • Undo steps back over anything that changed the line — an edit, a preset, an import, a take, even a slider. WHAT'S INSIDE • Seven styles: root and fifth, walking, funk/R&B, tumbao, bossa nova, reggae one-drop, and Motown. • Seven instruments that change what gets played, not just the tone: 4-, 5- and 6-string bass guitar, upright, 808/sub, synth bass, and chiptune. • Any time signature — 4/4, 3/4, 6/8, 9/8, 12/8, 5/4, 7/8, 5/8, 11/8 and more. Every style works in every meter. • Import changes from a MIDI or MusicXML file. • MIDI export, optionally with a reference chord track — plus MusicXML with chord symbols for MuseScore, Sibelius, Dorico, and Finale. • A bass-clef notation preview with chord symbols. • Fully offline. No account, no sign-in, no ads, no in-app purchases. • Private by design — Continuo collects nothing. Your music never leaves your device unless you export it. Continuo is by Songdeed. Pairs with Mediant, our chord-progression app.
Screenshots
Verdict
The clearest difference is price: TerribleSync at Free against Continuo's $4.99. TerribleSync also leads on iOS requirement (12.0 vs 15.0). On 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
TerribleSync is free to download; Continuo costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | TerribleSync | Continuo |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 35 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Benjamin Roth | EVAN TRACEN POWERS |
In-app purchases
TerribleSync
No in-app purchases
Continuo
No in-app purchases









