Uber Synth vs TerribleSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Uber Synth
This app offers a polyphonic multi-timbral FM synthesizer for iOS devices. It features a triple-oscillator sound engine with five distinct multi-timbral options for creating evolving and complex soundscapes. Supports Audiobus for integration with other music apps.
- Polyphonic multi-timbral FM synthesizer
- Triple-oscillator cross-modulated FM engine
- Five multi-timbral options
- Sound map and sound palettes
- Evolving sound generation
- Audiobus support
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Uber Synth is a polyphonic multi-timbral frequency modulated (FM) synthesizer that runs on any iOS device. The underlying sound engine is based on the triple-oscillator cross-modulated FM synthesizer first introduced in our xMod app. Uber Synth provides five multi-timbral options: 1) Mix the sounds of any two sound patches, 2) combine patches using the sound map, 3) Generate specified as well as randomized sound palettes across the keyboard, 4) Specify a region in sound space centered on a sound and move a point by a variable randomized amount within the region each time you play a note to create an evolving mix of the center sound and the sound nearest the point. 5) Do the same as above moving the point automatically at a specified rate. Supports Audiobus.
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.
Screenshots
Verdict
The clearest difference is price: TerribleSync at Free against Uber Synth's $3.99. TerribleSync also leads on rating (4.0 vs 2.0) and review sentiment (83% vs 50%). Uber Synth's advantage is update cadence (every 3 months vs every 35 months). 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; Uber Synth costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TerribleSync holds the better App Store score, 4.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 50% of Uber Synth's written reviews are positive against 83% of TerribleSync's.
Uber Synth ships an update every 3 months, TerribleSync every 35 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.
| Parameter | Uber Synth | TerribleSync |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 2.0 (1 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | 50.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 3 months — better | Every 35 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Carlotto | Benjamin Roth |
Customer experience
Uber Synth
TerribleSync
In-app purchases
Uber Synth
No in-app purchases
TerribleSync
No in-app purchases
Questions
Is Uber Synth free?
Is TerribleSync free?
Which has better reviews, Uber Synth or TerribleSync?
Do Uber Synth or TerribleSync have ads?
Which is updated more often, Uber Synth or TerribleSync?
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