Comparison

Uber Synth vs Spectrum AUv3 FFT Visualizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Spectrum AUv3 FFT Visualizer

Features
Read full description

Turn sound into stunning visuals with Spectrum, an AUv3-compatible real-time spectrum analyzer for audio signals. Effortlessly monitor 29 specific frequencies from 10 Hz to 20 kHz with precision, powered by Fast Fourier Transform (FFT) data. Spectrum’s sleek graphics feature vertical markers, filled paths, and a smooth gradient background for an immersive visual experience. Enjoy accurate frequency placement with logarithmic scaling, and interact seamlessly using touch to highlight specific frequencies. Designed for performance, it dynamically adjusts to real-time data, transforms decibels, and ensures smooth, optimized rendering for flawless updates.

Screenshots

Uber Synth4 screens
Spectrum AUv3 FFT Visualizer2 screens

Verdict

The call

The clearest difference is update cadence: Uber Synth at every 3 months against Spectrum AUv3 FFT Visualizer's every 12 months. Spectrum AUv3 FFT Visualizer's advantage is price ($0.99 vs $3.99). On ads, in-app purchases, 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

CostPrice · In-app purchases · Ads · Monetization

Uber Synth costs $3.99 and Spectrum AUv3 FFT Visualizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Uber Synth ships an update every 3 months, Spectrum AUv3 FFT Visualizer every 12 months. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Uber Synth versus Spectrum AUv3 FFT Visualizer: the parameters behind the verdict, then further details
ParameterUber SynthSpectrum AUv3 FFT Visualizer
Price$3.99$0.99 — better
Rating2.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size7 MB10 MB
Age rating4+4+
DeveloperMark CarlottoDiscoDSP LLC

In-app purchases

None

Uber Synth

No in-app purchases

None

Spectrum AUv3 FFT Visualizer

No in-app purchases

Questions

Is Uber Synth free?
Uber Synth costs $3.99, with no in-app purchases.
Is Spectrum AUv3 FFT Visualizer free?
Spectrum AUv3 FFT Visualizer costs $0.99, with no in-app purchases.
Do Uber Synth or Spectrum AUv3 FFT Visualizer have ads?
Neither Uber Synth nor Spectrum AUv3 FFT Visualizer shows ads.
Which is updated more often, Uber Synth or Spectrum AUv3 FFT Visualizer?
Uber Synth ships an update every 3 months, and Spectrum AUv3 FFT Visualizer every 12 months. Most recently, Uber Synth was updated on November 1, 2026 and Spectrum AUv3 FFT Visualizer on October 27, 2026.

Other comparisons