Comparison

Uber Synth vs bismark swipestrings

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

bismark swipestrings

Create expressive, fretless melodies on your mobile device using multi-touch gestures. Slide your fingers for continuous pitch control, glissandos, and vibrato. Ideal for musicians seeking a unique and organic playing experience.

Highlights
  • Fretless fingerboard simulation
  • Continuous pitch control
  • Up to 6 simultaneous strings
  • Real-time vibrato and glissando
  • CoreMIDI and Audiobus support
  • Per-string audio effects
  • Customizable synth parameters
Read full description

Play expressive, fretless melodies on your iPhone or iPad - no pick, no frets, just your fingertips. bismark swipestrings turns the multi-touch screen into a virtual fretless fingerboard. Slide your fingers to bend pitches, create smooth glissandos, and shape every note with nuance - just like a real fretless guitar or bass. Whether you're a guitarist looking for a mobile practice tool, a composer sketching melodic ideas, or a performer seeking expressive live control, swipestrings delivers a uniquely organic playing experience. --- EXPRESSIVE PERFORMANCE --- - Continuous pitch control via finger slides - Up to 6 simultaneous strings, each on its own MIDI channel - Real-time vibrato, glissando, and pitch expression - Built-in synthesizer sound included --- POWERFUL MIDI INTEGRATION --- - CoreMIDI support — connect to any MIDI-compatible app or hardware - Audiobus compatible - Send MIDI to apps like bismark bs-16i to access thousands of sounds - Each string operates independently in Mono mode - Pitch Bend Sense: 12 semitones per channel --- MIDI SPECIFICATIONS --- - MIDI Channels: 1–6 (mapped to strings 1–6) - Mono mode per channel - Pitch Bend Range: ±12 semitones --- SETTINGS & CUSTOMIZATION --- - Per-string volume, pan, reverb, chorus, delay - Attack, decay, release, cutoff, resonance (Q) - Vibrato rate, depth, and delay - Master Tune with extended range - All Fourths tuning support - Background audio & Virtual MIDI bismark swipestrings is designed for musicians who want more than buttons and keys — it's an instrument that rewards practice and expressiveness.

Screenshots

Uber Synth4 screens
bismark swipestrings4 screens

Verdict

The call

The clearest difference is review sentiment: bismark swipestrings at 100% against Uber Synth's 50%. bismark swipestrings also leads on rating (5.0 vs 2.0). Uber Synth's advantage is update cadence (every 3 months vs every 6 months) and price ($3.99 vs $5.99). On ratings volume, ads, in-app purchases and monetization model 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 bismark swipestrings $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

bismark swipestrings holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 50% of Uber Synth's written reviews are positive against 100% of bismark swipestrings's.

UpkeepUpdate frequency

Uber Synth ships an update every 3 months, bismark swipestrings every 6 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Uber Synth versus bismark swipestrings: the parameters behind the verdict, then further details
ParameterUber Synthbismark swipestrings
Price$3.99 — better$5.99
Rating2.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings12 — better
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size7 MB14 MB
Age rating4+4+
DeveloperMark Carlottobismark LLC

Customer experience

Uber Synth

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive50.0%
Neutral12.5%
Negative37.5%

bismark swipestrings

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Uber Synth

No in-app purchases

None

bismark swipestrings

No in-app purchases

Questions

Is Uber Synth free?
Uber Synth costs $3.99, with no in-app purchases.
Is bismark swipestrings free?
bismark swipestrings costs $5.99, with no in-app purchases.
Which has better reviews, Uber Synth or bismark swipestrings?
bismark swipestrings is rated higher. Uber Synth averages 2.0 out of 5 from 1 ratings, while bismark swipestrings averages 5.0 from 2 ratings.
Do Uber Synth or bismark swipestrings have ads?
Neither Uber Synth nor bismark swipestrings shows ads.
Which is updated more often, Uber Synth or bismark swipestrings?
Uber Synth ships an update every 3 months, and bismark swipestrings every 6 months. Most recently, Uber Synth was updated on November 1, 2026 and bismark swipestrings on November 3, 2026.

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