Comparison

strng vs Shoom Synthesizer

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

Head to head
About

strng

This app generates plucked string sounds using a physical modeling synthesis engine. It offers polyphonic voices, a built-in keyboard, and MIDI control. Shape your sound with delay and resonant filters, and integrate with other music apps.

Highlights
  • Physical modeling string synthesis
  • 16 voice polyphony
  • Built-in 25-key keyboard with aftertouch
  • MIDI controller support (USB/Wi-Fi)
  • Stereo ping-pong delay
  • Two-channel resonant filter with LFOs
  • Audiobus, IAA, and AUv3 support
Features
Read full description

Strng is a string synthesiser inspired by the karplus-strong algorithm. The physical modelling starts with a short burst of noise that then guided by a tuned delay buffer and string tension filter, generates plucked string like sounds. No samples are used. Strng is 16 voice polyphonic and can be controlled with an in app 25 key chromatic keyboard or connect prefered midi controller through USB or Wifi. To further shape the sound two post effects are available, a ping-pong stereo delay and two channel resonant filter controlled by two LFOs. Connect to other apps through AudioBus, inter app audio or load in DAWs as AUv3. +++ String synthesis engine +++ 16 voice polyphonic +++ Audiobus, IAA and AUv3 +++ Core MIDI, bluetooth midi and limited MPE +++ 25 multitouch keyboard with aftertouch control +++ Factory presets, save and load your own settings, drag'n drop from files app +++ Aftertouch modulation for attack, sustain, bit crush, resonant filter and detune lfo +++ Stereo ping-pong delay +++ Two channel resonant low pass filter LFOs

About

Shoom Synthesizer

This app is an audio playground featuring three identical synthesizers controlled by an expressive XY pad. It offers a wide pitch range and supports various scales, including microtonal options. Advanced features include MIDI input, extensive modulation sources, and built-in effects for creative sound design.

Highlights
  • Three independent synthesizers
  • Expressive XY pad control
  • Microtonal and xenharmonic scale support
  • MIDI note input (MPE)
  • Extensive modulation sources
  • Built-in stereo delay and reverb
Read full description

Shoom is an expressive XY pad synthesizer. Or, more precisely, three identical synthesizers in one app. It is capable of playing any pitch in the audible range and doesn’t necessarily limit you to a particular scale. Nevertheless, if you do want to use scales, Shoom can deliver anything from common 12-tone equal tempered to xenharmonic and microtonal. Features: • Three independent synthesizers • 8–20,000 Hz pitch range • Slide freely or snap notes to scale with adjustable glide rate • Set notes to infinite hold using a dedicated toggle • Microtonal and non-octave repeating scales support • MIDI note input (including MPE), CC control and clock sync • Optional remapping of MIDI notes to the pitches of the selected scale • Bluetooth MIDI support • Inter-App Audio support with main mix and individual synth outputs • Audiobus 3 support (including AB MIDI) • Ableton Link support • 120+ bundled presets • Import and export of presets and CC maps Synthesizer engine features: • Adjustable polyphony, up to 30 voices • Two oscillators with 4 waveforms and PWM, and one noise generator • Oscillator FM cross-modulation • 4 pole (24 dB/octave) resonant low pass filter with overdrive and pitch tracking • 2 variable slope ADSR envelopes for amplitude and filter cutoff • 2 LFOs with 9 waveforms, up to 3 out of 12 simultaneously assignable parameters, trigger and global running modes, fade-in and phase controls • Y-axis position / MIDI CC#74 as modulation source with up to 3 of 15 simultaneously assignable parameters • MIDI channel pressure / polyphonic aftertouch as modulation source with up to 3 of 15 simultaneously assignable parameters • MIDI velocity modulation of amplitude and filter envelopes • Note pan randomizer • Built-in stereo delay and reverb effects

Screenshots

strng4 screens

Verdict

The call

The clearest difference is update cadence: strng at every 4 months against Shoom Synthesizer's every 13 months. strng also leads on price ($4.99 vs $6.99) and device support (3 vs 1). On rating, review sentiment, ratings volume and ads 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

strng costs $4.99 and Shoom Synthesizer $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for strng against 4.9 for Shoom Synthesizer. Both are backed by a comparable volume of ratings — 35 and 64 respectively. Written reviews are what separate them: 84% of strng's written reviews are positive against 87% of Shoom Synthesizer's.

UpkeepUpdate frequency

strng ships an update every 4 months, Shoom Synthesizer every 13 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
strng versus Shoom Synthesizer: the parameters behind the verdict, then further details
ParameterstrngShoom Synthesizer
Price$4.99 — better$6.99
Rating4.7 (35 ratings)4.9 (64 ratings) — better
Positive reviews84.4% of reviews86.7% of reviews — better
Number of ratings3564 — better
Update frequencyEvery 4 months — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS9.09.0
Further details — not scored
Size4 MB16 MB
Age rating4+4+
DeveloperErik SigthYuri Turov

Customer experience

strng

All ratings35 ratings
Positive88.6%
Neutral8.6%
Negative2.9%
Written reviews32 reviews
Positive84.4%
Neutral9.4%
Negative6.3%

Shoom Synthesizer

All ratings62 ratings
Positive96.8%
Neutral1.6%
Negative1.6%
Written reviews60 reviews
Positive86.7%
Neutral8.3%
Negative5.0%

Bugs and requests

strng

Not enough reviews yet to summarise bugs or requests.

Shoom Synthesizer

Reported bugs

4 issues
  • Bugs encountered
  • Slight sensitivity issues
  • Quality loss when recording to AudioShare
  • Problem with background audio

Requested features

15 requests
  • AUV3 support
  • Multichannel AUV3 version
  • MIDI out functionality
  • MIDI note input
  • Record movements feature
Show 10 more
  • Play all 3 synth layers simultaneously with one finger movement
  • Arpeggiator
  • Sequencer
  • More LFOs
  • Additional effects
  • Expanded modulation routing
  • Free LFO
  • Full screen mode for performance
  • Cut audio switch
  • Respond to MIDI bank and program changes

In-app purchases

None

strng

No in-app purchases

None

Shoom Synthesizer

No in-app purchases

Questions

Is strng free?
strng costs $4.99, with no in-app purchases.
Is Shoom Synthesizer free?
Shoom Synthesizer costs $6.99, with no in-app purchases.
Which has better reviews, strng or Shoom Synthesizer?
Shoom Synthesizer is rated higher. strng averages 4.7 out of 5 from 35 ratings, while Shoom Synthesizer averages 4.9 from 64 ratings.
Do strng or Shoom Synthesizer have ads?
Neither strng nor Shoom Synthesizer shows ads.
Which is updated more often, strng or Shoom Synthesizer?
strng ships an update every 4 months, and Shoom Synthesizer every 13 months. Most recently, strng was updated on October 24, 2026 and Shoom Synthesizer on October 29, 2026.

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