Comparison

Uber Synth vs MRH159 Brown Sound

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

MRH159 Brown Sound

This app emulates a vintage Marshall Super Lead guitar amplifier, offering two channels and the ability to achieve the legendary 'Brown Sound' through specific modifications. It includes a recording chain emulation and noise gate, and works as a standalone app or within other audio applications.

Highlights
  • Vintage Marshall Super Lead 1959 emulation
  • Achieve 'Brown Sound' modifications
  • Two distinct channels
  • Recording chain emulation
  • Custom noise gate circuit
  • Standalone, AudioUnit v3, and Inter-App Audio support
Features
Read full description

Mrh159 Brown Sound Guitar Amplifier plugin modeled on a vintage Marshall Super Lead 1959* 100W which is arguably the most famous amp of all time. A Super Lead 100W at top two of 4 x 12 cabs is still for many players the definitive rock guitar rig. In the Mrh159 Brown Sound Guitar Amplifier plugin there is the possibility to switch to a modded Marshall Super Lead 1959* for achieve the legendary BROWN SOUND. With two channels, the Mrh159 Brown Sound Guitar Amplifier plugin gives you the tools to create your perfect tone. Channel one is voiced for a higher treble response and channel 2 for a normal response. Each channel has it’s own loudness option and two inputs. Changes on the stock amplifier for achieve the legendary BROWN SOUND: - Variac Variable Transformer to reduce the main voltage to 90V - EL34 tubes changed with 6CA7 Fat Bottle - Middle tone stack potentiometer changed to 50K ohm - Fat cap 25uF on V2 tube The Mrh159 Brown Sound guitar amplifier plugin includes a complete recording chain emulation and our custom design noise gate circuit. Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect Legal Disclaimer: Marshall Super Lead 1959 is registered trademark of Marshall Amplification Ltd. Mrh159 was developed by Nembrini Audio SRL based on its own modeling techniques. Marshall Amplification Ltd has not endorsed nor sponsored the Mrh159 in any manner, nor licensed any intellectual property for use in this product.

Screenshots

Uber Synth4 screens
MRH159 Brown Sound2 screens

Verdict

The call

The clearest difference is price: Uber Synth at $3.99 against MRH159 Brown Sound's $19.99. Uber Synth also leads on update cadence (every 3 months vs every 32 months). MRH159 Brown Sound's advantage is rating (4.3 vs 2.0) and review sentiment (75% vs 50%). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Uber Synth costs $3.99 and MRH159 Brown Sound $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MRH159 Brown Sound holds the better App Store score, 4.3 against 2.0. That said, the two scores are not equally well evidenced: MRH159 Brown Sound has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Uber Synth's written reviews are positive against 75% of MRH159 Brown Sound's.

UpkeepUpdate frequency

Uber Synth ships an update every 3 months, MRH159 Brown Sound every 32 months. The most recent releases landed on October 23, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Uber Synth versus MRH159 Brown Sound: the parameters behind the verdict, then further details
ParameterUber SynthMRH159 Brown Sound
Price$3.99 — better$19.99
Rating2.0 (1 ratings)4.3 (9 ratings) — better
Positive reviews50.0% of reviews75.0% of reviews — better
Number of ratings19 — better
Update frequencyEvery 3 months — betterEvery 32 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15
Further details — not scored
Size7 MB33 MB
Age rating4+4+
DeveloperMark CarlottoNembrini Audio

Customer experience

Uber Synth

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

MRH159 Brown Sound

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

None

Uber Synth

No in-app purchases

None

MRH159 Brown Sound

No in-app purchases

Questions

Is Uber Synth free?
Uber Synth costs $3.99, with no in-app purchases.
Is MRH159 Brown Sound free?
MRH159 Brown Sound costs $19.99, with no in-app purchases.
Which has better reviews, Uber Synth or MRH159 Brown Sound?
MRH159 Brown Sound is rated higher. Uber Synth averages 2.0 out of 5 from 1 ratings, while MRH159 Brown Sound averages 4.3 from 9 ratings.
Do Uber Synth or MRH159 Brown Sound have ads?
Neither Uber Synth nor MRH159 Brown Sound shows ads.
Which is updated more often, Uber Synth or MRH159 Brown Sound?
Uber Synth ships an update every 3 months, and MRH159 Brown Sound every 32 months. Most recently, Uber Synth was updated on October 23, 2026 and MRH159 Brown Sound on November 3, 2026.

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