Uber Synth vs MRH159 Brown Sound
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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Uber Synth | MRH159 Brown Sound |
|---|---|---|
| Price | $3.99 — better | $19.99 |
| Rating | 2.0 (1 ratings) | 4.3 (9 ratings) — better |
| Positive reviews | 50.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 3 months — better | Every 32 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15 |
| Further details — not scored | ||
| Size | 7 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Carlotto | Nembrini Audio |
Customer experience
Uber Synth
MRH159 Brown Sound
In-app purchases
Uber Synth
No in-app purchases
MRH159 Brown Sound
No in-app purchases
Questions
Is Uber Synth free?
Is MRH159 Brown Sound free?
Which has better reviews, Uber Synth or MRH159 Brown Sound?
Do Uber Synth or MRH159 Brown Sound have ads?
Which is updated more often, Uber Synth or MRH159 Brown Sound?
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