Comparison

SynthStamp vs Kombinat4

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

Head to head
About

SynthStamp

Explore vintage synthesizers with fully modeled engines and familiar interfaces. Patch, save, and share your creations across devices. Features real-time effects processing and models based on iconic hardware.

Highlights
  • Fully modeled vintage synth engines
  • Patchable semi-modular synthesizer
  • Circuit-bendable sampling keyboard
  • Real-time effects processing
  • Audio Unit (AUv3) plugin support
  • Cross-device preset sharing
Features
Read full description

The Vintage Synth Playground You Can Take Anywhere SynthStamp is a celebration of the history of electronic music, featuring fully modeled engines and familiar user interfaces behind some of the most desirable synthesizers. Tap and drag to patch, save your patch as a preset, and export presets to share across all of your devices including Mac, iPhone, and iPad. Yes that's right, iPhone. Take your sound anywhere. --- Stereo audio input for realtime effects processing Model based on the ARP 2600--finally on mobile Circuit-bendable model based on the SK-1--we haven't seen one either --- Choose Your Adventure 5001 Analog Synthesizer: dynamically patchable, semi-modular, monophonic analog synthesizer from the late '70s, with stereo preamplifier. A real idea factory, from classic analog synth leads to creative sound design, this synth is a tool for exploration and experimentation. You'll truly fall in love with the snappy, milky quality of the voltage-controlled filter. B500 Sampling Keyboard: circuit-bendable ROMpler from the mid '80s, with 4-voice polyphony, multi-channel note memory, and stereo sampler. Bend, sample, and compose melodies with this portable gem. Combine with continuous live sampling to create sounds that simply shouldn't exist. Flexibly Configurable, Infinitely Creative SynthStamp can be run as a standalone application or as an Audio Unit (AUv3) plugin inside supported DAWs, either as an Instrument with mono side chain input, or as a Music Effect on stereo/mono audio tracks for realtime processing, with full MIDI support. Presets can be imported and exported for easy sharing across devices, while on the same device, presets are stored in a common location across standalone and Audio Unit installations for shared access. Privacy Policy: https://themusicologygroup.com/privacy/

About

Kombinat4

This audio plugin allows users to split sounds into up to eight frequency bands and apply one of 38 distortion engines to each. It offers parallel multiband processing or serial chaining of distortion effects for complex sound design. Includes a comprehensive output section with filters, compression, and feedback.

Highlights
  • Up to eight frequency bands
  • 38 distinct distortion engines
  • Multiband and serial processing modes
  • Advanced output filter section
  • Built-in compressor with sidechain
  • Global feedback path with envelope
  • AUv3 plugin and standalone app
Features
Read full description

KOMBINAT4 is Audio Damage's fourth-generation flagship distortion. Take any sound, split it into up to eight frequency bands, and assign one of 38 distortion engines to each band. Or flip to Serial mode and chain those eight engines end-to-end for stacked, cascading mayhem. THIRTY-EIGHT DISTORTION ENGINES The complete roster from Kombinat Tri returns: Fuzz, Saturate, Distort, Clip, Warp, Degrade, Ring Mod, X Noise, Octaver, Wavy, Rectify, Tube Clip, and the famously unhinged Nerd Rage. Joining them is the entire engine set from our Grind distortion: Tanh, Asym Tanh, Overdrive, Polynomial, Linear Distort, Sine Drive, Var Hard Clip, Gloubi Boulga, MXR, Soft Clip, and Cubic NLD. Plus thirteen brand-new algorithms built specifically for Kombinat4: Wavefold, Chebyshev, Bitwise, Slew Limit, Comparator, Diode Clip, Feedback FM, Fractal, Dropout, Shapeshift, Phase Distortion, Stutter, and Erosion. Every engine has up to three custom-labeled controls plus per-band gain and solo. Pick a different engine for each band and design distortion tones that simply weren't available before. EIGHT BANDS, TWO MODES In Multiband mode, the input is split by Linkwitz-Riley crossovers into up to eight parallel bands. Each band gets its own engine and gain stage, and everything recombines at the output. Drop to two bands for classic low/high splits, push to eight for full-spectrum surgical distortion design, and solo any band to dial it in cleanly. In Serial mode, those same eight slots become a chain — every engine processes the full-bandwidth signal in turn, for layered drive structures impossible to achieve with a single algorithm. OUTPUT SECTION A dedicated output filter with twelve types: 2-pole and 4-pole low-pass, high-pass, and band-pass shapes, a notch, three OTA-style filters, a 914-style ladder bandpass, our Filterpod, and bypass. Built-in Rough Rider compressor at the output with sidechain HPF and external sidechain input. Global feedback path with attack and decay envelope for self-oscillating screams and slow-blooming sustain. Optional AGC for level-matched A/B comparisons across heavy distortion settings. DC blocker. 2x and 4x oversampling for clean high-frequency content. PRESETS AND WORKFLOW Factory preset library covering subtle saturation, mix-bus enhancement, mid-range fattening, lead guitar tones, low-end mangling, full-on industrial destruction, and everything in between. Folder-based user preset browser with favorites and import/export of single presets or full folders as ZIP. XML preset compatibility with the desktop edition — your iOS presets work in your DAW and vice versa. AUv3 plugin for iOS hosts including GarageBand, Logic Pro for iPad, AUM, Cubasis, Loopy Pro, Audiobus, drambo, BeatMaker 3, and others. Standalone app included. Tooltips on every control. Animated band display with realtime spectrum overlay. No DRM, no account, no online activation.

Screenshots

SynthStamp4 screens
Kombinat44 screens

Verdict

The call

The clearest difference is rating: Kombinat4 at 5.0 against SynthStamp's 4.4. Kombinat4 also leads on review sentiment (67% vs 50%) and iOS requirement (12.0 vs 16.0). SynthStamp's advantage is price ($4.99 vs $7.99). On ratings volume, update cadence, ads and in-app purchases 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

SynthStamp costs $4.99 and Kombinat4 $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Kombinat4 holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 12 and 10 respectively. Written reviews point the same way: 50% of SynthStamp's written reviews are positive against 67% of Kombinat4's.

UpkeepUpdate frequency

SynthStamp ships an update every 5 days, Kombinat4 every 3 days. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
SynthStamp versus Kombinat4: the parameters behind the verdict, then further details
ParameterSynthStampKombinat4
Price$4.99 — better$7.99
Rating4.4 (12 ratings)5.0 (10 ratings) — better
Positive reviews50.0% of reviews66.7% of reviews — better
Number of ratings12 — better10
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.012.0 — better
Further details — not scored
Size39 MB32 MB
Age rating4+4+
DeveloperThe Musicology Group, Inc.Audio Damage, Inc.

Customer experience

SynthStamp

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews14 reviews
Positive50.0%
Neutral14.3%
Negative35.7%

Kombinat4

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

SynthStamp

No in-app purchases

None

Kombinat4

No in-app purchases

Questions

Is SynthStamp free?
SynthStamp costs $4.99, with no in-app purchases.
Is Kombinat4 free?
Kombinat4 costs $7.99, with no in-app purchases.
Which has better reviews, SynthStamp or Kombinat4?
Kombinat4 is rated higher. SynthStamp averages 4.4 out of 5 from 12 ratings, while Kombinat4 averages 5.0 from 10 ratings.
Do SynthStamp or Kombinat4 have ads?
Neither SynthStamp nor Kombinat4 shows ads.
Which is updated more often, SynthStamp or Kombinat4?
SynthStamp ships an update every 5 days, and Kombinat4 every 3 days. Most recently, SynthStamp was updated on September 18, 2026 and Kombinat4 on September 17, 2026.

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