Comparison

Mighty Synth Sampler vs KnobMaster

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

Head to head
About

Mighty Synth Sampler

Transform any sound into a playable instrument with this powerful synth and sampler. Create custom instruments, layer sounds, and perform with your unique audio creations. Supports SoundFonts and offers advanced synthesis features.

Highlights
  • Three-oscillator synth engine
  • 16-slot sampler with loop points
  • Audio recording and import
  • SoundFont (SF2/SFZ) support
  • AUv3 plugins for DAWs
  • Downloadable sound packs
Features
Read full description

Mighty Synth Sampler turns any sound into a playable instrument. It's a free, fully-featured synth and sampler for iPhone, iPad, and Mac built for musicians who want to create, layer, and perform with their own sounds and SoundFonts (SF2/SFZ). ROMPLERS RULE! The app is built around four pillars: • The Synth A full subtractive synth engine powered by AudioKit. Three independent oscillator layers with volume, semitone, detune, and pan controls. Shape your sound with amplitude and filter envelopes, a low-pass filter, LFO, unison, glide, drive, and more. A built-in arpeggiator, flexible play surfaces, and MIDI support round out a synth that's deep without being overwhelming. • The Sampler Build your own sample-based instruments from scratch. Record directly in the app or import audio files, map them across the keys, set loop points, adjust root notes and note ranges, and save your creations as reusable instruments and banks. • Sound Packs The app comes with a built-in starter bank and supports downloadable sound packs both free and paid. New packs are added to the store without requiring an app update. You can also create your own banks and share them with others. • AUv3 Support Four AUv3 plugins in one app: Mighty Synth (instrument), Mighty Sampler (audio effect for capturing and building instruments), Mighty Effects (standalone effects chain), and Mighty MIDI (MIDI processor and play interface). Load them individually in your favorite DAW or AUv3 host. Features • Free app with all core features included • Three-oscillator synth engine with detune, pan, and semitone control per layer • Amplitude and filter envelopes with per-oscillator scope • Low-pass filter with cutoff, resonance, and key tracking • LFO targeting filter cutoff, pitch, or volume • Unison with up to 8 voices, width, detune, and offset control • Effects: reverb, delay, chorus, drive, phaser, compressor, panner, and more • Built-in arpeggiator with BPM sync, octave range, and pattern modes • Multiple play surfaces: keys, pads, All 4ths layout, scale layout, and more • 16-slot sampler with loop points, root note mapping, and note range editing • Record audio directly in-app • Import audio files and SF2/SFZ SoundFonts • Downloadable sound packs (free and paid) • Create, export, and share your own instrument banks • Four AUv3 plugins: Mighty Synth, Mighty Sampler, Mighty Effects, Mighty MIDI • MIDI CC mapping • Available for iPhone, iPad, and Mac Thank You & Enjoy! Nick Culbertson MobyPixel.com

About

KnobMaster

Read full description

Where do you set your knobs to sound like that song? KnobMaster tells you, for the gear you actually own. Add your guitar or bass, your amp and your pedals once. Then name a song or describe the sound you're after, and ToneGenie, the AI inside KnobMaster, works out settings for every knob on your rig: gain, EQ, volume, pickup selector, effects. These are settings for your own gear, not presets for amps you don't have. KnobMaster researches the real controls of each piece of gear, so it works with practice amps, modeling amps, vintage tube amps and pedalboards alike. WHAT YOU GET • Knob-by-knob settings for any song, on your rig • Guitar and bass • Several rigs, switch between them in a tap • A library of every tone you've made • Playing tips for each song • 26 languages KNOBMASTER PRO Your first tone is free. Every tone after it needs Pro, and the yearly plan starts with a free week. • 200 tone generations a month • Precision Mode: analyze an MP3 of the song itself • Add gear by taking a photo of it • Unlimited gear Settings are AI-generated starting points: trust your ears and fine-tune from there. Terms of Use: https://knobmastr.com/terms Privacy: https://knobmastr.com/privacy

Screenshots

Mighty Synth Sampler4 screens
KnobMaster4 screens

Verdict

The call

Mighty Synth Sampler and KnobMaster are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. Mighty Synth Sampler sells 3 one-off in-app purchases and KnobMaster sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mighty Synth Sampler ships an update fortnightly, KnobMaster every 2 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

ScorecardNo meaningful differences
Mighty Synth Sampler versus KnobMaster: the parameters behind the verdict, then further details
ParameterMighty Synth SamplerKnobMaster
PriceFreeFree
Rating4.8 (48 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings48 — better—
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size158 MB40 MB
Age rating4+4+
DeveloperMoby PixelLancelot Martin

In-app purchases

3 purchases

Mighty Synth Sampler

One-time3
  • Vintage Synth Sound Pack$4.99
  • Super Chiptune Sound Pack$4.99
  • Tape Drift Sound Pack$4.99
3 purchases

KnobMaster

Subscriptions3
  • KnobMaster Pro Monthly$6.991 Month
  • KnobMaster Pro 6 Months$34.996 Months
  • KnobMaster Pro Yearly7 Days trial$39.991 Year

Questions

Is Mighty Synth Sampler free?
Mighty Synth Sampler is free to download, with in-app purchases available.
Is KnobMaster free?
KnobMaster is free to download, with in-app purchases available.
Do Mighty Synth Sampler or KnobMaster have ads?
Neither Mighty Synth Sampler nor KnobMaster shows ads.
Which is updated more often, Mighty Synth Sampler or KnobMaster?
Mighty Synth Sampler ships an update fortnightly, and KnobMaster every 2 weeks. Most recently, Mighty Synth Sampler was updated on October 27, 2026 and KnobMaster on October 28, 2026.

Other comparisons