Pepp vs Mellowsound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pepp
Create electronic music with an intuitive rhythm and harmony engine, no prior musical knowledge required. Design unique sounds, save loops, and mix them live. Sync with other apps and hardware for expanded creative possibilities.
- Intelligent rhythm and harmony engine
- Twisted groovebox/arpeggiator/synthesizer
- Sixteen sliders and 16-step sequencer
- 160 memory slots for loops
- MIDI sync and sequencing
- Audiobus integration
- Ten synth and five drum oscillators
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"I love the spirit behind the concept. Definitely taking advantage of what can be designed these days. The fact that the controls have influence on each other makes for an extremely wide range of possible textures." -Geoff White "A lot of the musical automata apps out there sound like cheap cheese. This is gourmet cheese." -MuzikAppJunkie Pepp opens up the joy of electronic music making to everyone. Thanks to an intelligent rythm and harmony engine, no musical knowledge is needed. Pepp is immediate, intuitive and vastly musical by nature. Make electronic music like there's nothing to it! Pepp is very easy to use yet it can produce a vast range of sounds. Forget about boring factory sounds. Come up with your own mindbending loops in no time, store them in memory slots, mix them live and jam with your friends. Tweak all parameters to the extreme without destroying your original loops. This twisted groovebox/arpeggiator/synthesizer lets you quickly forge original electronic music using sixteen sliders and a sixteen step sequencer. Instantly save and recall your ideas without missing a beat. With 160 memory slots you're not likely to run out of storage. Pepp can also be synced via MIDI, played live from a MIDI keyboard or sequenced from your favorite DAW. Naturally, all sliders can be mapped to midi controllers. Pepp is also integrated with Audiobus so you can use it with all of your audiobus compatible apps! FEATURES AT A GLANCE Ten synth oscillators Five drum oscillators FM-synthesis Audiobus MIDI Clock in MIDI in (Notes and CC) MIDI Latch/Gate Intelligent arpeggiator Advanced rythm engine Lo-/Hi-pass Filter w/ Resonance Delay Samle and hold Instant resample/reloop Detune Portamento Reverb Gain Glissando Master octave +-2 Tempo multiplier Record and share loops via mail or SMS OSCILLATOR TYPES Sine Square Sawtooth Triangle Wavetable Noise LIMITATIONS Some key features are disabled in this FREE version of Pepp. The full version of Pepp can be unlocked from within the app by using in-app purchase. Been working hard for a long time to create Pepp. I hope you enjoy it and appreciate your support!
Mellowsound
Experience the iconic sounds of a 1960s keyboard sampler with this app. It offers professional audio quality, allowing you to play vintage orchestra sounds on your device. Customize your sound with various effects and recording options.
- Authentic Mellotron emulation
- Professional 16-bit/44.1Khz audio
- Photo-realistic user interface
- Blend mode for two instruments
- MIDI and Audio Unit support
- In-app purchases for more instruments and FX
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Play the iconic Mellotron keyboard sampler heard on The Beatles, Radiohead and King Crimson records — now on your iPhone, iPad & Mac. Mellowsound is built from real recordings of our own Mellotron M400, sampled note by note across all instrument tapes. Every sound is authentic, every detail is preserved. Professional audio quality — 16bit / 44.1kHz Photo-realistic vintage interface AUv3 Audio Unit — plug into any DAW or AUM FREE VERSION includes: • 3 instruments: Flute, Clarinet & Sax • Blend mode: play two instruments simultaneously • Full Mixer, Metronome • MIDI & MIDI Mapping • AudioBus & Inter-App Audio (iOS) FULL VERSION (IAP) includes: • 18 Mellotron instruments: Strings, Piano, Flute, Guitar, Vibraphone and more • User Presets • ADSR Envelope • 6 FX: Tube Amp, Tremolo, Chorus, Pitch-shifter, Delay & Reverb • Live Recording CHAMBERLIN PACK (IAP) includes: • 18 additional instruments: Brass, Pizzicato Violins, Cello, Harpsichord and more Questions or feedback? We'd love to hear from you: contact@fingerlab.net Stay tuned! The Fingerlab Team
Screenshots
Verdict
The clearest difference is review sentiment: Mellowsound at 60% against Pepp's 29%. Mellowsound also leads on update cadence (every 4 weeks vs every 6 months) and ratings volume (237 vs 5). Pepp's advantage is rating (4.6 vs 4.3) and iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and monetization model 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
Both are free to download. Pepp sells 1 one-off in-app purchase and Mellowsound sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Pepp holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Mellowsound has 237 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 29% of Pepp's written reviews are positive against 60% of Mellowsound's, so the app with the better star average is not the one people write more warmly about.
Pepp ships an update every 6 months, Mellowsound every 4 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Pepp | Mellowsound |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | 4.3 (237 ratings) |
| Positive reviews | 29.2% of reviews | 60.5% of reviews — better |
| Number of ratings | 5 | 237 — better |
| Update frequency | Every 6 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 7.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 899 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrik Hedmalm | Fingerlab |
Customer experience
Pepp
Mellowsound
Bugs and requests
Pepp
Not enough reviews yet to summarise bugs or requests.
Mellowsound
Reported bugs
3 issues- Incompatibility with some iOS versions and devices
- Issues with Inter-App Audio and AUv3 functionality
- Keyboard not responsive or disappearing
Requested features
5 requests- Ability to blend/layer multiple instruments
- Expanded sound library with more Mellotron presets
- Sustain pedal support
- MIDI channel selection
- Improved performance in DAWs
In-app purchases
Pepp
- Unlock Pepp$4.99
Mellowsound
- Chamberlin Instruments Pack$8.99
- Full Version$9.99









