Comparison

Elastic OSC vs Piano Effect

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

Head to head
About

Elastic OSC

This synthesizer app offers a vast array of sounds inspired by a popular Eurorack module. It features 24 distinct oscillator models, intuitive XY pads for sound manipulation, and a versatile arpeggiator. Playable via on-screen or external keyboards, it supports monophonic and polyphonic modes.

Highlights
  • 24 distinct sound engines from MI Plaits DSP
  • Intuitive XY pads for sound manipulation
  • Versatile arpeggiator with multiple modes
  • Integrated master effects (overdrive, filter, delay, reverb)
  • DX7 bank and wavetable import
  • Recordable parameter and effect automations
  • Monophonic and 8-voice polyphonic modes
Features
Currently charting
Read full description

Elastic OSC is a synthesizer app based on the DSP code of the Mutable Instruments Plaits hardware oscillator module, one of the most beloved (and cloned) oscillator modules in the Eurorack modular scene! Like the original, Elastic OSC comes with a wide variety of possible sounds, from analog-style, FM, and additive sounds to physical modeling, percussive, and even drum sounds. Elastic OSC can be used in both monophonic and 8-voice polyphonic modes. You can play the app using the (on-screen) keyboard or an external keyboard or sequencer inside your DAW of choice. The app focuses on ease of use, featuring two XY pads for intuitive sound manipulation of the OSC engine and the effects. Despite the simplicity of the cleaned-up interface, the sound possibilities are vast – thanks to 24 different oscillator models and the ability to automate parameter changes, as it is possible in all Elastic apps released so far. A versatile Arpeggiator makes it easy to start with simple ideas or can already create entire sonic worlds. Elastic OSC includes an integrated help system (tap “?”) to provide explanations for nearly every GUI element, the underlying DSP model, and most of the app’s functionality. CDM: "Elastic OSC becomes a must on iOS. It’s fun to use as an instrument in your iPad DAW of choice." SYNTH ANATOMY: "Takes the Mutable Instruments (Plaits) algorithms on a wild trip. A nearly perfect app." ROBERT LIPPOK: "Elastic OSC is incredibly fun to work with from the very first minute. The GUI is really well thought out and has 24 integrated synthesis models, as well as the ability to load DX7 sound banks. Omg, so good." --- FEATURES --- SYNTHESIZER – 24 different Sound Engines from MI Plaits DSP code – 4 main parameters per synth engine (Frequency, Harmonics, Morph, Harmo) – Recordable Modulations/Automations for almost all Parameters with a length of 1, 2 or 4 beats. – ADSR Envelope for Amplifier – LPG Envelope for Modulations of Timbre, FM, Harmonics – Adjustable Velocity effect on Volume and/or LPG Modulation – DX7 Bank and Wavetable Import ARPEGGIATOR With different Arp Modes, Rates, Octave Ranges and Skip Notes functionality MASTER FX – 5 effects (5 different Overdrive/Distortions, Hi-Low-Filter, Chorus/Flanger, Delay, Reverb) – Automations for all effects parameters – Master Gain and switchable Limiter effect SYNTH ENGINES - Virtual Analog - Waveshaping - 2 OP FM - Granular Formant - Additive - Wavetable - Chords - Speech - Granular Cloud - Filtered Noise - Particle Noise - String Model - Modal Resonator - Bass Drum - Snare Drum - Hi-Hat - Virt. Analog VCF - Phase Distortion - 6 OP FM 1 - 6 OP FM 2 - 6 OP FM 3 - Wave Terrain - String Machine - Chiptune —————— LFOs LFO 1 is for free, while three additional LFOs can be unlocked via In-App Purchase. LFO MODULATION TARGETS • Frequency Amount • Timbre Amount • Morph Amount • Harmonics Amount • Filter Amount • Pan Amount LFO MIX The MIX view enables you to blend multiple LFOs and define how strongly each active LFO influences a target parameter. The closer a target is placed to an LFO corner, the stronger its influence. All active LFOs always sum up to 100% (e.g. LFO1 50%, LFO2 30%, LFO3 20%).

About

Piano Effect

Features
Read full description

Put a song near your phone and Piano Effect tells you which keyboards are playing and what effects they use: tremolo, chorus, flanger, phaser, vibrato, Leslie, delay, reverb, drive, compression and detune. HOW IT WORKS Tap "Scan" and let the music play for 10, 20 or 30 seconds. When it finishes, the app freezes a verdict: every keyboard it found, its timbre family (electric piano, organ, synth…), its register, and the effect chain with its measured parameters — LFO rate, delay time, reverb tail. NUMBERS WITH ERROR BARS, NOT GUESSES Every measurement comes with its margin of error and its confidence level. When something cannot be measured with certainty, the app says so instead of making it up, and shows you what it doubted and why. PLAY IT YOURSELF Open the on-screen keyboard and it sounds with the chain that was just measured. Adjust every effect with its knobs, add the ones you want, and save your sounds by name. Turn the phone sideways and three octaves fit. Plug in a MIDI keyboard over USB and play it with your own hands, velocity and sustain pedal included. A SOUND LIBRARY BY GENRE 41 ready-to-play sounds: gospel, worship, neo soul, jazz, blues, bossa nova, funk, lo-fi, synthwave, 80s, pop, rock, ballad, salsa, cumbia, bachata, merengue, reggaeton, Regional Mexican and more. Plus your scans, saved with song and artist; search them and filter by genre or effect. ROLAND JUNO-DS: MAKE THE KEYBOARD SING With a JUNO-DS the app makes the keyboard itself sound: it loads its patch by number, writes the reverb, echo or chorus into it, or both. When you leave, the keyboard goes back to how it was. HONEST ABOUT ITS LIMITS The "Limits" tab explains what a phone microphone can and cannot measure over a full mix, so you know when to trust it. PRIVATE All the analysis happens on your device. Your audio is never recorded or sent anywhere, and there are no accounts. The microphone only turns on while the scan you asked for is running. NO ADS WITH PRO The free version includes advertising, which never appears during a scan. Piano Effect Pro removes it for good with a single payment, and everything that comes with it goes too: the app stops requesting ads, ad consent and tracking permission. Everything else is identical.

Screenshots

Elastic OSC4 screens
Piano Effect4 screens

Verdict

The call

The clearest difference is price: Piano Effect at Free against Elastic OSC's $17.99. Piano Effect also leads on update cadence (every 4 days vs every 2 weeks). Elastic OSC's advantage is ads (none vs shown) and chart position (#118 vs unranked). On in-app purchases 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

Piano Effect is free to download; Elastic OSC costs $17.99 up front. Elastic OSC sells 2 one-off in-app purchases and Piano Effect sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Elastic OSC ships an update every 2 weeks, Piano Effect every 4 days. The most recent releases landed on November 12, 2026 and November 10, 2026 respectively.

Scorecard5 real differences · 6 level
Elastic OSC versus Piano Effect: the parameters behind the verdict, then further details
ParameterElastic OSCPiano Effect
Price$17.99Free — better
Rating4.7 (44 ratings) — better—
Positive reviews92.9% of reviews—
Number of ratings44 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationPaid—
Best chart rank#118 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size64 MB9 MB
Age rating4+4+
DeveloperOliver Greschke (DE)Brayhan Alejandro Gabriel Guerrero

In-app purchases

2 purchases

Elastic OSC

One-time2
  • Multi LFOs$3.99
  • Unlock MPE for expressive control$4.99
1 purchases

Piano Effect

One-time1
  • Piano Effect Pro$2.99

Questions

Is Elastic OSC free?
Elastic OSC costs $17.99, and also offers in-app purchases.
Is Piano Effect free?
Piano Effect is free to download, with in-app purchases available.
Do Elastic OSC or Piano Effect have ads?
Piano Effect shows ads; Elastic OSC does not.
Which is updated more often, Elastic OSC or Piano Effect?
Elastic OSC ships an update every 2 weeks, and Piano Effect every 4 days. Most recently, Elastic OSC was updated on November 12, 2026 and Piano Effect on November 10, 2026.

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