Elastic OSC vs Timeless Reverb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elastic OSC
This synthesizer app offers a vast range of sounds inspired by a popular hardware module. It features 24 distinct oscillator models, intuitive XY pads for sound manipulation, and a versatile arpeggiator. Play it with an on-screen or external keyboard for monophonic or polyphonic sound design.
- 24 distinct sound engines based on Plaits DSP
- Intuitive XY pads for sound manipulation
- Versatile arpeggiator with multiple modes
- Integrated help system for all features
- DX7 bank and wavetable import
- 5 master effects with automations
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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%).
Timeless Reverb
Experience the rich, metallic resonance of classic plate reverb with advanced physical modeling. This app offers full control over size, material, and sensor positions, plus parallel or series spring reverb options for unique character. Sculpt lush textures with freeze and shimmer controls, ideal for modern producers and sound designers.
- Physically modeled plate reverb
- Adjustable size, material, and mic placement
- Parallel or series spring reverb
- Shimmer and freeze controls
- Frequency-dependent damping
- Preset manager
- MIDI Learn
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Love the sound of vintage plate reverb but don’t have the space — or the steel — to install one? We've got you covered. Our advanced physical modeling engine faithfully recreates the rich, metallic resonance of a classic plate, with full control over size, material, sensor and exciter positions, and damping behavior. Want more character? Run a spring reverb in parallel or series — a modern remake of our original Devil Spring, now streamlined for performance. And for modern producers, ambient creators, and sound designers: freeze and shimmer controls let you sculpt lush textures instantly. One reverb. Endless personality. Features - Physically modeled plate reverb with adjustable size, material, and mic placement - Frequency-dependent damping curve for natural-sounding decay - 38 handpicked spring reverb IRs — cleaned and studio-ready - Built-in shimmer and freeze controls for cinematic ambience - High-efficiency convolution engine optimized for low CPU usage - Preset manager to save, recall, and organize your favorite sounds - MIDI Learn for seamless control from your hardware - Automatic stereo/mono handling — perfect for tracks or the master bus - Dedicated tone shaping for both plate and spring reverbs
Screenshots
Verdict
The clearest difference is in-app purchases: Timeless Reverb at none against Elastic OSC's 2. Timeless Reverb also leads on price ($8.99 vs $14.99) and rating (5.0 vs 4.7). Elastic OSC's advantage is ratings volume (41 vs 2) and device support (3 vs 1). On ads, monetization model and iOS requirement 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
Elastic OSC costs $14.99 and Timeless Reverb $8.99 up front. Elastic OSC sells 2 one-off in-app purchases. Timeless Reverb asks for nothing beyond the download.
Timeless Reverb holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Elastic OSC has 41 ratings behind it against 2, so its average is the more settled of the two.
| Parameter | Elastic OSC | Timeless Reverb |
|---|---|---|
| Price | $14.99 | $8.99 — better |
| Rating | 4.7 (41 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 92.3% of reviews | — |
| Number of ratings | 41 — better | 2 |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 58 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Oliver Greschke (DE) | Julien Faure |
Customer experience
Elastic OSC
Timeless Reverb
In-app purchases
Elastic OSC
- Multi LFOs$3.99
- Unlock MPE for expressive control$4.99
Timeless Reverb
No in-app purchases









