SimpleChorusEffect vs OSE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SimpleChorusEffect
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Simple Chorus is a straightforward yet professional stereo chorus effect plugin for macOS and iOS. It delivers rich, expressive modulation sounds with an intuitive interface. Four chorus modes included: - Chorus I — Smooth, warm vintage Juno-style chorus - Chorus II — Dimension-style chorus with cross-channel mixing for natural stereo width - HiChorus — Chorus modulation applied to high frequencies only, adding brightness and sparkle - Ensemble — Multi-layered ensemble effect, ideal for classic string synthesizer sounds Key Features: - AUv3 Audio Unit compatible — works with Logic Pro, GarageBand, and other major hosts - 3 independent LFOs per mode with individual rate, depth, and phase control - High-pass filter option for HiChorus mode - 8 built-in presets Perfect for guitar, vocals, keyboards, and synthesizers.
OSE
A pocket-sized toolkit for musicians featuring a multi-touch synth, MIDI recorder, piano roll editor, tuner, metronome, and audio tools. It complements desktop Digital Audio Workstations with professional-grade DSP effects and editing capabilities.
- Expressive multi-touch synth with DSP effects
- MIDI recorder and piano roll editor
- Chromatic tuner with reference tones
- Metronome with savable presets
- Audio recorder with real-time effects
- Audio editor with restoration tools
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Not a toy. Music tools that work. OSE (Outhentic Sound Engine) is an instrument and toolkit for people who play. Synth, recorder, piano roll, metronome, tuner — eight focused tools that fit in your pocket and complement the desktop DAW you already use, rather than replace it. Everything runs on your device. PLAY • Expressive multi-touch synth with a real DSP chain — filters, envelopes and effects you hear live. • 140+ instruments and presets across keys, bass, pads, leads, plucks, drums and more. • Drum-pad, piano and split/layer layouts. • USB and Bluetooth MIDI keyboards. RECORD & EDIT • Record your playing as MIDI and arrange it in a piano-roll editor — move, quantize, transpose and edit velocity. • Audio recorder with a real-time effects monitor: hear your effects while you play. • Audio editor with restoration tools — declick, declip, denoise, normalize — plus cut, fade, speed and pitch. PRACTICE & MEASURE • Chromatic tuner — fast and accurate, with reference tones. • Metronome with simple and complex meters, subdivisions and savable presets. • Signal generator — sine and other waveforms, sweeps and a built-in timer. • Sound-level meters — SPL, FFT spectrum, spectrogram and peak hold. THE EIGHT TOOLS Synth · Recorder · Piano roll · Tuner · Metronome · Signal generator · Meters · Audio editor
Screenshots
Verdict
The clearest difference is price: OSE at Free against SimpleChorusEffect's $0.99. SimpleChorusEffect's advantage is ads (none vs shown) and device support (4 vs 2). On 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
OSE is free to download; SimpleChorusEffect costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | SimpleChorusEffect | OSE |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.9 (7 ratings) — better |
| Number of ratings | — | 7 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 81 MB |
| Age rating | 4+ | 4+ |
| Developer | Kenichi Nakamura | Outhentic EOOD |
In-app purchases
SimpleChorusEffect
No in-app purchases
OSE
No in-app purchases









