Oscidia vs Know the Notes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oscidia
This powerful synthesizer app allows iOS users to create a vast array of sounds using multiple oscillators, wavetable synthesis, and advanced modulation options. It features a versatile sequencer with independent arpeggiators and built-in effects for complex sound design.
- 3 Oscillators Per Voice
- Wavetable & Additive Synthesis
- Morphing & Warping Wavetables
- 5 Morphable Filter Types
- 3 Independent Arpeggiators
- Mod Matrix
- Internal Effects Suite
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Oscidia is an AUv3 plugin for iOS which can be loaded into your favorite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of WaveTable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds. Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the WaveTable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too. Oscidia also supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for some really complex rhythms to be created that are not tied to pitch. Oscidia Features: • 3 Oscillators Per Voice. • Support for Wavetable and Additive synthesis. • WaveTable supports Morph and Warp (Phase Distortion) features. • 4 LFOs Per Voice. • 5 Filter types with 12/24-bit slopes and morphable LP/BP/HP. • 4 ADSR (Attack, Decay, Sustain, Release ) or FEG (Fluid Envelope Generators). • Wave Folding is available for basic waveforms such as SINE and TRIANGLE. • OSC Sync. • XMod & Ring Mod (on osc1 & osc2). • Additive Synthesis for glass, metallic and bell like tones. • Build in Sequencer (with 3 independent ARPs). • Mod Matrix. • MPE Mode. • Internal Effects - reverb, delay, chorus, Haas, and Phaser effects. • Drag and Drop for import and export presets and wavetables. • Build in Help Manual.
Know the Notes
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Unlock your musical potential with Know the Notes, the ultimate ear training companion for musicians of all levels. Whether you're a beginner learning to identify notes or an advanced player refining your pitch, our app offers a responsive simple to use practice environment. Realistic Audio Experience Forget static, low-quality samples. Know Your Notes uses advanced real-time audio synthesis to generate sounds instantly. Piano: Rich, synthesized piano tones. Guitar: Plucked strings using the Karplus-Strong algorithm. Tone: Pure sine waves for focused frequency training. Practice Mode: Freely explore notes on an interactive keyboard with immediate visual feedback. Track your streaks and improve at your own pace. Quiz Mode: Test your skills with customizable quizzes. Choose your quiz length and difficulty. Delayed Feedback enhances real ear-training exams by hiding results until the end of the quiz. Customizable and Learning Difficulty Control: Toggle sharps and flats (black keys) to match your skill level. Settings: Adjust quiz lengths and feedback styles to suit your learning preference. Stop guessing and start knowing. Download Know Your Notes and tune your ear today!
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Verdict
The clearest difference is price: Know the Notes at $1.99 against Oscidia's $7.99. Know the Notes also leads on update cadence (fortnightly vs every 6 weeks). Oscidia's advantage is iOS requirement (13 vs 15.1). On ads, 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
Oscidia costs $7.99 and Know the Notes $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Oscidia ships an update every 6 weeks, Know the Notes fortnightly. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.
| Parameter | Oscidia | Know the Notes |
|---|---|---|
| Price | $7.99 | $1.99 — better |
| Rating | 5.0 (12 ratings) — better | — |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 6 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 — better | 15.1 |
| Further details — not scored | ||
| Size | 168 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | DAVID MAYR LERNER |
In-app purchases
Oscidia
No in-app purchases
Know the Notes
No in-app purchases
Questions
Is Oscidia free?
Is Know the Notes free?
Do Oscidia or Know the Notes have ads?
Which is updated more often, Oscidia or Know the Notes?
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