Comparison

Oscidia vs Metric Flow

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

Head to head
About

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.

Highlights
  • 3 Oscillators Per Voice
  • Wavetable & Additive Synthesis
  • Morphing & Warping Wavetables
  • 5 Morphable Filter Types
  • 3 Independent Arpeggiators
  • Mod Matrix
  • Internal Effects Suite
Features
Read full description

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.

About

Metric Flow

Generate endless rhythmic patterns for improvisation practice. Visualize rhythms without traditional notation and customize them with advanced options. Export rhythms as audio files for use in DAWs.

Highlights
  • Endless rhythm generation
  • Visual rhythm representation
  • Customizable rhythm patterns
  • Audio export (WAV, AAC)
  • Supports complex time signatures
  • Built-in drone synthesizer
Features
Read full description

Supercharge Your Rhythm Skills and Build Your Rhythmic Vocabulary with Metric Flow! Practice improvising, develop rhythmic accuracy, build your rhythmic vocabulary and become inspired with an endless supply of rhythms, whilst working on your phrasing and rhythmic control. Generate Endless Rhythms with Ease Metric Flow automatically creates one-bar rhythm patterns in your chosen time signature, providing a versatile improvisation practice tool for developing your rhythmic vocabulary and control. The app supports many common, odd, and complex time signatures, including polymetric overlays such as 7/8 or 5/16 over 4/4, helping you master phrasing across the barline and expand your modern rhythmic vocabulary. Simply tap the ‘Generate Rhythm’ button for a new pattern, then press ‘Play’ to listen at your selected tempo. Adjust the speed using the tempo slider or tap tempo feature, ranging from 40 to 200 BPM. Visual Rhythm Representation with Standard Notation or Timeline Views Metric Flow shows your randomly generated rhythms using beautifully rendered, animated standard musical notation. Practice your rhythm sight reading at the same time as developing your rhythmic vocabulary! Alternatively, the intuitive ‘Timeline View’ employs animated dots to visually depict your rhythms based on 16th note and triplet subdivisions. This visual approach eliminates the need for reading traditional notation; downbeats are clearly marked for each time signature and update in real time, even with complex polyrhythms or tied notes extending over bar lines. This makes understanding note and rest durations straightforward and accessible, fostering ear training and internalization of rhythmic patterns without prior music theory knowledge. Rhythmic Customization Options Metric Flow offers sophisticated customization features that allow you to refine the randomly generated rhythms. These options provide greater control and flexibility, enabling you to tailor rhythms to suit your practice level and compositional needs. Creative Rhythm Variations & Audio Export You can tap directly on the rhythm visualization to cycle the rhythm elements around through the bar, giving you many variations of a single loop. Alternatively, tap the arrow icon above the rhythm to shift the whole rhythm forwards by one 16th note, exploring every permutation of that rhythm throughout the bar and create phrases that cross over the barline. Once you find a rhythm you like, tap the heart icon to save it to your favorites, or export a single, perfect cycle as a WAV or AAC file. These exported loops can be shared or stored on your device, complete with tempo information for seamless synchronization in your DAW with backing tracks, drum patterns or even in your compositions. You could even combine multiple, single exported loops in different time signatures to create complex rhythms that cross over the barline and expand your creativity in any genre. Enhanced Practice Features Metric Flow enhances your practice sessions with a built-in drone synthesizer pad for harmonic support and an optional 16th note swing to add groove and feel to your rhythms. Save your favourite rhythms to practice with later or use them as inspiration for writing melodies, riffs and songs. These features help develop your timing, feel, and musicality in an engaging and effective manner. Designed by world-renowned guitarist Tom Quayle – co-creator of best-selling music app 'Solo - Fretboard Visualization'. Works on iOS, iPadOS and MacOS.

Screenshots

Oscidia4 screens
Metric Flow4 screens

Verdict

The call

The clearest difference is update cadence: Oscidia at monthly against Metric Flow's every 9 months. Oscidia also leads on rating (5.0 vs 4.7) and iOS requirement (13 vs 17.5). Metric Flow's advantage is price ($9.99 vs $14.99) and review sentiment (100% vs 88%). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Oscidia costs $14.99 and Metric Flow $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Oscidia holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 11 and 7 respectively. Written reviews complicate that: 88% of Oscidia's written reviews are positive against 100% of Metric Flow's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Oscidia ships an update monthly, Metric Flow every 9 months. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Oscidia versus Metric Flow: the parameters behind the verdict, then further details
ParameterOscidiaMetric Flow
Price$14.99$9.99 — better
Rating5.0 (11 ratings) — better4.7 (7 ratings)
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings11 — better7
Update frequencyMonthly — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better17.5
Further details — not scored
Size168 MB58 MB
Age rating4+4+
Developer4Pockets.comThomas Quayle

Customer experience

Oscidia

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral12.5%
Negative0.0%

Metric Flow

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Oscidia

No in-app purchases

None

Metric Flow

No in-app purchases

Questions

Is Oscidia free?
Oscidia costs $14.99, with no in-app purchases.
Is Metric Flow free?
Metric Flow costs $9.99, with no in-app purchases.
Which has better reviews, Oscidia or Metric Flow?
Oscidia is rated higher. Oscidia averages 5.0 out of 5 from 11 ratings, while Metric Flow averages 4.7 from 7 ratings.
Do Oscidia or Metric Flow have ads?
Neither Oscidia nor Metric Flow shows ads.
Which is updated more often, Oscidia or Metric Flow?
Oscidia ships an update monthly, and Metric Flow every 9 months. Most recently, Oscidia was updated on September 21, 2026 and Metric Flow on September 18, 2026.

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