Comparison

Metric Flow vs Windtone by Sonofield

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

Head to head
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.

About

Windtone by Sonofield

This app offers a meditative ear training experience for musicians. It generates endless wind-chime melodies based on chosen scales, with adjustable complexity and real-time note labels. Enjoy a relaxing practice environment with natural ambiences and a tonic reference.

Highlights
  • Scale degree recognition
  • Over 30 preset scales
  • Real-time note labels
  • Adjustable melodic complexity
  • Natural background ambiences
  • Tonic reference chime
  • Playable chimes
Features
Read full description

Windtone is a meditative ear training app for musicians who want to develop scale degree recognition. Simply choose a scale, relax, and tune in to an endless stream of gentle wind-chime melodies. Features: - Over 30 preset scales, sorted by family or mood - Real-time note labels: scale degrees, solfege, or letter names - Wind-gust inspired melody generation - Four levels of melodic complexity - Relaxing natural background ambiences - Tonic reference chime to keep your ear anchored - Playable chimes you can tap and strum - No user tracking - No ads - Free forever Windtone is a unique and immersive ear training experience that you can adapt to match your ability level. Its calming interface and pristine sounds create the perfect space for relaxed practice and extended training sessions. Listen while you work, walk, or wind-down at night.

Screenshots

Metric Flow4 screens
Windtone by Sonofield4 screens

Verdict

The call

The clearest difference is price: Windtone by Sonofield at Free against Metric Flow's $9.99. Windtone by Sonofield also leads on update cadence (every 5 days vs every 9 months) and rating (4.9 vs 4.7). On review sentiment, ratings volume, ads and 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

CostPrice · In-app purchases · Ads · Monetization

Windtone by Sonofield is free to download; Metric Flow costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Windtone by Sonofield holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 7 and 15 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Metric Flow ships an update every 9 months, Windtone by Sonofield every 5 days. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 5 level
Metric Flow versus Windtone by Sonofield: the parameters behind the verdict, then further details
ParameterMetric FlowWindtone by Sonofield
Price$9.99Free — better
Rating4.7 (7 ratings)4.9 (15 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings715 — better
Update frequencyEvery 9 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.515.0 — better
Further details — not scored
Size58 MB29 MB
Age rating4+4+
DeveloperThomas QuayleSonofield Ear Trainer Education Ltd.

Customer experience

Metric Flow

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

Windtone by Sonofield

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Metric Flow

No in-app purchases

None

Windtone by Sonofield

No in-app purchases

Questions

Is Metric Flow free?
Metric Flow costs $9.99, with no in-app purchases.
Is Windtone by Sonofield free?
Windtone by Sonofield is free to download, with no in-app purchases.
Which has better reviews, Metric Flow or Windtone by Sonofield?
Windtone by Sonofield is rated higher. Metric Flow averages 4.7 out of 5 from 7 ratings, while Windtone by Sonofield averages 4.9 from 15 ratings.
Do Metric Flow or Windtone by Sonofield have ads?
Neither Metric Flow nor Windtone by Sonofield shows ads.
Which is updated more often, Metric Flow or Windtone by Sonofield?
Metric Flow ships an update every 9 months, and Windtone by Sonofield every 5 days. Most recently, Metric Flow was updated on September 18, 2026 and Windtone by Sonofield on September 23, 2026.

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