Comparison

SpaceFields vs Know the Notes

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

Head to head
About

SpaceFields

Create evolving rhythmic soundscapes from any audio source. This app uses a loop-based system with dual loops, pitch shifting, and effects to generate ambient textures and rhythmic structures. Experiment with complex sound design using intuitive controls and randomization.

Highlights
  • Loop-based sound mangling
  • Dual loop recorder
  • Pitch shifting and effects
  • Convolution reverb with deep spaces
  • Rhythmic structure generation
  • Automation generators with randomization
  • Live and sample processing modes
Features
Read full description

Loop-based mangler effect to create slowly changing rhythmic sound structures in deep reverb space from any external sources or samples. Great for experimenting and designing ambient and noise backgrounds with rhythmic elements. The principle of the application is quite simple. It is based on a loop recorder with two loops. When one loop is recorded, the second is played back. When the loop recording stops, there is a smooth transition between them. Three separate outputs can playback the recorded loop with different pitches (speeds), each with its own effects and two automation generators. The mix of these outputs is fed to the convolution reverb. The reverb is packed with a set of long and deep sound spaces that create a blurry and ambient sound. But the main feature of this application is its well designed parameters that make it easy to experiment with a huge number of sound options using any source material from live instruments to synthesized sound. With just two parameters you can add complex rhythmic structures based on Euclidean rhythms, and easy-to-use automation generators with a randomize option to add variations to the sound, allowing you to modify parameters like an LFO or based on a given rhythm. The convolution reverb has advanced options with which you can change and extend the original reverb spaces. Even using the randomization options, in almost every case, you will get interesting and various soundscapes and textures. With these options it is very easy to create the basis for new unique presets. It only takes a little tweaking of some parameters to get impressive results. The loop recorder can be started and stopped manually or by input signal, can use fixed length or overwrite the loop while recording, and has the option for crossfade between the end and the beginning of the loop. All this makes it convenient for live use as well as when processing recorded material. As an extended option, you can use a special mode in which the application works as a direct effect, without the loop recorder. The special mode sampler is designed for quickly load samples and easy control of the application when used it live. This panel contains the input and output controls, essential controls of the loop recorder, and a large area with a recording counter, which is also used to start/stop the recorder. You can assign up to nine samples for fast loading into the loop, as well as save a recorded loop as a sample and to an external file. SpaceFields is a universal application for iOS and macOS. It can work on iPhone and iPad as well as Mac / MacBook with M1 chip (and later). SpaceFields works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, with supports Audiobus host app. On MacOS, SpaceFields can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. All application features are available on iOS and macOS, including MIDI support (with a MIDI learn option), audio unit parameters and importing samples from any directory on device. SpaceFields has a built-in detailed description of all parameters also available as PDF file on the application site. Demos and previews: https://www.youtube.com/watch?v=cL1Dis3u0AQ https://www.youtube.com/watch?v=TpkWkc5I0uE https://www.youtube.com/watch?v=74LyfDM2dQM You can find more information on SpaceFields and other creative audio apps at: https://motion-soundscape.blogspot.com

About

Know the Notes

Features
Read full description

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!

Screenshots

SpaceFields4 screens
Know the Notes3 screens

Verdict

The call

The clearest difference is price: Know the Notes at $1.99 against SpaceFields's $10.99. Know the Notes also leads on update cadence (fortnightly vs every 2 months). SpaceFields's advantage is iOS requirement (13.4 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

CostPrice · In-app purchases · Ads · Monetization

SpaceFields costs $10.99 and Know the Notes $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SpaceFields ships an update every 2 months, Know the Notes fortnightly. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
SpaceFields versus Know the Notes: the parameters behind the verdict, then further details
ParameterSpaceFieldsKnow the Notes
Price$10.99$1.99 — better
Rating4.7 (47 ratings) — better—
Positive reviews90.5% of reviews—
Number of ratings47 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 — better15.1
Further details — not scored
Size132 MB26 MB
Age rating4+4+
DeveloperIgor VasilievDAVID MAYR LERNER

In-app purchases

None

SpaceFields

No in-app purchases

None

Know the Notes

No in-app purchases

Questions

Is SpaceFields free?
SpaceFields costs $10.99, with no in-app purchases.
Is Know the Notes free?
Know the Notes costs $1.99, with no in-app purchases.
Do SpaceFields or Know the Notes have ads?
Neither SpaceFields nor Know the Notes shows ads.
Which is updated more often, SpaceFields or Know the Notes?
SpaceFields ships an update every 2 months, and Know the Notes fortnightly. Most recently, SpaceFields was updated on November 11, 2026 and Know the Notes on November 5, 2026.

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