Comparison

AUFX vs SpaceFields

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

Head to head
About

AUFX

Enhance your audio with a powerful 4-band parametric stereo equalizer. Achieve subtle adjustments or dramatic sound shaping with its high-quality DSP engine and real-time frequency response visualization. Supports various audio processing methods and preset management.

Highlights
  • 4-band parametric stereo equalizer
  • High-quality 32-bit DSP engine
  • Real-time frequency response graph
  • Real-time FFT spectrum analyzer
  • Inter-App Audio and Audiobus support
  • Save, load, and share presets
  • MIDI controllable
Features
Read full description

A versatile 4-band parametric stereo equalizer for everything between subtle frequency enhancements and agressive boosting/cutting or special resonator effects. This app is part of the AUFX series, a collection of simple and powerful audio effect apps. • High quality 32-bit DSP engine. • Two parametric peak filters with gain, frequency and Q. • Low-shelf filter with gain and frequency. • High-shelf filter with gain and frequency. • Displays the resulting frequency response graph in real-time. • Real-time FFT spectrum analyzer with pre/post/off switch. • Process hardware input/output. • Process other apps through Inter-App Audio or Audiobus (input/filter/output slots supported). • Save, load and share user presets. • Supports Audiobus 2 state saving. • Comes with several bundled presets. • Fully MIDI controllable, including Virtual MIDI. • Background Audio. • Built-in lookahead limiter to prevent clipping. • Record the result directly in app. • Email recordings or export to AudioShare audio document manager app. • Access user presets and recordings through iTunes File Sharing.

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

Screenshots

AUFX4 screens
SpaceFields4 screens

Verdict

The call

The clearest difference is price: AUFX at $4.99 against SpaceFields's $10.99. AUFX also leads on iOS requirement (9.0 vs 13.4). SpaceFields's advantage is rating (4.7 vs 4.5). On review sentiment, ratings volume, update cadence and ads 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

AUFX costs $4.99 and SpaceFields $10.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SpaceFields holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 25 and 47 respectively. Written reviews point the same way: 86% of AUFX's written reviews are positive against 90% of SpaceFields's.

UpkeepUpdate frequency

AUFX ships an update every 3 months, SpaceFields every 2 months. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
AUFX versus SpaceFields: the parameters behind the verdict, then further details
ParameterAUFXSpaceFields
Price$4.99 — better$10.99
Rating4.5 (25 ratings)4.7 (47 ratings) — better
Positive reviews86.0% of reviews90.5% of reviews — better
Number of ratings2547 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.4
Further details — not scored
Size5 MB132 MB
Age rating4+4+
DeveloperKymatica ABIgor Vasiliev

Customer experience

AUFX

All ratings25 ratings
Positive88.0%
Neutral4.0%
Negative8.0%
Written reviews50 reviews
Positive86.0%
Neutral8.0%
Negative6.0%

SpaceFields

All ratings47 ratings
Positive91.5%
Neutral2.1%
Negative6.4%
Written reviews21 reviews
Positive90.5%
Neutral0.0%
Negative9.5%

In-app purchases

None

AUFX

No in-app purchases

None

SpaceFields

No in-app purchases

Questions

Is AUFX free?
AUFX costs $4.99, with no in-app purchases.
Is SpaceFields free?
SpaceFields costs $10.99, with no in-app purchases.
Which has better reviews, AUFX or SpaceFields?
SpaceFields is rated higher. AUFX averages 4.5 out of 5 from 25 ratings, while SpaceFields averages 4.7 from 47 ratings.
Do AUFX or SpaceFields have ads?
Neither AUFX nor SpaceFields shows ads.
Which is updated more often, AUFX or SpaceFields?
AUFX ships an update every 3 months, and SpaceFields every 2 months. Most recently, AUFX was updated on October 5, 2026 and SpaceFields on October 9, 2026.

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