Comparison

AUFX vs tardigrain

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

Head to head
About

AUFX

This app offers a versatile stereo delay audio effect with extensive customization options. It can produce a wide range of sounds, from clean digital delays to gritty dub echoes and flangers. The app supports processing external audio and other applications, with features for saving and sharing presets.

Highlights
  • High quality 32-bit DSP engine
  • Tape simulation (noise and warble)
  • Filters in the delay loop
  • Stereo delay, detune, and ping-pong
  • Dual LFO for modulation
  • Inter-App Audio and Audiobus support
  • Save, load, and share presets
Features
Read full description

A highly tweakable stereo delay audio effect, suitable for everything from clean digital delays to filthy dub echoes, flangers and broken cassette tapes. This app is part of the AUFX series, a collection of simple and powerful audio effect apps. • High quality 32-bit DSP engine. • A multitude of parameters to tweak to get a wide range of sounds. • Tape simulation (noise and warble). • Filters in the delay loop for typical dub sound. • Stereo delay, stereo detune, ping-pong delay. • Sinewave and random dual LFO for flangers and other modulations. • 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 Audiobus2 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

tardigrain

Create unique sounds by breaking down samples into small fragments and playing them back non-linearly. Explore granular synthesis with adjustable grain size, direction, and step size. Enhance your audio with built-in effects, filters, and modulation options.

Highlights
  • Granular synthesis engine
  • Adjustable grain parameters
  • Built-in effects (reverb, wave shaper, crush)
  • Resonant filter
  • MIDI and MPE modulation
  • Sequencer/arpeggiator
  • LFO modulation
Features
Read full description

Tardigrain is a granular synthesiser for iOS that runs standalone or as an AU plugin. Sounds are created by taking smaller fragments of a sample and playing them back in a non linear fashion, with settings for grain size, direction, step size and more. Process the sound further through effects like reverb, wave shaper and sample crush. Tardigrain supports connections with AudioCopy, AudioBus, Inter App Audio and AUv3. Plus all audio parameters can be modulated by MIDI, as AU parameters and by aftertouch on the build in keyboard. Now also a selected set of parameters can be modulated by LFOs och notes triggered by a new sequencer/arpeggiator. +++ Record your own samples or import using AudioCopy/drag'n drop +++ Chromatic granualar playpack +++ Effects (Wave shaper, Reverb, Sample crusher, Pitch and stereo spread) +++ Resonant filter (low, band and high pass) +++ Keyboard and MPE modulation of any audio parameters +++ Note trigger sequencer/arpeggiator +++ 4 LFO sources for modulating a selected set of parameters +++ Multiple factory presets to get you started +++ Save and load your own settings and samples +++ Inter App Audio, AudioBus and AUv3 +++ Core MIDI, Inter App Audio MIDI and AUv3 MIDI

Screenshots

AUFX4 screens
tardigrain4 screens

Verdict

The call

AUFX and tardigrain both sit at 4.6 stars, but that hides the real split: 90% of AUFX's written reviews are positive against 76% of tardigrain's. AUFX also leads on price ($4.99 vs $5.99) and iOS requirement (9.0 vs 11.0). On rating, 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 tardigrain $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for AUFX against 4.6 for tardigrain. Both are backed by a comparable volume of ratings — 33 and 98 respectively. Written reviews are what separate them: 90% of AUFX's written reviews are positive against 76% of tardigrain's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 21, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
AUFX versus tardigrain: the parameters behind the verdict, then further details
ParameterAUFXtardigrain
Price$4.99 — better$5.99
Rating4.6 (33 ratings) — better4.6 (98 ratings)
Positive reviews89.7% of reviews — better75.9% of reviews
Number of ratings3398 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better11.0
Further details — not scored
Size6 MB60 MB
Age rating4+4+
DeveloperKymatica ABErik Sigth

Customer experience

AUFX

All ratings33 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews68 reviews
Positive89.7%
Neutral1.5%
Negative8.8%

tardigrain

All ratings96 ratings
Positive88.5%
Neutral4.2%
Negative7.3%
Written reviews87 reviews
Positive75.9%
Neutral9.2%
Negative14.9%

Bugs and requests

AUFX

Reported bugs

4 issues
  • Crashes when loading presets
  • Loading presets causes crash
  • Will NOT launch in AUM
  • Workarounds don't work

Requested features

10 requests
  • AUv3 support
  • Add creativity, functions, magic
  • AUv3 would solve the only problem
  • AUv3 compliance
  • Add AU3
Show 5 more
  • AUFX 5 release date
  • AU3 support needed
  • Morphing time function
  • Update ASAP
  • Fix preset loading crash

tardigrain

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

AUFX

No in-app purchases

None

tardigrain

No in-app purchases

Questions

Is AUFX free?
AUFX costs $4.99, with no in-app purchases.
Is tardigrain free?
tardigrain costs $5.99, with no in-app purchases.
Which has better reviews, AUFX or tardigrain?
AUFX is rated higher. AUFX averages 4.6 out of 5 from 33 ratings, while tardigrain averages 4.6 from 98 ratings.
Do AUFX or tardigrain have ads?
Neither AUFX nor tardigrain shows ads.
Which is updated more often, AUFX or tardigrain?
AUFX ships an update every 2 months, and tardigrain every 2 months. Most recently, AUFX was updated on October 21, 2026 and tardigrain on October 29, 2026.

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