Comparison

apeFilter vs BLEASS Slow Machine

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

Head to head
About

apeFilter

This app offers advanced audio equalization with up to 36 peak filters and spectral grid compilers for precise sound sculpting. It supports various audio input methods and includes effects like reverb and delay.

Highlights
  • 36 Peak Filters
  • Spectral Grid Compilers
  • AudioUnit V3 & Inter-App Audio Support
  • Built-in Stereo Sampler
  • ClassicVerb and Delay FX
  • MIDI Control
Features
Currently charting
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apeFilter is a sophisticated Equaliser, the DSP is based on the Biquad/Cascade filters, very fast! The graphical interaction provides a great tool to design an extremely precise and smooth frequency response by directly manipulating up to 36 Peaks Filters. The Spectral Grid compilers increase the complexity and coherence between the filters bandwidth space. You can create your pitch space by the way of four different criteria of construction by determining a pitches grid: Fibonacci, Harmonic, Geometric and Scalar. Use apeFilter for sculpt your sound through the embedded sampler or LIve from Audiobus or Inter-Audio-App Input. Among the FX chain, an amazing ClassicVerb is available. + AudioUnit V3 (FX) + Inter-App Audio (FX) + Audiobus (Full) + Ableton Link + Audio Interface support + Microphone input + 72 Peak Filters for Spectral Grid Compilers + 4 Spectral Grid Compilers: Fibonacci, Harmonic, Geometric and Scalar + 6 Common Filters: Lowpass, Hipass, Bandpass, Notch, Lowshelf, Hishelf + MIDI Note On/Off messages, for playing Filters Frequency and Filters Peaks Gain + Audiobus and Inter-App Audio support (sender and FX) + Built In Stereo Sampler with varispeed + Control Manager LFO for Parameters + Midibus, Virtual Midi and Network: 14 bit NRPN controllers + File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy + Snapshot Presets Morphing Pad + Post Fx Chain: Stereo Delay, Amazing ClassicVerb and Dynamic compressor/expander

About

BLEASS Slow Machine

This music effect app offers creative ways to manipulate audio, allowing you to slow down tracks, create tape stop effects, and program speed variations. It provides precise control over rhythm, pitch, and timing for unique sound design.

Highlights
  • Creative slow down effect
  • Tape stop effect with performance controls
  • Speed sequencer for programmed variations
  • Adjustable loop size and speed
  • Filter for frequency band control
  • Multiple time stop modes
Currently charting
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Thanks to 3 different yet complementary ways of manipulating time with creativity, BLEASS Slow Machine can deepen any beat by completely or partially slowing down the audio signal, transform epic leads into heavy basses, and add some “tape stop” effect with precision either by touching the X/Y Stop trigger, or by dialing in precise sequence automations. TECHNICAL DESCRIPTION: BLEASS Slow Machine offers both sequenced and live ways to manipulate time thanks to 3 stages: ____ SLOW DOWN stage: Creative and straightforward slow down effect that modulates both rhythm and pitch. - Loop Size: Slow Down resets its reading position according to the Loop Size. A Loop Size of ‘1 bar’ means that the reading position is resynced with the host reading position every 1 bar. - Speed: controls the speed of the played loop relative to the default speed. (For example ‘½’ means that audio is played back at half its original speed, which means one octave lower). - Quantization: When this option is ON, every change in Loop Size and in Speed will wait until the end of the current loop to be effective. When it is set to OFF, the change is immediate. - Filter: keep a selected frequency band of the slowed signal. When the filter is ON, the middle colored band is processed by the effect while the low and high bands remain unchanged. - Fade: Sets the duration of the crossfade between loops. - State: Activates or deactivates the SLOW DOWN stage - Dry/Wet: mixes the dry and wet signals ____ TIME STOP stage: Especially made for performance, TIME STOP gives an intuitive and visual way to instantly create a classic tape stop effect. - Trigger: the “Stop” button triggers the time stop effect within a given duration (set by the position of your finger along the Y-axis) and following a curve (set by the position of your finger along the X-axis). - Mode: choose between 4 time stop modes: ‘Step’, ‘Ramp Up & Down, ‘Ramp Down’ and ‘Ramp Up’. _ In ‘Step’ mode, the speed instantly goes to 0 when the trigger is hit and goes back to 1 when the trigger is released. _ In ‘Ramp Up & Down’ mode the speed is ramped down to 0 when the trigger is hit and ramped up to 1 when it is released. The duration and curve of the ramp is set by the position of your finger on the control. _ In ‘Ramp Down’ mode, the speed is ramped down to 0 when the trigger is hit and instantly goes back to 1 when released. _ In ‘Ramp Up’ mode the speed instantly goes to 0 when the trigger is hit and is ramped up to 1 when released. - Hold: when Hold is ON, the trigger is not released until Hold is turned OFF. - Speed: precise control of the play speed. - State: Activates or deactivates the TIME STOP stage - Dry/Wet: mixes the dry and wet audio signals ____ SPEED SEQUENCER stage: The speed sequencer stage offers a unique way to program speed variations in your music. - Length: sets the number of steps in the sequencer. - Resolution: sets the duration of a sequencer step. - Grid Snap: when ON, steps snap to the grid allowing a precise rhythmic and harmonic editing. - Sequencer: sets a playing speed per step. Each step has 4 different curve modes: ‘Step’, ‘Link’, ‘Ramp Up’ and ‘Ramp Down’. Change the curve mode by tapping the curve icon at the bottom of each step. - Amount: controls the amount of sequencer speed modulation. 100% means that speed can go from 1 to 0 (50% means that speed can go from 1 to 0.5). - Randomness: sets the amount of randomness of the sequencer. If randomness is 50%, a step value will be a random value between stepValue +/- 0.5 - Fade: controls the crossfade duration between each step. - State: Activates or deactivates the Speed Sequencer stage - Dry/Wet: mixes the proportion of dry and wet signals Check out www.bleass.com for video tutorials and more info! * PLEASE NOTE: this is an Audio Unit Effect plugin (AUv3) which requires a compatible host such as AUM, GarageBand, Cubasis, BM3 or Auria. Standalone mode also available for demo purposes.

Screenshots

apeFilter4 screens
BLEASS Slow Machine3 screens

Verdict

The call

The clearest difference is update cadence: apeFilter at every 2 months against BLEASS Slow Machine's every 28 months. apeFilter also leads on review sentiment (100% vs 82%). BLEASS Slow Machine's advantage is price ($6.99 vs $7.99) and iOS requirement (12.0 vs 17.0). On rating, 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

apeFilter costs $7.99 and BLEASS Slow Machine $6.99 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 — 4.8 for apeFilter against 4.7 for BLEASS Slow Machine. Both are backed by a comparable volume of ratings — 33 and 38 respectively. Written reviews are what separate them: 100% of apeFilter's written reviews are positive against 82% of BLEASS Slow Machine's.

UpkeepUpdate frequency

apeFilter ships an update every 2 months, BLEASS Slow Machine every 28 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 7 level
apeFilter versus BLEASS Slow Machine: the parameters behind the verdict, then further details
ParameterapeFilterBLEASS Slow Machine
Price$7.99$6.99 — better
Rating4.8 (33 ratings) — better4.7 (38 ratings)
Positive reviews100.0% of reviews — better81.8% of reviews
Number of ratings3338 — better
Update frequencyEvery 2 months — betterEvery 28 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#198#183 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size18 MB27 MB
Age rating4++4
DeveloperapeSoftBLEASS

Customer experience

apeFilter

All ratings33 ratings
Positive97.0%
Neutral0.0%
Negative3.0%
Written reviews20 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BLEASS Slow Machine

All ratings38 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews11 reviews
Positive81.8%
Neutral0.0%
Negative18.2%

In-app purchases

None

apeFilter

No in-app purchases

None

BLEASS Slow Machine

No in-app purchases

Questions

Is apeFilter free?
apeFilter costs $7.99, with no in-app purchases.
Is BLEASS Slow Machine free?
BLEASS Slow Machine costs $6.99, with no in-app purchases.
Which has better reviews, apeFilter or BLEASS Slow Machine?
apeFilter is rated higher. apeFilter averages 4.8 out of 5 from 33 ratings, while BLEASS Slow Machine averages 4.7 from 38 ratings.
Do apeFilter or BLEASS Slow Machine have ads?
Neither apeFilter nor BLEASS Slow Machine shows ads.
Which is updated more often, apeFilter or BLEASS Slow Machine?
apeFilter ships an update every 2 months, and BLEASS Slow Machine every 28 months. Most recently, apeFilter was updated on October 11, 2026 and BLEASS Slow Machine on October 7, 2026.
Which is more popular, apeFilter or BLEASS Slow Machine?
apeFilter currently peaks at #198 in the App Store charts, and BLEASS Slow Machine at #183. Chart position reflects recent download velocity rather than total install base.

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