Comparison

apeDelay vs AltiSpace 2

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

Head to head
About

apeDelay

This audio effect app transforms sound by converting it to the frequency domain for manipulation, then back to the time domain. It offers advanced spectral effects like blur, granulation, and filtering, with extensive control over delay lines and feedback.

Highlights
  • Spectral delay with up to 2048 lines
  • STFT analysis/re-synthesis
  • Spectral Blur, Granulate, Decimator, Freeze
  • Brick-wall filters
  • AudioUnit V3 (FX) and Inter-App Audio (FX) support
  • Audiobus (Full) and Ableton Link integration
  • Built-in Stereo Sampler
Features
Read full description

apeDelay - spectral Delay implements up to 2048 delay lines with feedback or up to 2048 Brick-wall filters. The algorithm is based on the STFT (i.e. Short Time Fourier Transform) analysis/re-synthesis. The audio signal is converted in abstract ‘Frequency Domain’, where is manipulated and transformed back again in ‘Time Domain’. You can draw the Time and Feedback shapes for both stereo channels. This is achieved from the multi sliders, who provide a great tool to manage the huge numbers of parameters. You can also benefit of more advanced spectral manipulations like the Spectral Blur, Granulate, Bins Decimator, Noise Gate, Spectral Freeze and Brick-wall filters. + AudioUnit V3 (FX) + Inter-App Audio (FX) + Audiobus (Full) + Ableton Link + Audio Interface support + Microphone input + Built In Stereo Sampler with varispeed and scrubbing + Control Manager LFO for all the Parameters + Midibus, Virtual Midi and Network: 14 bit NRPN controllers + Sample Manager, sharing common audio files via iTunes, Dropbox and AudioCopy + Snapshots Presets Morphing Pad + Post Fx: Stereo Delay, Amazing ClassicVerb Low/Hi Shelving and Dynamic Processor + etc...

About

AltiSpace 2

This app offers advanced convolution reverb with realistic acoustic simulations and famous hardware device presets. It allows users to import their own impulse responses and provides extensive controls for EQ, gating, modulation, and more to shape unique sounds.

Highlights
  • Import custom impulse response files
  • Library of famous hardware reverb presets
  • Advanced EQ, gate, and ducking controls
  • Modulation and pitch shifting effects
  • MIDI controller support
  • Stereo and mono input processing
Features
Currently charting
Read full description

AltiSpace is a convolution reverb app with advanced controls that provides realistic sounding natural acoustic space or the most famous reverb devices for any track or mix. A convolution reverb takes a captured sample (called an impulse response) from a real-world space or hardware and uses this to digitally simulate the reverberation of that space or device down to the last detail and nuance. Because it is sampled, not synthesized, convolution reverb is known for its stunning realism, and it is widely considered to be the best type of reverb. However, unlike the more common algorithmic reverbs, convolution reverbs usually does not have much control over the reverberation process. But AltiSpace, in addition to the ability to load your own impulse response files and a built-in library of real reverb device presets, has advanced settings such as EQ, gate, ducking, modulation and more. You can change the original impulse response parameters to something completely new and then save it as a new preset. This app has an easy-to-use user interface, where all the main controls are located on the single screen, and it is ready to use right out of the box, even without additional settings. And at the same time, you can easily change the parameters of the impulse responses from the built-in library to create your own sound. App features: Ability to import your own impulse response files. A large built-in library of presets from the most famous hardware reverbs. Convenient preset manager with the ability to group and search presets. Presets can be marked as favorites for display in the favorites group. Supports MIDI controllers (also Bluetooth) with learn or manually assign mode. Reverb can work with a stereo or mono input and convert it to stereo. Add dynamic noise before reverb for a more natural sound. The gate allows you to turn on the reverb when the threshold is exceeded. The ducking allows you to turn off the reverb when the threshold is exceeded. Sets the minimum reverb level for Gate and Ducking modes. Equalizer with high and low cut filters in chain before or after reverb. Changing the time (length) of the current impulse response. Possibility to set a fade out point for a smooth end of the impulse response. Sets the pre-delay time of the signal before reverb. Experimental feature to change the pitch of the impulse response. Amplifying early or late reflections. Adjusts the stereo image before the reverb. Haas effect for adding stereo space to a mono signal. Sets the depth and frequency of modulation the signal before reverb. Mixing dry / wet signal and adjusting the output level. Four-channel mode for better stereo ambience. Input and output level meters. Indicators of possible input clipping for standalone. Prevents any output clipping for standalone. Built-in full description of all controls. Demo: https://www.youtube.com/watch?v=WBHxgjkGCoU https://www.youtube.com/watch?v=GLNi9wHaGew https://www.youtube.com/watch?v=A3RPopor9gI AltiSpace 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). AltiSpace works on iPhone and iPad standalone, as an Audio Unit or Inter-App Audio module, and supports Audiobus. On MacOS, AltiSpace can works both as a standalone application and as an Audio unit (AUv3) with DAWs and other hosts that support AUv3 plugins. AltiSpace has a built-in detailed description of all parameters also available as PDF file on the application site. You can find more information on AltiSpace and other creative audio apps at: https://motion-soundscape.blogspot.com

Screenshots

apeDelay4 screens
AltiSpace 24 screens

Verdict

The call

The clearest difference is update cadence: AltiSpace 2 at monthly against apeDelay's every 4 months. AltiSpace 2 also leads on chart position (#196 vs unranked) and iOS requirement (13.4 vs 17.0). apeDelay's advantage is review sentiment (88% vs 78%). On price, rating, ratings volume 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

apeDelay costs $7.99 and AltiSpace 2 $7.99 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 apeDelay against 4.7 for AltiSpace 2. Both are backed by a comparable volume of ratings — 17 and 30 respectively. Written reviews are what separate them: 88% of apeDelay's written reviews are positive against 78% of AltiSpace 2's.

UpkeepUpdate frequency

apeDelay ships an update every 4 months, AltiSpace 2 monthly. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 7 level
apeDelay versus AltiSpace 2: the parameters behind the verdict, then further details
ParameterapeDelayAltiSpace 2
Price$7.99$7.99
Rating4.6 (17 ratings)4.7 (30 ratings) — better
Positive reviews87.5% of reviews — better77.8% of reviews
Number of ratings1730 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#196 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.4 — better
Further details — not scored
Size24 MB227 MB
Age rating4+4+
DeveloperapeSoftIgor Vasiliev

Customer experience

apeDelay

All ratings17 ratings
Positive88.2%
Neutral5.9%
Negative5.9%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

AltiSpace 2

All ratings29 ratings
Positive93.1%
Neutral3.4%
Negative3.4%
Written reviews18 reviews
Positive77.8%
Neutral11.1%
Negative11.1%

In-app purchases

None

apeDelay

No in-app purchases

None

AltiSpace 2

No in-app purchases

Questions

Is apeDelay free?
apeDelay costs $7.99, with no in-app purchases.
Is AltiSpace 2 free?
AltiSpace 2 costs $7.99, with no in-app purchases.
Which has better reviews, apeDelay or AltiSpace 2?
AltiSpace 2 is rated higher. apeDelay averages 4.6 out of 5 from 17 ratings, while AltiSpace 2 averages 4.7 from 30 ratings.
Do apeDelay or AltiSpace 2 have ads?
Neither apeDelay nor AltiSpace 2 shows ads.
Which is updated more often, apeDelay or AltiSpace 2?
apeDelay ships an update every 4 months, and AltiSpace 2 monthly. Most recently, apeDelay was updated on November 1, 2026 and AltiSpace 2 on November 7, 2026.

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