Comparison

LooP'Dup vs PolyDelay

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

Head to head
About

LooP'Dup

This app allows users to sample, arrange, and loop audio clips for live performance or music creation. It offers extensive control over individual tracks, effects, and clip settings, with the ability to sample from external devices and sync with other music software.

Highlights
  • Sample and remix audio clips
  • Arrange clips into sets and songs
  • Apply send effects (delay, reverb, filter)
  • Sample from microphone or external devices
  • Sync with external MIDI and Ableton Link
  • Load and export projects
Features
Read full description

Loop'Dup is an audio clip player, sample arranger and loop sampler. Bring your loops into one app to sample jam, experiment, create live sets and absolutely have lots of fun! Loop'Dup! - Infinite beats, endless inspiration. This app was made entirely with solar power. Each track can launch a clip anytime, in-time with the master tempo. Every project contains 8 sets of 8 clips per track. One track can have up to 64 audio loops available to play at anytime. You could arrange sets as a songs and each row is a song part. Or each set arranged as a genre of clips (Beats, Bass, Synth etc) Perform a whole live -set. Arrange clips as rows or launch a clip from any set. All tracks have separate send effects levels of delay, reverb, dual filter. Track FX can be muted on or off as well as track volume. A special TempFX state can be used to freely play with FX sends then revert back to previous state instantly. Launch rows of clips simultaneously for arranging parts or scenes. Sample into a clip at anytime using bult in microphone or external USB audio device (class compliant). While sequencer is playing it samples a fixed length (chosen in settings) and starts at the nearest quantised bar (chosen in options). Choose to manually start sampling (waits for slow signal) when sequencer is not running, stop sampling manually or wait for the chosen fixed length. It can also auto-play like a looper Resample what is playing including any FX into an empty clip to bounce multiple tracks into one clip. Load audio files into a clip from the "Samples" folder located in this Documents folder. You can also use AudioCopy general pasteboard to conveniently copy audio between apps. AudioPaste directly to a clip or copy the audio from a clip and AudioPaste into another supporting app. Includes a demo project containing 3 sets of audio clips Also included are some audio loops captured from 2XB303, 7XDXFM, 7XWAVE, 6X806 and PunkGen with some other drum loops to help get you started jamming. The included audio loops are electro synth based. Manually set an audio clip settings: Sample duration from 8 to 128 steps (sixteenths), Reverse, Stutter effect, Auto pitch to adjust pitch to fit length of clip or manually transpose for one-hit samples, Gain override, Loops count (how many times a loops a clip will repeat), Next-Clip ( auto launching a different clip loops have finished). Send MIDI out clock to external MIDI synths, drum machines or grooveboxes so they play in time while also sampling them. You can, for example sync to the Roland MC101/MC707 via USB and send MIDI clock while sampling the MC101/MC707 own audio back into loopD'up Up to 10 projects can be loaded at once and you can export consolidated projects or import backed up projects into a project slot. 3 Different metronome modes to help you sample in time. Latency setting to compensate for microphone delays. Ableton Link to sync with other apps. IAA to route audio into Audiobus, AUM or other supporting apps to process live audio or sample. Loop it. Layer it. Love It! Loop'Dup - Your pocket sized Studio! Specs: Time synced Delay FX speed . Auto play after sampling option. Launch quantize settings from 16 steps to 128 steps. Clip length options from 8,16,32,64,128. 8 Sets A - H per project. 8 Clips per each set. 64 Audio clips per track can be loaded. Ableton Link sync. USB audio device support up 44.1k or 48k only (class compliant). USB MIDI device support (class compliant). MIDI out sync. Audio latency adjust up to 100ms IAA Audio output. Memory efficient disk streaming of audio. Auto normalise option (default) 10 projects loaded at any time. Monitor audio in option. To get audio files from outside your device into the app you can transfer audio using airplay, iCloud or usb and copy into the samples folder located in this app's documents folder. You can access this folder using Apple's Files application. Any problems be sure to contact via the email link in information

About

PolyDelay

This audio effect plugin creates unique polyrhythmic delays and familiar delay patterns. It syncs to host tempo and offers advanced tone-shaping options like filters and modulation.

Highlights
  • Polyrhythmic delay calculations
  • Host tempo sync
  • Dual delay lines
  • Stereo width control
  • High and low pass filters
  • Stereo modulation
  • Internal limiting
Read full description

PolyDelay Polyrhythmic Delay Plugin (AUv3) PolyDelay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview PolyDelay is a dual delay line / stereo effect with optional host tempo sync. While PolyDelay can be used to create interesting stereo polyrhythmic delays, it can also produce more familiar delay patterns such as dotted eighth and quarter note triplets. Polyrhythms, Divisions and Beats PolyDelay calculates delay times based on a BPM (beats per minute) tempo, and the polyrhythmic notation of D:B, where D = divisions and B = beats. For example, 3:2 would mean that the time for 2 beats should be divided by 3. If you're more use to the idea of note lengths and delay times, such as quarter notes and dotted eighths, etc., this might be confusing at first, but hopefully this guide will help. Firstly, everything starts with the beat! So, for 120BPM, each beat (or quarter note) will be half a second, or 500ms. So if you want a quarter note delay, you want 1 division within one beat, so you would set Divs and Beats to 1. Here are some typical note values, lengths (120BPM) and their D:B values: 1/4 = 500ms = 1:1 (take the length of one beat, and divide that by one) 1/8 = 250ms = 2:1 (take the length of one beat, and divide that by two) 1/16 = 125ms = 4:1 (etc.) 1/32 = 63ms = 8:1 (etc.) See how the divisions are doubled-up for each note? And here are some dotted and triplet note examples - see how the D:B numbers start to get interesting! 1/4D = 750ms = 2:3 1/4T = 333ms = 3:2 1/8D = 375ms = 4:3 1/8T = 167ms = 3:1 A classic stereo delay would be 1:1 (1/4) left, and 4:3 (1/8D) right with Width set to max. If you want a really long delay, a 1:8 setting would give you 4 seconds at 120BPM with Multiply set to Normal, or 8 seconds set to Half. The Presets also include some typical (and not so typical!) examples to get you started. The fun really starts when you start mixing "unusual" (typically odd numbers) divisions and beats, such as 5:4 or 2:7. These sorts of relationships are what we typically refer to as polyrhythms. Try experimenting with PolyDelay on simple sequences and drum parts / patterns and you may start to hear all sorts of interesting rhythmic interplay as your brain tries to figure out what's going on! For additional tone-shaping, PolyDelay includes variable stereo width, a high and low pass filter, stereo modulation and internal limiting to keep audio levels in check. For more info and support please visit: www.waverley-instruments.com/robjackson

Screenshots

LooP'Dup4 screens
PolyDelay4 screens

Verdict

The call

The clearest difference is review sentiment: PolyDelay at 100% against LooP'Dup's 50%. PolyDelay also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.6). LooP'Dup's advantage is update cadence (every 5 days vs every 3 months). On price, ads, monetization model 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

LooP'Dup costs $1.99 and PolyDelay $1.99 up front. LooP'Dup sells 1 one-off in-app purchase. PolyDelay asks for nothing beyond the download.

UpkeepUpdate frequency

LooP'Dup ships an update every 5 days, PolyDelay every 3 months. The most recent releases landed on October 24, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 6 level
LooP'Dup versus PolyDelay: the parameters behind the verdict, then further details
ParameterLooP'DupPolyDelay
Price$1.99$1.99
Rating—5.0 (3 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings—3 — better
Update frequencyEvery 5 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.612.0 — better
Further details — not scored
Size94 MB13 MB
Age rating4+4+
DeveloperRob WilmotRob Jackson

Customer experience

LooP'Dup

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

PolyDelay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

LooP'Dup

One-time1
  • Get Four Tracks$2.99
None

PolyDelay

No in-app purchases

Questions

Is LooP'Dup free?
LooP'Dup costs $1.99, and also offers in-app purchases.
Is PolyDelay free?
PolyDelay costs $1.99, with no in-app purchases.
Do LooP'Dup or PolyDelay have ads?
Neither LooP'Dup nor PolyDelay shows ads.
Which is updated more often, LooP'Dup or PolyDelay?
LooP'Dup ships an update every 5 days, and PolyDelay every 3 months. Most recently, LooP'Dup was updated on October 24, 2026 and PolyDelay on September 29, 2026.

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