PD1 vs EchoSketch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PD1
This app simulates classic analog delay pedals, offering a meaner grit with a ladder filter and random delay-line noise. It's an audio-unit effect designed for musicians seeking unique delay sounds.
- Analog delay simulation
- Ladder filter for meaner grit
- Random delay-line noise
- Audio-unit effect plugin
- Classic pedal sound recreation
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PD-1 is an analog delay simulation audio plug-in and app that recreates the sounds of classic analog delay pedals with the twist of significantly meaner girt from a ladder filter and random delay-line noise.
EchoSketch
Shape delay and reverb effects in real-time with a playable X/Y performance surface. Explore four distinct delay types and multiple reverb options, with extensive parameter control for unique sound morphing. Works as a standalone app or an Audio Unit plugin.
- X/Y performance surface for real-time sound shaping
- Four distinct delay types: digital, analog, reverse, ping-pong
- Spring, plate, and hall convolution reverb
- Modulation and tone control for echoes
- HOLD, LIFT, FREEZE, and MOTION performance gestures
- Standalone app and AUv3 plugin compatibility
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EchoSketch turns delay and reverb into a live, playable instrument. Shape your sound in real time using a responsive X/Y performance surface designed for intuitive touch expression. At its core are four great-sounding delays: digital, analog, ping-pong, and reverse. The range for each parameter and the XY axes direction can be set independently, allowing you to easily morph between sounds. It works as an Audio Unit plugin or standalone — iOS or Mac. Comprehensive Delays • Digital (patterned after a legendary '80s rack delay), Analog (warm, with tape-style pitch glide), Reverse, and Left/Right Ping-Pong • Delay times can sync to tempo or be set in milliseconds • Feedback features delay-dependent tone shaping — bright for short delays and darker for long ones Convolution Reverb • Stereo or mono Spring, Plate, and Hall • Reverb path is separate from the delay (same as vintage tape echo units), so repeats don’t get washed out Modulation and Filter • Analog-style modulation for chorused, warbly pitch echoes • Tone control — darken or brighten delays, with a center detent for flat Designed for Hands-On Performance • HOLD / LIFT — leave the XY cursor in place, or touch the pad for momentary delay sounds • FREEZE — set the current feedback into an infinite loop and play over it • MOTION — record a gesture on the XY pad and loop it Presets and More • Presets are transferable between hosts • Two looks — light "Trail" and dark "Glow" • Works standalone with live audio or as an AUv3 plugin • Universal — iPad/iPhone also gets you the Mac version — one purchase • Mac: after installing, open EchoSketch once to use it as a plugin in your DAW • Works in AUM, AudioBus, GarageBand, Logic, and other AUv3 hosts
Screenshots
Verdict
The clearest difference is price: PD1 at $3.99 against EchoSketch's $7.99. EchoSketch's advantage is update cadence (every 2 days vs every 6 days). On ads, in-app purchases, 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
PD1 costs $3.99 and EchoSketch $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PD1 ships an update every 6 days, EchoSketch every 2 days. Both last shipped on September 29, 2026.
| Parameter | PD1 | EchoSketch |
|---|---|---|
| Price | $3.99 — better | $7.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.5 | 17 — better |
| Further details — not scored | ||
| Size | 10 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Pedro Yamada | Avi Bortnick |
Customer experience
PD1
EchoSketch
In-app purchases
PD1
No in-app purchases
EchoSketch
No in-app purchases









