PdParty vs Relic Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PdParty
This app allows users to run Pure Data patches on iOS devices, enabling custom digital signal processing. It supports OSC, MIDI, and game controller input, offering a WYSIWYG experience for creating multimedia applications.
- Run Pure Data patches on iOS
- Supports OSC, MIDI, and game controller input
- Native Pd GUI objects for WYSIWYG
- Built-in web server for patch management
- General purpose digital signal processing platform
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PdParty is an open-source iOS application for running Pure Data patches on Apple mobile devices using libpd. Directly inspired by Chris McCormick's PdDroidParty and the original RjDj by Reality Jockey, PdParty takes a step further by supporting OSC (Open Sound Control), MIDI, & MiFi game controller input as well as implementing the native Pd GUI objects for a WYSIWYG patch to mobile device experience. Various scene types are supported including compatibility modes for PdDroidParty & RjDj and both patches and abstraction libraries can be managed via a built-in web server. Unlike the rise of the single-purpose audio application, PdParty is meant to provide a platform for general purpose digital signal processing via Pure Data patches. Getting Started --------------- New users, check out the User Guide and download the PdParty Composer Pack which contains the abstractions you need when composing on your computer as well as scene type templates. See the PdParty webpage: http://danomatika.com/code/pdparty Who Is This App For? -------------------- PdParty is meant as a platform for running patches created in Pure Data, a graphical programming environment for multimedia. Related to Max MSP, Pure Data allows computer musicians and non-programmers to create custom DSP routines by connecting objects with virtual patch cables. If you don't intend to create your own PdParty scenes or run scenes provided by others, you may not find this app very useful. Please _do not_ download this app and give it a bad rating because you are unsure of what it's for or how to use it. How Can I Support PdParty? -------------------------- In the spirit of the open-source Pure Data community, PdParty is provided for free on the Apple App Store. If you wish to support its author and or PdParty development, consider having your institution sponsor a PdParty workshop, specific development, or a robotcowboy artist residency. Updating -------- See the changelog on the PdParty website for detailed version info. To update the included PdParty patch folders (lib, samples, tests) after installing a new version, use the buttons at the bottom of the Settings page.
Relic Flow
Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.
- Lo-Fi rhythm and drum loop generation
- Billions of unique sound samples
- Real-time audio recording to WAV
- Multiple input methods (on-screen, PC keyboard, MIDI)
- Export to WAV, SunVox, and text clipboard
- iOS Audio Unit Extension (AUv3) support
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Relic Flow is a generator of Lo-Fi rhythms, noise patterns and drum loops based on unique synthesis algorithms from NightRadio. More than 4 billion samples from the depths of the Mathematical Universe! Features: * search for new sounds with three buttons: next random set, edit code, previous set; each set of 12 sounds corresponds to a code of 8 characters; * three types of keyboards for live performing: on-screen buttons, PC keyboard, MIDI input; * several processing parameters + control via MIDI; * real-time audio recording to WAV (32-bit); * export to: WAV (one file or a set), SunVox (samples + effects in one file), text clipboard; * the LCK button freezes individual samples - they will not change during the search for new sets; * iOS Audio Unit Extension (AUv3). Double clicking on a parameter opens a window for setting the exact value. If you enable the Hold option, the notes will play endlessly, without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option: 1) using the Hold parameter in the "MIDI Mapping" window; 2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play.
Screenshots
Verdict
The clearest difference is price: PdParty at Free against Relic Flow's $1.99. PdParty also leads on update cadence (every 3 months vs every 17 months) and rating (5.0 vs 4.8). Relic Flow's advantage is review sentiment (93% vs 78%). On ratings volume, ads, in-app purchases 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
PdParty is free to download; Relic Flow costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PdParty holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 16 and 26 respectively. Written reviews complicate that: 78% of PdParty's written reviews are positive against 93% of Relic Flow's, so the app with the better star average is not the one people write more warmly about.
PdParty ships an update every 3 months, Relic Flow every 17 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.
| Parameter | PdParty | Relic Flow |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (16 ratings) — better | 4.8 (26 ratings) |
| Positive reviews | 77.8% of reviews | 93.3% of reviews — better |
| Number of ratings | 16 | 26 — better |
| Update frequency | Every 3 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 16 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Wilcox | Alexander Zolotov |
Customer experience
PdParty
Relic Flow
In-app purchases
PdParty
No in-app purchases
Relic Flow
No in-app purchases









