RUN4 vs PLICATA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RUN4
Create music with a four-track tape and texture machine. Record, loop, and shape sounds into playable performances using various material modes and sequencing tools. Export mixes or individual stems.
- Four-track tape and texture machine
- Three material modes: Tape, Poly, Disc
- 64-step sequencer with Euclidean tools
- Track shaping with Grain, Tone, Color, Air
- AUv3 instrument and effect hosting
- MIDI Clock and Ableton Link sync
- Export mixes and WAV stems
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RUN4 is a four-track Tape & Texture Machine for iPhone and iPad. Capture sound, turn it into moving tape loops, build patterns and instruments, then shape everything into a playable performance. THREE MATERIAL MODES • Tape — record, overdub, loop, freeze and recall sound. Listen/Capture can turn the last seconds of RUN4’s internal mix into new material. • Poly — play samples, classic synth and 4-operator FM voices, hosted AUv3 instruments and step patterns. • Disc — stream and perform long-form audio. SEQUENCE Build patterns with up to 64 steps, Euclidean tools, step locks, probability, variation, randomization and count-in. SHAPE EVERY TRACK Move through Grain, Tone, Color and Air. Use device presets, the modulation matrix and four send busses, then finish your mix inside RUN4 with Tone, Drive, Glue, OTT, Width and Limiter. Export final mixes or individual WAV stems. BUILT TO PERFORM Switch sets, control macros and punch-in effects, run audio-reactive visuals, sync via MIDI Clock or Ableton Link, and map external MIDI controls. Dark or light appearance. Same instrument. AUv3 + PROJECT WORKFLOW Host compatible AUv3 instruments and effects inside RUN4, or load RUN4 as an AUv3 effect, source or instrument in a compatible host. Save projects locally or sync them through iCloud between iPhone and iPad. Third-party AUv3 plugins must be installed on every device used to open a project. Also includes Bluetooth MIDI, CC Learn, AudioShare import, offline bounce and a searchable in-app manual. TÓLF — TWELVE MORE TRACKS TÓLF is an optional one-time in-app purchase that adds 12 additional tracks to RUN4’s four-track workflow. • 12 additional tracks with sampler, synth and granular voices. • Four pattern generators — Euclid, Walk, Cascade and Bloom. • Record TÓLF tracks or groups directly into RUN4’s Tape tracks. • Export TÓLF stems and MIDI. TÓLF can be unlocked from Settings and restored on any device using the same App Store account. TÓLF is RUN4’s only in-app purchase. Everything else described above is included with the main app.
PLICATA
This is a compact monophonic synthesizer for hands-on sound design and performance. It features a morphing oscillator, wavefolding, a resonant filter, and a flexible VCA contour, with an independent SUB oscillator for added depth. A 28-socket patch system allows for extensive audio, CV, and event routing.
- Morphing oscillator with wavefolding
- Independent SUB oscillator
- 28-socket patch system
- Microtonal XY keyboard
- 32-step arpeggiator
- Performance macros
- AUv3 support
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PLICATA is a compact patchable monophonic instrument for hands-on sound design and performance. A morphing oscillator feeds wavefolding, a resonant filter and flexible VCA contour, while an independent SUB oscillator adds octave, interval and eight waveform modes. PATCH IT The 28-socket patch system opens audio, CV and event routing. Modulate FOLD without replacing the oscillator path, reset the LFO externally, replace the internal SUB source, control SUB level by CV, distribute modulation through MULT, or build feedback and audio-rate networks. Patch cables are recalled with your sounds. MICROTONAL XY PERFORMANCE The 13-key XY keyboard spans C4–C5. Tune every key independently by ±100 cents or start from 12-TET, Just Intonation, Pythagorean and quarter-tone templates. Horizontal movement adds pitch expression up to ±24 semitones; vertical movement can map each key to as many as eight sound parameters or performance macros. PERFORMANCE VIEW + 32-STEP ARPEGGIATOR Tap PERF for an expanded keyboard-focused surface. The arpeggiator follows INTERNAL, HOST or MIDI clock and offers UP, DOWN, UP/DOWN, AS PLAYED, RANDOM, WALK, CONVERGE, DIVERGE and CHORD styles across up to four octaves. Build patterns from 1 to 32 steps with independent pitch, octave, velocity, gate, probability and ratchet lanes. HOLD captures the note pool; FILL creates a momentary variation. Adjust swing, gate, velocity behavior, probability and ratchets live. Rotate patterns, create temporary MUTATE variations, FREEZE the result, and recall seven ARP scenes with optional MIDI keyswitch control. MACROS, MIDI AND SYNC Six bounded performance macros shape tone, motion, fold, envelope, drive and level. IGNITE is editable: choose multiple targets, ranges and response curves, then store the mapping independently from sound presets. The keyboard can output 12-TET MIDI or preserve microtonal tuning through pitch bend with ±1, ±2, ±12 and ±24 semitone ranges. PLICATA also supports MIDI/MPE input, host sync and externally reset or free-running LFO operation. COMPLETE SOUND STATES PLICATA ships with 20 factory sounds and a full user-preset system. User sounds recall synthesis, patch cables and performance configuration together. Search, organize, favorite, duplicate and tag sounds, or use GEN to create a complete new musical state without overwriting your library. STANDALONE + AUv3 Use PLICATA standalone or as an AUv3 instrument inside compatible Apple music hosts. FEATURES • Morphing oscillator, wavefolding and pulse-width shaping • Independent SUB oscillator with interval and eight waveform modes • Resonant filter, ADSR articulation and drive • 28-socket audio, CV and event patch system • 13-key microtonal XY keyboard with independent tuning • Dedicated PERFORMANCE view with expanded keyboard • 32-step arpeggiator with nine styles and three clock modes • Per-step pitch, octave, velocity, gate, probability and ratchet • HOLD, FILL, rotate, MUTATE/FREEZE and seven ARP scenes • Six performance macros plus editable IGNITE • MIDI/MPE input and microtonal MIDI output • Factory and user presets with complete-state recall • Complete-state generation with GEN • Standalone and AUv3 operation Support, bug reports and feature requests: support@alessandroguardascione.com
Screenshots
Verdict
The clearest difference is in-app purchases: PLICATA at none against RUN4's 1. PLICATA also leads on price ($7.99 vs $12.99). RUN4's advantage is review sentiment (100% vs 67%) and rating (5.0 vs 4.6). On ratings volume, update cadence, ads and monetization model 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
RUN4 costs $12.99 and PLICATA $7.99 up front. RUN4 sells 1 one-off in-app purchase. PLICATA asks for nothing beyond the download.
RUN4 holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 100% of RUN4's written reviews are positive against 67% of PLICATA's.
Both ship on a similar rhythm, roughly every 2 days. Both last shipped on October 31, 2026.
| Parameter | RUN4 | PLICATA |
|---|---|---|
| Price | $12.99 | $7.99 — better |
| Rating | 5.0 (4 ratings) — better | 4.6 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 4 | 5 — better |
| Update frequency | Every 2 days | Every 2 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Best chart rank | #75 — better | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 197 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Eugen Schott | Alessandro Guardascione |
Customer experience
RUN4
PLICATA
In-app purchases
RUN4
- TÓLF 12-Track Sequencer$3.99
PLICATA
No in-app purchases









