Sysex Base vs Replicant 3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sysex Base
Manage MIDI sysex files for your synthesizers. Back up, organize, and load your synth sounds using your iPhone or iPad. Supports various MIDI connection methods and cloud backups.
- Record and send sysex data
- Organize sysex files into folders
- Adjustable transmit speed
- Automatic iCloud backup
- Open sysex files from other apps
- Export sysex files to other apps
- View sysex file data
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Sysex Base is a MIDI sysex file manager for iPhone and iPad. Back up your synth sounds, organize libraries, and load them back onto your synths! Designed to be quick and easy to use. Some of the features: - Record and send sysex data via a connected MIDI interface, or wireless or Bluetooth MIDI - Organize your sysex files into folders, rename them, delete them, etc. - Adjustable transmit speed, for working with older hardware - Automatically back up your sysex files using iCloud - Open sysex files from other apps such as Mail, Dropbox, Google Drive - Export sysex files to other apps just as easily - Quickly view the data inside of a sysex file, including the individual bytes, the Manufacturer indicated, the file size, and the number of sysex messages in the file Also, Sysex Base allows you to record incoming sysex data and transmit sysex to your synth at the same time! So you can even do backups of older synths (such as the Casio CZ series) that require a message to be sent to them to trigger a data dump. These trigger files can be saved within Sysex Base like any other file.
Replicant 3
This real-time audio effect processor captures, loops, and mangles audio on the fly. It offers advanced sequencing with per-step probability and direction, alongside four distinct slice effects for creative sound design. Control dynamics with envelope crossfading and trigger slices manually or via MIDI.
- Real-time audio slicing and mangling
- Advanced step sequencer (3-16 steps)
- Four distinct slice effects (Stutter, Delay, Redukt, Ring Mod)
- Envelope crossfading for dynamic control
- Manual and MIDI triggering
- Intuitive visual step sequencer interface
- AUv3 compatible
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Replicant 3 is a real-time audio slicing and mangling effect, the third generation of the plugin that started the genre in 2007. Feed it any audio and Replicant's sequencer captures, loops, reverses, and re-slices it on the fly, layering in delay, filtering, panning, ring modulation, and bit-crushing to turn predictable tracks into something unpredictable. Version 3 is a ground-up rebuild with an all-new sequencer engine, expanded effects, and a redesigned interface that makes programming complex slice patterns fast and intuitive. SEQUENCER ENGINE Program 3 to 16 steps per measure with multiple step-size modes, from dotted notes through nontuplets. Build rhythmic patterns that go well beyond straight time. Per-step probability, direction (forward or reverse), and effect routing let you create patterns that evolve and surprise. FOUR SLICE EFFECTS The original Stutter capture-and-repeat is joined by three new modes. Delay adds rhythmic echoes to sliced audio. Redukt applies bit-crushing and sample-rate reduction for lo-fi destruction. Ring Mod adds metallic, inharmonic tonal coloring to any slice event. ENVELOPE CROSSFADING Smooth transitions or hard-gated rhythmic chops on every slice event. Control the attack and release shape of each captured buffer for precise dynamic control. MANUAL AND MIDI TRIGGER Bypass the sequencer entirely and fire slices on demand. Manual trigger mode works with touchscreens for live performance. MIDI trigger lets you drive Replicant from a controller, keyboard, or DAW automation. REDESIGNED INTERFACE A visual step sequencer puts your entire pattern on screen at once. Edit steps, assign effects, set probabilities, and adjust parameters without menu-diving. CROSS-PLATFORM PRESETS XML-based preset manager with presets compatible across all Audio Damage plugin formats and operating systems. SOUND DESIGN IDEAS Sequence stuttering vocal chops with per-step filter sweeps. Build glitched-out drum fills by randomizing slice direction and bit-crushing depth. Layer ring modulation on sustained pads for metallic, evolving textures. Use MIDI trigger mode to fire slices manually in a live set. Program polyrhythmic slice patterns with odd step counts against 4/4 time. Run full mixes through Replicant on a bus for controlled chaos breakdowns. AUv3 compatible. Runs standalone or hosted in AUM, ApeMatrix, Audiobus, Cubasis, GarageBand, and other AUv3 hosts on iOS 11 or newer. From Audio Damage, making creative software for discerning musicians since 2002.
Screenshots
Verdict
The clearest difference is rating: Replicant 3 at 4.0 against Sysex Base's 2.9. Replicant 3 also leads on price ($4.99 vs $9.99). Sysex Base's advantage is update cadence (every 3 months vs every 18 months) and device support (3 vs 1). On review sentiment, ratings volume, ads and in-app purchases 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
Sysex Base costs $9.99 and Replicant 3 $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Replicant 3 holds the better App Store score, 4.0 against 2.9. Both are backed by a comparable volume of ratings — 9 and 4 respectively. Written reviews point the same way: 65% of Sysex Base's written reviews are positive against 67% of Replicant 3's.
Sysex Base ships an update every 3 months, Replicant 3 every 18 months. Both last shipped on October 24, 2026.
| Parameter | Sysex Base | Replicant 3 |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 2.9 (9 ratings) | 4.0 (4 ratings) — better |
| Positive reviews | 65.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 9 — better | 4 |
| Update frequency | Every 3 months — better | Every 18 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 19 MB | 27 MB |
| Age rating | +4 | 4+ |
| Developer | Coffeeshopped LLC | Audio Damage, Inc. |
Customer experience
Sysex Base
Replicant 3
In-app purchases
Sysex Base
No in-app purchases
Replicant 3
No in-app purchases









