RP vs Mantis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RP
This app offers dual stereo delay lines for a vast array of audio effects, from simple echoes to complex soundscapes. It features individual bypass, modulation routing, and tempo synchronization options.
- Dual stereo delay lines
- High- and Lowpass filters
- Stereo spread and Looping
- Separate modulation delay
- Tempo sync via AudioUnit Host or Ableton Link
- Delay times from 10ms to 2000ms
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RP-1 - Dual Digital Delay FX Two separate (stereo) delay lines allow for a wide range of effects ranging from basic slapback and ping-ping type echos to complex modulations and soundscapes. * Overview - Digital Stereo Delay with High- and Lowpass filters, Stereo spread and Looping - Separate modulation Delay for Chorus, Vibrato, Flanger, Panning, Phaser & Tremolo effects - Both sections can be bypassed individually - Mod section can be routed pre or post delay - Delay Times from 10ms to 2000ms (or 1/32 to 2bars) - Tempo Sync via AudioUnit Host or Ableton Link - Tap Temp and Manual Tempo - Normal, Dotted and Triplet - Stereo Spread - Simple 1-Button Looping * Connections - AudioUnitV3 Effect - Inter-App Audio Effect - Audiobus (Filter) - Ableton Link - USB Audio Interface - Microphone
Mantis
This audio plugin emulates a vintage 70s analog delay/echo unit, offering a warm, authentic sound. It features four echo taps, swell selectors, and a unique modulation section for chorus-like effects.
- Emulates rare 70s BBD delay/echo
- Warm analog sound
- Four echo taps
- Four swell selectors
- Rotafaze modulation section
- Mimics tape echo wow/flutter
- Chorus-delay effect
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Mantis is a plugin that emulates a rare BBD (bucket-brigade device) delay/echo unit of the 70s, faithfully recreating its warm and analog sound. Available as AUv3 and Standalone. As the original unit, Mantis features an echo section with four taps and four swell selectors. It also features the rotafaze section, a modulation that can mimic the wow/flutter of a tape echo or turn the unit into a unique chorus-delay.
Screenshots
Verdict
The clearest difference is rating: Mantis at 5.0 against RP's 3.9. RP's advantage is price ($5.99 vs $14.99) and update cadence (every 2 months vs every 9 months). On ratings volume, ads, in-app purchases 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
RP costs $5.99 and Mantis $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mantis holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 15 and 8 respectively.
RP ships an update every 2 months, Mantis every 9 months. The most recent releases landed on August 26, 2026 and September 26, 2026 respectively.
| Parameter | RP | Mantis |
|---|---|---|
| Price | $5.99 — better | $14.99 |
| Rating | 3.9 (15 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 15 — better | 8 |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 13 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Aras | AudioThing Ltd. |
Customer experience
RP
Mantis
In-app purchases
RP
No in-app purchases
Mantis
No in-app purchases
