Red Animal vs Mantis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Red Animal
This app emulates a vintage transistor organ, offering authentic sound generation through component modeling. It features adjustable key click, vibrato, and built-in stereo effects, perfect for musicians seeking classic organ tones.
- Component modeling engine
- Full polyphony
- Adjustable key click
- Authentic register filters
- Built-in stereo delay and reverb
- Unlimited program storage
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Please note: This App comes with an AUv3 plugin extension. Red Animal is a component modeling emulation of a vintage Vox Continenal 301 electronic organ. INSTRUMENT BACKGROUND Bands like the Doors, the Animals, the Monkees made the Vox Continental one of the most famous electronic organs of the 60's. This particular model was made in the UK and also in Italy and was rather simple in both electronics and features. Like many other electronic organs of the same age, the sound generator is based on the so-called "Top Octave Synthesizer", TOS for short, responsible of the generation of 12 waveforms, one for each note of the last octave of the organ keyboard. The basic waveform in this case is a low-pass filtered square wave. The lower octaves are produced by means of "divider" circuits that halve the frequency of each waveform, going so forth for each lower octave down to the pedalboard tones. This organs offers only two different registers: Sine and Master, with 4 different foot lengths. The sound engine of GSi Red Animal is also featured in the GSi Gemini and the Crumar Mojo 61. Of course this type of instrument gives its best if run through external effects and amps. Have a look at the GSi catalog and experiment with some of the effects offered by GSi. Main features: - Component Modeling engine (no samples, all real-time synthesis) - Full Polyphony (61 notes, 12 Top-Octave Oscillators + Frequency Dividers) - Key multi-contact simulation with authentic and adjustable key click - Authentic recreation of the Vox register filters - Recreation of the background noise and leakage - Adjustable vibrato (speed and depth) - Built-in Stereo Delay effect - Built-in Stereo Reverb effect - Built-in programmer with unlimited Programs - Embedded user's manual - Available as Stand-alone application and audio plugin - Very low CPU and RAM usage
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 update cadence: Red Animal at every 2 months against Mantis's every 9 months. Red Animal also leads on iOS requirement (9.3 vs 14.0). Mantis's advantage is rating (5.0 vs 4.8). On price, 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
Red Animal costs $14.99 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 4.8. Both are backed by a comparable volume of ratings — 5 and 8 respectively.
Red Animal ships an update every 2 months, Mantis every 9 months. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.
| Parameter | Red Animal | Mantis |
|---|---|---|
| Price | $14.99 | $14.99 |
| Rating | 4.8 (5 ratings) | 5.0 (8 ratings) — better |
| Number of ratings | 5 | 8 — better |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 14.0 |
| Further details — not scored | ||
| Size | 7 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Genuine Soundware | AudioThing Ltd. |
Customer experience
Red Animal
Mantis
In-app purchases
Red Animal
No in-app purchases
Mantis
No in-app purchases









