Algonautic vs OttavaBassa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Algonautic
This app provides an interactive ambient chord pad instrument for iPad, allowing musicians to generate full chord voicings with a single tap. It offers various modes for sequencing, strumming, and evolving chord progressions, and can be integrated with DAWs as an AUv3 MIDI effect.
- Pads fire complete chord voicings
- Sync to DAW or trigger freely
- Gate and Latch modes
- Strum mode for natural movement
- Transition rules for evolving progressions
- Mutation mode for harmonic variations
- AUv3 MIDI effect compatibility
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Algonautic A MIDI chord pad instrument for iPad. Each pad maps to a full voiced chord. Route the output to your DAW, layer it, sequence it, and capture it as MIDI. The chord library comes from my own catalogue: a harmonic language I developed across Sonic Dreams Vol. 1 & 2, now available as a playable instrument. *** Features • Pads fire complete chord voicings — one tap, full harmony • Sync to your DAW or trigger freely • Gate and Latch modes hold chords for as long as you need • Strum mode spreads chord attacks for natural movement • Transition rules step through chords in order or randomly — useful for progressions that evolve on their own • Mutation mode introduces inversions and harmonic variations over time • Two Part Doublers add bass and top-voice doublings in real time, each on its own MIDI output channel • Runs as an AUv3 MIDI effect in Logic Pro, AUM, Cubasis, and other compatible hosts — or standalone • MIDI only. No audio engine, no added audio latency *** Compatibility Notice Requires an AUv3-compatible host for plugin functionality.
OttavaBassa
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OttavaBassa has been designed for guitarists looking for a simple all-in-one plugin solution for making their guitar sound like a bass. This means you could use your standard guitar to play bass lines on recordings and during live performances. OttavaBassa is an “Octaver” effect that takes your incoming note and transposes it down by one octave putting your instrument into the range of a bass guitar. In addition to the octave-down effect itself, OttavaBassa also includes a simple EQ voiced for controlling the important low and high bass guitar frequencies, as well as built-in effects for drive, compression, stereo chorus and a simple speaker cab filter. “Ottava bassa” is a music theory direction that literally translates as “low octave” or “octave below”. It is commonly abbreviated as “8vb”, hence the icon. OttavaBassa is an AUv3 effects plugin that can run standalone, or in any AUv3 compatible host such as Logic Pro, GarageBand or AUM. OttavaBassa currently runs on iPadOS / iOS (iPad & iPhone) and macOS (Intel & Silicon) and is available as a Universal Purchase from the Apple App Store. If you’re planning on using OttavaBassa on Mac / desktop, please ensure that your favourite DAW / host supports AUv3 (not just AU). PLEASE READ THIS SECTION CAREFULLY! OttavaBassa has been designed specifically for use with guitar. This means that pitches below the low E string (82.4Hz) will not be handled well. Sorry bass players! OttavaBassa will perform at its best when it is given single notes played reasonably cleanly and accurately. It is not a monophonic pitch generator in the true sense, but multiple input notes (aka chords) might result in “warbles” in the processed signal. OttavaBassa uses a pitch detection method that will introduce audio latency, i.e. a delay between input and output. Please note this is not to be confused with audio interface latency, so you cannot “fix” this by changing buffer sizes or sample rates in your host app. Currently OttavaBassa has a latency of around 25ms. So whether OttavaBassa will work for you, depends largely on your playing style and whether you can live with the inherent latency. My personal perspective: I would never make a plugin I wouldn’t use myself. In fact I made OttavaBassa because I needed an Octaver for my own iPad-based live guitar setup, and I couldn’t quite find what I was looking for. I find that OttavaBassa sounds good to me, and feels responsive enough in the context of a live performance, adding bass lines to guitar loops for example. I wouldn’t do a gig without it! I thought hard about making OttavaBassa publicly available because I’ve seen many Octaver plugins get terrible reviews from folks who don’t really understand that the latency and tracking limitations can’t really be magicked away with clever coding! While I am aware of more sophisticated pitch shifting DSP advances that significantly reduce latency especially, I believe this comes at a CPU cost. So while OttavaBassa does use a less sophisticated pitch detection method than “state of the art”, this does mean it’s pretty light on CPU (i.e. around 6% running on an M1 iPad in AUM). And of course, just because it was designed for guitar, doesn’t mean OttavaBassa won’t work on other audio sources - it can sound pretty scary on vocals for example! Just be mindful of the limitations mentioned above regarding pitch range and tracking, e.g., maybe don’t put an entire mix through it and expect amazing results! Thanks for reading to the end :-) -Rob
Screenshots
Verdict
The clearest difference is price: OttavaBassa at $3.99 against Algonautic's $5.99. OttavaBassa also leads on device support (4 vs 1). On ads, in-app purchases and iOS requirement 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
Algonautic costs $5.99 and OttavaBassa $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Algonautic | OttavaBassa |
|---|---|---|
| Price | $5.99 | $3.99 — better |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 11 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Axart Labs OU | Rob Jackson |
In-app purchases
Algonautic
No in-app purchases
OttavaBassa
No in-app purchases









