Additive Drum Machine vs pOus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Additive Drum Machine
Create unique drum beats with additive rhythm and traditional drum machine functionality. Design sequences of any length and structure, easily switching steps on and off to craft complex patterns. Ideal for practicing odd meters and exploring diverse rhythmic structures.
- Additive rhythm concept
- Traditional drum machine interface
- Customizable sequence length
- Step sequencing
- Odd meter support
- Symmetrical and asymmetrical rhythms
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With Additive Drum Machine you can create drum beats using the concept of “additive rhythm” in combination with the sounds and ease of use of a traditional drum machine. Construct step sequences of any length and structure by the chaining of "long" and "short" beats. Then switch on and off individual steps to create a drum pattern. Whether used as a practice tool or composition sketchpad, its intuitive interface allows you to easily make drum patterns that use odd meters, symmetrical and asymmetrical rhythmic structures, and various subdivisions of the pulse. With Additive Drum Machine your musical imagination is the limit.
pOus
This app emulates analog drum machine bass drums with adjustable tuning and decay. It offers MIDI OUT functionality for envelope follower data and a scale mode for playing musical scales. Designed for musicians using AUv3 hosts.
- BassDrum emulation
- Adjustable tune and decay
- MIDI OUT envelope follower
- Scale mode for musical notes
- AUv3 instrument
- MIDI CC routing
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Concept: The app is an AUv3 instrument that emulates the so-called “BassDrum” of analog drum machine. In addition it features MIDI OUT functionality of Envelop Follower, that is, the user can send out this instrument's unique envelop via midi CC for modulating external plugins. Also there is "scale mode" where the user can play "pOus" with musical scale like Bass. System Requirements: AUv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix, etc) Usage: There are 9 sliders & one button. Tune: BassDrum’s fundamental frequency (30hz - 160hz). text-editable. Decay: determines its duration. Amp: audio’s decibel representation. MIDI OUT: whether the functionality of envelop follower is turned on or off (default: off) MIDI Gain: gain amount of MIDI out Offset: balances the output parameter’s value Channel: determines MIDI channel MIDI CC: determines the destination MIDI CC number. text-editable Scale Mode: This is a sort of Bass mode, that is, it can play musical scale in response to incoming MIDI notes. Button: triggers the instrument. Recommended Scheme: drum machine (MIDI out) -> “pOus” -> audio effect (compressor, saturator etc)
Screenshots
Verdict
The clearest difference is update cadence: pOus at every 4 months against Additive Drum Machine's every 15 months. pOus also leads on iOS requirement (12.0 vs 14.5). Additive Drum Machine's advantage is ratings volume (3 vs 1). On price, rating, 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
Additive Drum Machine costs $2.99 and pOus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Additive Drum Machine against 5.0 for pOus. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Additive Drum Machine ships an update every 15 months, pOus every 4 months. Both last shipped on September 21, 2026.
| Parameter | Additive Drum Machine | pOus |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 15 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Giovanny Bermudez | Satoshi Kajii |
Customer experience
Additive Drum Machine
pOus
In-app purchases
Additive Drum Machine
No in-app purchases
pOus
No in-app purchases









