# Chordana Viewer vs Additive Drum Machine

The clearest difference is review sentiment: Additive Drum Machine at 100% against Chordana Viewer's 25%. Additive Drum Machine also leads on rating (5.0 vs 1.3) and in-app purchases (none vs 10). Chordana Viewer's advantage is update cadence (every 2 months vs every 15 months) and iOS requirement (11.0 vs 14.5). On ratings volume, ads, monetization model and device support there is nothing between them.

Chordana Viewer costs $3.99 and Additive Drum Machine $2.99 up front. Chordana Viewer sells 10 one-off in-app purchases. Additive Drum Machine asks for nothing beyond the download.

Additive Drum Machine holds the better App Store score, 5.0 against 1.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 25% of Chordana Viewer's written reviews are positive against 100% of Additive Drum Machine's.

Chordana Viewer ships an update every 2 months, Additive Drum Machine every 15 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chordana Viewer | Additive Drum Machine |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [1.3 (3 ratings)](https://appshunter.io/ios/app/chordana-viewer/id711042441/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/additive-drum-machine/id1658242894/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 15 months |
| Monetization | Paid | Paid |
| Size | 461 MB | 2 MB |
| Requires iOS | **11.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CASIO COMPUTER CO., LTD.](https://appshunter.io/developer/456569836) | [Giovanny Bermudez](https://appshunter.io/developer/1658242896) |

## What reviewers say

### Chordana Viewer

[App page](https://appshunter.io/ios/app/chordana-viewer/id711042441)

This application analyzes audio files to automatically generate chord charts for your favorite songs. It displays chords in real-time as the music plays and allows for manual editing and instrument pad playback.

**Highlights:** Automatic chord chart generation, Real-time chord display, Chord editing and manual input, Instrument pad playback, Tempo, key, and vocal balance customization, Email sharing and AirPrint compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CLEAN GUITAR | $0.99 | one-time |
| VA Synth 1 | $0.99 | one-time |
| ROTARY DRAWBAR 1 | $0.99 | one-time |
| XYLOPHONE | $0.99 | one-time |
| VIBRAPHONE | $0.99 | one-time |
| SYNTH STRINGS | $0.99 | one-time |
| SYNTH BRASS | $0.99 | one-time |
| PIANO PAD | $0.99 | one-time |
| STRINGS PIANO | $0.99 | one-time |
| STRINGS | $0.99 | one-time |


### Additive Drum Machine

[App page](https://appshunter.io/ios/app/additive-drum-machine/id1658242894)

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.

**Highlights:** Additive rhythm concept, Traditional drum machine interface, Customizable sequence length, Step sequencing, Odd meter support, Symmetrical and asymmetrical rhythms

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Chordana Viewer free?

Chordana Viewer costs $3.99, and also offers in-app purchases.

### Is Additive Drum Machine free?

Additive Drum Machine costs $2.99, with no in-app purchases.

### Which has better reviews, Chordana Viewer or Additive Drum Machine?

Additive Drum Machine is rated higher. Chordana Viewer averages 1.3 out of 5 from 3 ratings, while Additive Drum Machine averages 5.0 from 3 ratings.

### Do Chordana Viewer or Additive Drum Machine have ads?

Neither Chordana Viewer nor Additive Drum Machine shows ads.

### Which is updated more often, Chordana Viewer or Additive Drum Machine?

Chordana Viewer ships an update every 2 months, and Additive Drum Machine every 15 months. Most recently, Chordana Viewer was updated on October 27, 2026 and Additive Drum Machine on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*