# Midiflow vs SWAM Viola Section

The clearest difference is price: Midiflow at $7.99 against SWAM Viola Section's $44.99. Midiflow also leads on iOS requirement (9.0 vs 15.0). SWAM Viola Section's advantage is in-app purchases (none vs 3). On update cadence, ads and device support there is nothing between them.

Midiflow costs $7.99 and SWAM Viola Section $44.99 up front. Midiflow sells 3 one-off in-app purchases. SWAM Viola Section asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 30, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Midiflow | SWAM Viola Section |
| --- | --- | --- |
| Price | **$7.99** | $44.99 |
| Rating | **[4.0 (39 ratings)](https://appshunter.io/ios/app/midiflow/id879915554/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 58.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 188 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Doerr](https://appshunter.io/developer/622204117) | [Audio Modeling](https://appshunter.io/developer/1326331126) |

## What reviewers say

### Midiflow

[App page](https://appshunter.io/ios/app/midiflow/id879915554)

This app enables seamless MIDI data transfer between different applications on your device. It allows for app synchronization, routing MIDI from sequencers to synths, and assigning keyboard zones. Users can save and recall configurations, and monitor MIDI activity.

**Highlights:** App-to-app MIDI routing, MIDI clock synchronization, Channel filtering and remapping, Note and velocity manipulation, Custom virtual MIDI ports, Preset saving and recall, Controller filtering and remapping (in-app purchase)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Send Controller On Load | $1.99 | one-time |
| Controller Conditions | $2.99 | one-time |
| Controller Remapping | $3.99 | one-time |

**What reviewers like**

- 👍 Comprehensive MIDI routing
- 💡 Flexible MIDI manipulation
- 🚀 Powerful functionality
- ✨ Intuitive interface (for some)
- ✅ Works in background

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 App doesn't open
- 🐛 App closes immediately
- 🐛 Bugs and quirks
- 🐛 Unreliable for live use

**Reported bugs**

- Frequent crashes while editing CC map
- Mapped CCs dropped during performance
- App does not open on iOS 10
- Layout issues on iPhone 11 (no 'Done' button)
- App stops working, opens for 2 seconds then closes

**Requested features**

- AUv3 plugin version
- Mass sharing of songs
- Dark mode
- Ability to map multiple notes from one key press
- Individual transpose for split zones


### SWAM Viola Section

[App page](https://appshunter.io/ios/app/swam-viola-section/id6449464764)

**In-app purchases:** none


## Frequently asked questions

### Is Midiflow free?

Midiflow costs $7.99, and also offers in-app purchases.

### Is SWAM Viola Section free?

SWAM Viola Section costs $44.99, with no in-app purchases.

### Do Midiflow or SWAM Viola Section have ads?

Neither Midiflow nor SWAM Viola Section shows ads.

### Which is updated more often, Midiflow or SWAM Viola Section?

Midiflow ships an update every 5 weeks, and SWAM Viola Section every 5 weeks. Most recently, Midiflow was updated on September 30, 2026 and SWAM Viola Section on September 19, 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.*