# Midi Tool Box vs Deep Synth

The clearest difference is rating: Deep Synth at 4.0 against Midi Tool Box's 3.4. Deep Synth also leads on in-app purchases (none vs 2) and update cadence (monthly vs every 5 months). Midi Tool Box's advantage is iOS requirement (6.0 vs 10.0). On review sentiment, ratings volume, ads and monetization model there is nothing between them.

Midi Tool Box costs $9.99 and Deep Synth $4.99 up front. Midi Tool Box sells 2 one-off in-app purchases. Deep Synth asks for nothing beyond the download.

Deep Synth holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 47% of Midi Tool Box's written reviews are positive against 50% of Deep Synth's.

Midi Tool Box ships an update every 5 months, Deep Synth monthly. The most recent releases landed on October 30, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Midi Tool Box | Deep Synth |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/midi-tool-box/id443115330/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/deep-synth-fm-synthesizer/id1203273984/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 46.9% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 3 MB | 9 MB |
| Requires iOS | **6.0** | 10.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ART Teknika Inc.](https://appshunter.io/developer/405894827) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## What reviewers say

### Midi Tool Box

[App page](https://appshunter.io/ios/app/midi-tool-box/id443115330)

This app provides a comprehensive suite of tools for managing and controlling MIDI devices and data. It includes features for monitoring MIDI events and status, editing and storing SysEx data, recording and playing MIDI, and sending program changes. It supports Core MIDI and Network MIDI, and can import MIDI files from other applications.

**Highlights:** MIDI event monitor, SysEx editor & librarian, MIDI recorder & player, Program Change sender, Generic MIDI CC controller, Core MIDI & Network MIDI support, Open In for MIDI/SysEx files

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Program Change Panel | $1.99 | one-time |
| Control Change Panel | $1.99 | one-time |


### Deep Synth

[App page](https://appshunter.io/ios/app/deep-synth-fm-synthesizer/id1203273984)

Create unique sounds with this FM synthesizer app. It features real-time wave manipulation, multiple sound effects, and MIDI keyboard support. Explore dynamic sound design with its intuitive interface.

**Highlights:** Real-time wave form editing, Simple envelope filter, Reverb and tremolo effects, Polyphonic keyboard with 5 octaves, MIDI keyboard support, AUV3 Audio Unit instrument

**In-app purchases:** none


## Frequently asked questions

### Is Midi Tool Box free?

Midi Tool Box costs $9.99, and also offers in-app purchases.

### Is Deep Synth free?

Deep Synth costs $4.99, with no in-app purchases.

### Which has better reviews, Midi Tool Box or Deep Synth?

Deep Synth is rated higher. Midi Tool Box averages 3.4 out of 5 from 5 ratings, while Deep Synth averages 4.0 from 2 ratings.

### Do Midi Tool Box or Deep Synth have ads?

Neither Midi Tool Box nor Deep Synth shows ads.

### Which is updated more often, Midi Tool Box or Deep Synth?

Midi Tool Box ships an update every 5 months, and Deep Synth monthly. Most recently, Midi Tool Box was updated on October 30, 2026 and Deep Synth on October 21, 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.*