Comparison

Midi Tool Box vs Deep Synth

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Midi Tool Box

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
Read full description

Midi Tool Box is an integrated app for managing and controlling MIDI devices and data, and offers the following functions: - MIDI event monitor - MIDI status monitor - SysEx editor & librarian - MIDI recorder & player - Program Change sender - Generic MIDI CC controller - Generic resetter - Support Core MIDI & Network MIDI - Open In:send Midi(.mid)/SysEx(.syx) file to MidiToolBox from other apps. - Universal App Monitoring functions are provided with a MIDI filter, making it easier to check your data. Midi Tool Box has a wide range of applications, including testing of MIDI devices, data management, music production, live performances, and maintenance of non-audio MIDI devices. [Device info] Following devices are tested. But we do not necessarily guarantee that the MidiToolBox work with these devices. YAMAHA i-MX1 - OK USB Device via Apple iPad Camera Connection Kit Alesis ALESIS USB-MIDI CABLE CME CME U2MIDI - OK

About

Deep Synth

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
Read full description

Unique synth with AUV3 (Audio Unit) and midi keyboard support! You can touch and change the wave and hear the difference. Deep Synth also has: - simple envelope filter - reverb effect - tremolo sound effect - hair - high frequency modulation. - 5 points wave form modulation - polyphonic keyboard - 5 octaves range selector - point vibe to make your wave dynamic - build-in resonator effect - supports MIDI keyboards via USB (full velocity and pitch shift support) - works as Audio Unit instrument plug-in AUV3 The sound generator inside the synthesizer is producing the exact wave form as the one you have created. You can control the position and width of the picks in real time. The synth app has fast and capable piano keyboard. It is fully polyphonic and you can play in 5 octaves.

Screenshots

Midi Tool Box4 screens
Deep Synth3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Midi Tool Box ships an update every 5 months, Deep Synth monthly. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
Midi Tool Box versus Deep Synth: the parameters behind the verdict, then further details
ParameterMidi Tool BoxDeep Synth
Price$9.99$4.99 — better
Rating3.4 (5 ratings)4.0 (2 ratings) — better
Positive reviews46.9% of reviews50.0% of reviews — better
Number of ratings5 — better2
Update frequencyEvery 5 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better10.0
Further details — not scored
Size3 MB9 MB
Age rating4+4+
DeveloperART Teknika Inc.Aleksandar Mlazev

Customer experience

Midi Tool Box

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews32 reviews
Positive46.9%
Neutral12.5%
Negative40.6%

Deep Synth

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

2 purchases

Midi Tool Box

One-time2
  • Program Change Panel$1.99
  • Control Change Panel$1.99
None

Deep Synth

No in-app purchases

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 25, 2026 and Deep Synth on October 21, 2026.

Other comparisons