Comparison

Deep Synth vs MIDI FX PRO

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

Head to head
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.

About

MIDI FX PRO

This app is a powerful MIDI workstation for iOS and Mac, allowing users to control and process MIDI signals. It offers features like harmonization, transposition, arpeggiation, and sequencing for external or virtual synths. It also includes internal instruments and effects for mobile music creation.

Highlights
  • MIDI signal processing
  • Harmonize, Transpose, Arpeggiate
  • Sequencer for synths
  • Delay/looper
  • Internal instruments (drums, piano, synth)
  • Filter notes by velocity
Read full description

Buy once and get the iOS and Mac apps (with Family Sharing) This is the Unlocked Version of MIDI FX. You can buy this version instead of unlocking the free one through IAP Control your MIDI signals and process them in any combination of ways: Harmonize, Transpose, Arpeggiate, etc... Or use the Sequencer to play any external or virtual synth. Use a MIDI interface to unlock the power of the app to control multiple synths with one keyboard, play one note and generate chords, basslines, etc... Use the delay/looper or filter notes based on velocity or other parameters to send to different synths/effects. A MIDI workstation in your pocket (or your iPad/Mac) You can also use some internal instruments (drums sampler, piano or synth) if you are away from your MIDI gear, and sequence whole songs inside the app, or use other synth apps as input/output for MIDI FX. Your imagination is the limit!

Screenshots

Deep Synth3 screens
MIDI FX PRO1 screens

Verdict

The call

The clearest difference is rating: MIDI FX PRO at 5.0 against Deep Synth's 4.0. Deep Synth's advantage is price ($4.99 vs $9.99) and iOS requirement (10.0 vs 14.7). On review sentiment, ratings volume, update cadence and ads 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

Deep Synth costs $4.99 and MIDI FX PRO $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MIDI FX PRO holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Deep Synth versus MIDI FX PRO: the parameters behind the verdict, then further details
ParameterDeep SynthMIDI FX PRO
Price$4.99 — better$9.99
Rating4.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews50.0% of reviews
Number of ratings23 — better
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS10.0 — better14.7
Further details — not scored
Size9 MB263 MB
Age rating4+4+
DeveloperAleksandar MlazevJorge Arroyo

Customer experience

Deep Synth

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

MIDI FX PRO

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Deep Synth

No in-app purchases

None

MIDI FX PRO

No in-app purchases

Questions

Is Deep Synth free?
Deep Synth costs $4.99, with no in-app purchases.
Is MIDI FX PRO free?
MIDI FX PRO costs $9.99, with no in-app purchases.
Which has better reviews, Deep Synth or MIDI FX PRO?
MIDI FX PRO is rated higher. Deep Synth averages 4.0 out of 5 from 2 ratings, while MIDI FX PRO averages 5.0 from 3 ratings.
Do Deep Synth or MIDI FX PRO have ads?
Neither Deep Synth nor MIDI FX PRO shows ads.
Which is updated more often, Deep Synth or MIDI FX PRO?
Deep Synth ships an update monthly, and MIDI FX PRO monthly. Most recently, Deep Synth was updated on November 2, 2026 and MIDI FX PRO on November 3, 2026.

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