Deep Synth vs MIDI FX PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Real-time wave form editing
- Simple envelope filter
- Reverb and tremolo effects
- Polyphonic keyboard with 5 octaves
- MIDI keyboard support
- AUV3 Audio Unit instrument
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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.
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.
- MIDI signal processing
- Harmonize, Transpose, Arpeggiate
- Sequencer for synths
- Delay/looper
- Internal instruments (drums, piano, synth)
- Filter notes by velocity
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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
Verdict
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
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.
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.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Deep Synth | MIDI FX PRO |
|---|---|---|
| Price | $4.99 — better | $9.99 |
| Rating | 4.0 (2 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.0 — better | 14.7 |
| Further details — not scored | ||
| Size | 9 MB | 263 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Jorge Arroyo |
Customer experience
Deep Synth
MIDI FX PRO
In-app purchases
Deep Synth
No in-app purchases
MIDI FX PRO
No in-app purchases
Questions
Is Deep Synth free?
Is MIDI FX PRO free?
Which has better reviews, Deep Synth or MIDI FX PRO?
Do Deep Synth or MIDI FX PRO have ads?
Which is updated more often, Deep Synth or MIDI FX PRO?
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