Comparison

iFretless Brass 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

iFretless Brass

This app allows string instrument players to create expressive music using a variety of brass and synth sounds. It features detailed sample libraries and advanced touch sensitivity for natural performance. Supports MIDI and Audio Unit integration for external devices and recording apps.

Highlights
  • Expressive brass and synth sounds
  • Detailed sample library
  • Advanced touch pressure detection
  • Natural vibrato and slides
  • MIDI input/output support
  • Audio Unit integration
Features
Read full description

iFretless Brass enables guitar and string instrument players to play expressive music with a variety of instruments. It includes a detailed library of samples from real brass instruments as well as a collection of classic synth sounds. Each note is sampled at nine different volume levels in order to capture the full range of tones produced by the original instrument. Key features: 1) Supports MIDI input and output for interface with external devices such as digital pianos and electronic wind instruments as well as virtual MIDI compatible iOS apps. 2) A patented algorithm uses the accelerometer accurately detects touch pressure on the screen and respond with dynamic selection of samples of the appropriate timbre and volume. 3) Responds to fretless vibrato and between-note slides in a natural way, making it one of the most expressive performance interfaces available anywhere. 4) MPE MIDI support 5) Audio Unit support allows you to use the app as a virtual instrument inside of audio recording and mixing apps such as GarageBand Sound library includes: Euphonium Trombone Trumpet Trumpet 2 Flugelhorn Tuba French Horn Muted Trumpet and a collection of classic synth samples

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

iFretless Brass4 screens
Deep Synth3 screens

Verdict

The call

The clearest difference is rating: iFretless Brass at 4.9 against Deep Synth's 4.0. iFretless Brass also leads on review sentiment (68% vs 50%) and ratings volume (10 vs 2). Deep Synth's advantage is price ($4.99 vs $9.99) and iOS requirement (10.0 vs 15.6). On update cadence, ads, in-app purchases 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

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

ReceptionRating · Positive reviews · Number of ratings

iFretless Brass holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: iFretless Brass has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of iFretless Brass's written reviews are positive against 50% of Deep Synth's.

UpkeepUpdate frequency

iFretless Brass ships an update every 6 weeks, Deep Synth monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard5 real differences · 5 level
iFretless Brass versus Deep Synth: the parameters behind the verdict, then further details
ParameteriFretless BrassDeep Synth
Price$9.99$4.99 — better
Rating4.9 (10 ratings) — better4.0 (2 ratings)
Positive reviews68.0% of reviews — better50.0% of reviews
Number of ratings10 — better2
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.610.0 — better
Further details — not scored
Size241 MB9 MB
Age rating4+4+
DeveloperBlue Mangoo Consulting Company LimitedAleksandar Mlazev

Customer experience

iFretless Brass

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews25 reviews
Positive68.0%
Neutral8.0%
Negative24.0%

Deep Synth

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

In-app purchases

None

iFretless Brass

No in-app purchases

None

Deep Synth

No in-app purchases

Questions

Is iFretless Brass free?
iFretless Brass costs $9.99, with no in-app purchases.
Is Deep Synth free?
Deep Synth costs $4.99, with no in-app purchases.
Which has better reviews, iFretless Brass or Deep Synth?
iFretless Brass is rated higher. iFretless Brass averages 4.9 out of 5 from 10 ratings, while Deep Synth averages 4.0 from 2 ratings.
Do iFretless Brass or Deep Synth have ads?
Neither iFretless Brass nor Deep Synth shows ads.
Which is updated more often, iFretless Brass or Deep Synth?
iFretless Brass ships an update every 6 weeks, and Deep Synth monthly. Most recently, iFretless Brass was updated on November 1, 2026 and Deep Synth on November 2, 2026.

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