Comparison

Harmonium vs Mini Synthesizer for iPhone

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

Head to head
About

Harmonium

This app provides a virtual harmonium with customizable tuning for both Indian and Western music styles. It offers two distinct sound flavors and features automatic transposition for playing in any key. Enjoy playing along with your own music library.

Highlights
  • Customizable tuning for Indian and Western scales
  • Two sound flavors: Traditional Harmonium & Modern Flute Organ
  • Automatic transposition for playing in any key
  • Adjustable tuning frequency (380 Hz - 470 Hz)
  • Play along with iPhone/iPad music library
  • Single or double reed options
Features
Read full description

Harmonium will enable you to play different styles of harmonium, perfectly in tune. If you're interested to play indian music (karnatac or hindusthani), this is the perfect "travel" harmonium you need. Tune your harmonium such as the great singer masters where doing, in the indian harmonic scale. You select harmonic scale, and the base note. That's it. If you prefer to play western music, religious music, then tune the harmonium to the common tempered scale. You'll have a big church harmonium in your pocket! Our harmonium can do automatic transposition. You can play in any key with the same keyboard position. You just need to select the note to play on the C key of the keyboard. Harmonium contains two sound flavours : - Traditional Harmonium, with deep sound of original reeds - Modern flute organ, simpler, heavenly Each sound flavour has a simple set of reeds, or double (with octave). The harmonium can be tuned between A 380 Hz and 470 Hz. An option enables harmonium to play while your iPhone / iPad is playing music. This is very convenient for training yourself to accompagny your prefered artists! Play karaoke with your harmonium! For getting the best sound from this instrument, it is advised to use a good headphone or a pair of speakers with loudspeaker. We should distinguish Harmonium from Shruti (or sruti). Actually, the harmonium is a melody instrument and is usually used to follow the melody played by the soloist (sitar, bansuri, vocal, tabla, ...). The Shruti is only used to play continuously a set of notes (drone) for create the musical atmosphere.

About

Mini Synthesizer for iPhone

This app digitally recreates a classic analog synthesizer, offering vintage sound effects and modern updates. It features intuitive controls for pitch, filters, and delay, allowing for extensive sound customization. Ideal for musicians and enthusiasts seeking authentic analog tones.

Highlights
  • Faithful digital re-creation of a cult-classic analog synthesizer
  • Vintage synth sounds with modern updates
  • Intuitive controls with 12 sliders and 9 switches
  • Extensive sound shaping for pitch, filters, and delay
  • 25 presets and unlimited user preset storage
  • Audiobus capabilities
Features
Read full description

Electro-Harmonix, a pioneer since 1968 in the field of sound effects pedals for musicians, has produced an app which is a faithful digital re-creation of their circa 1980 analog cult-classic, The MINI-SYNTHESIZER. Available for iPad and iPhone (IOS version 15.0 or later), the EHX MINI-SYNTHESIZER accurately delivers all the vintage synth sounds of the original plus modern updates. EHX President and Founder, Mike Matthews stated: “Fans of vintage synths will appreciate the apps ability to recreate the original’s warm analog sounds and deep funky bass, but because it’s so affordable ($2.99 for phone, $4.99 for tablet) and user-friendly, parents, educators and non-musicians will love it, too.” The MINI-SYNTHESIZER app comes with 25 presets and the ability to store an almost unlimited number of user presets programs. Audiobus capabilities are also included. Intuitive, flexible and powerful control are provided by the MINI-SYNTHESIZER’s 12 sliders and nine switches. Here’s a breakdown of the user interface: OSC Section - PITCH slider lets the player raise or lower the pitch of the note by +/- 1 octave - SUB-OCTAVE slider introduces a note one octave below what’s being played for extra bottom - OCTAVE UP switch causes the note being played to jump up one octave. - TUNE knob lets the player tune the MINI-SYNTHESIZER to other instruments and sound sources over a +/- 50 cents range. FILTERS Section - PHASE RATE slider adjusts the speed of the phase shifter - FILTER START sets the start frequency of the filter sweep - FILTER STOP sets the stop frequency of the filter sweep - SWEEP RATE controls the speed of the filter sweep - PHASE switch turns the effect on/off - 2X FILTER switch changes how the audio passes through the filters (either in parallel or in series) - Q switch sets the amount of resonance on the filter sweep - RETRIGGER switch turns the filter retrigger on/off DELAY Section - TIME slider adjusts the delay time up to two seconds - FEEDBACK controls the number of echo repeats - BLEND adjusts the mix of the original signal and the echo repeats - DELAY switch turns the effect on/off - TIME label can be tapped for tap tempo REVERB Section - AMOUNT slider adjusts the reverb effect level - BLEND slider controls the mix of the wet and dry signals - REVERB switch turns reverb on/off - REVERB>DELAY switch lets the user place either Delay or Reverb first in the effects chain for a variety of cool sound effects. MISCELLANEOUS CONTROLS - VOL (Volume) slider adjusts the MINI-SYNTHESIZER’s overall sound output level - POLY/MONO switch toggles between polyphonic (four notes can be played simultaneously) or monophonic (only one note can be played at a time) modes - PRESETS pop-down menu displays the presets available and allows the user to instantly select one - HORIZONTAL slider lets the player adjust the keyboards sounding range over an expansive eight-octave range. - RIBBON Interface lets the player perform portamento (glide up or down to pitch), vibrato and other expressive playing. The easy-to-use Electro-Harmonix MINI-SYNTHESIZER App is loaded with great sounds and features and is sure to appeal to serious musicians and non-musicians alike. LIMITATIONS - InterApp Audio experiences periodic crashes and graphics issues. - The MINI SYNTH runs at 48 kHz sample rate; using the MINI SYNTH in an environment with 44.1 kHz sample rate (such as Garageband for iOS) may cause aliasing. - Presets saved in the standalone app cannot be accessed when using the MINI SYNTH as an AudioUnit, and vice versa. DOWNLOADING iPHONE VERSION ON iPAD - The iPhone version is not meant to perform optimally on the iPad. Be aware that if you download the iPhone version on the iPad you are more prone to glitches and crashes than having the iPad version on the iPad.

Screenshots

Harmonium3 screens
Mini Synthesizer for iPhone3 screens

Verdict

The call

The clearest difference is rating: Mini Synthesizer for iPhone at 4.5 against Harmonium's 3.0. Harmonium's advantage is update cadence (every 6 weeks vs every 4 months) and price ($0.99 vs $2.99). On review sentiment, ratings volume, ads and in-app purchases 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

Harmonium costs $0.99 and Mini Synthesizer for iPhone $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Mini Synthesizer for iPhone holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews complicate that: 39% of Harmonium's written reviews are positive against 36% of Mini Synthesizer for iPhone's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Harmonium ships an update every 6 weeks, Mini Synthesizer for iPhone every 4 months. Both last shipped on October 19, 2026.

Scorecard4 real differences · 6 level
Harmonium versus Mini Synthesizer for iPhone: the parameters behind the verdict, then further details
ParameterHarmoniumMini Synthesizer for iPhone
Price$0.99 — better$2.99
Rating3.0 (3 ratings)4.5 (4 ratings) — better
Positive reviews38.8% of reviews — better35.9% of reviews
Number of ratings34 — better
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size13 MB14 MB
Age rating4+4+
DeveloperC.BARATAYElectro-Harmonix

Customer experience

Harmonium

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews98 reviews
Positive38.8%
Neutral3.1%
Negative58.2%

Mini Synthesizer for iPhone

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews39 reviews
Positive35.9%
Neutral2.6%
Negative61.5%

In-app purchases

None

Harmonium

No in-app purchases

None

Mini Synthesizer for iPhone

No in-app purchases

Questions

Is Harmonium free?
Harmonium costs $0.99, with no in-app purchases.
Is Mini Synthesizer for iPhone free?
Mini Synthesizer for iPhone costs $2.99, with no in-app purchases.
Which has better reviews, Harmonium or Mini Synthesizer for iPhone?
Mini Synthesizer for iPhone is rated higher. Harmonium averages 3.0 out of 5 from 3 ratings, while Mini Synthesizer for iPhone averages 4.5 from 4 ratings.
Do Harmonium or Mini Synthesizer for iPhone have ads?
Neither Harmonium nor Mini Synthesizer for iPhone shows ads.
Which is updated more often, Harmonium or Mini Synthesizer for iPhone?
Harmonium ships an update every 6 weeks, and Mini Synthesizer for iPhone every 4 months. Most recently, Harmonium was updated on October 19, 2026 and Mini Synthesizer for iPhone on October 19, 2026.

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