Electron ECHO mini piano vs Mini Synthesizer for iPhone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electron ECHO mini piano
Experience a simulated musical toy from the 1980s, complete with authentic synthesized sounds and optional battery depletion detuning. Learn classic and modern melodies with a free songbook and enjoy features like reverb and octave shifts.
- Simulated 1980s musical toy
- Authentic synthesizer sound
- Optional battery depletion detuning
- Free songbook with melodies
- Reverb effect
- Octave down shift
- Sub-oscillator for bass tones
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Electron ECHO mini piano is a simulated version of a popular musical toy from the 1980's. Just like the real thing, it (optionally) detunes as your battery depletes! Includes a FREE songbook with instructions for classic and modern melodies and an extensive essay on the original device. IT'S A SYNTH Modeled after the original device sound through wave shape analysis. No cheap samples, it's a synthesizer! FREE SONGBOOK Includes free songbook. Learn how to play your favorite melodies. More songs added in future updates, free of charge! FOUR SKIN COLORS Choose your favorite color from four available skins! REVERB EFFECT Pretend you're playing in a large hall! BACKGROUND AUDIO Play along with music from iTunes, Spotify or any other music app you might use! OCTAVE DOWN Too pitchy sounding for ya? With the flip of a switch you can tune the keyboard down by one full octave! SUB-OSCILLATOR Want to get a bit of electro bass going? Optionally add a square wave sound tuned one octave below the notes you play! Get your retro on, get back to the 80's with Electron ECHO mini piano NOW!
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.
- 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
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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
Verdict
The clearest difference is review sentiment: Electron ECHO mini piano at 93% against Mini Synthesizer for iPhone's 36%. Electron ECHO mini piano also leads on rating (5.0 vs 4.3) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases, monetization model and device support 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
Electron ECHO mini piano costs $1.99 and Mini Synthesizer for iPhone $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Electron ECHO mini piano holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 93% of Electron ECHO mini piano's written reviews are positive against 36% of Mini Synthesizer for iPhone's.
Electron ECHO mini piano ships an update every 2 months, Mini Synthesizer for iPhone every 4 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | Electron ECHO mini piano | Mini Synthesizer for iPhone |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 5.0 (11 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 93.3% of reviews — better | 35.9% of reviews |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 6 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Emil Korngold | Electro-Harmonix |
Customer experience
Electron ECHO mini piano
Mini Synthesizer for iPhone
In-app purchases
Electron ECHO mini piano
No in-app purchases
Mini Synthesizer for iPhone
No in-app purchases
Questions
Is Electron ECHO mini piano free?
Is Mini Synthesizer for iPhone free?
Which has better reviews, Electron ECHO mini piano or Mini Synthesizer for iPhone?
Do Electron ECHO mini piano or Mini Synthesizer for iPhone have ads?
Which is updated more often, Electron ECHO mini piano or Mini Synthesizer for iPhone?
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