Comparison

Voice Synth Modular vs Otamatone Studio

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

Head to head
About

Voice Synth Modular

Transform your voice into a musical instrument with a suite of advanced audio effects. Create robotic voices, harmonies, and unique soundscapes using only your voice. Save and share your creations, or integrate them into your digital audio workstation.

Highlights
  • Live voice processing
  • Vocoders
  • Auto Pitch
  • Harmonizing Pitch Shift
  • Speed-Shift Sampling
  • Create organic soundscapes
  • Save and share creations
Features
Read full description

Voice Synth is a professional live voice processor and music synthesizer played by your voice. With the vast set of integrated tools including Vocoders, Auto Pitch, Harmonizing Pitch Shift and Speed-Shift Sampling, you can • Sing in Tune like P-Tain & vocoded like Duft-Pank • Speak with Hollywood-quality Robot voices like 1978 Cylons • Play by Voice, no fingers needed: scream to play rock guitar, hum a church organ • Make professional funny voices: animal, evil, weird & much more • Create unique organic and rhythmic soundscapes • Sing multiple voices in harmony within any musical scale • Sample, speed shift and dress up your beatboxing to create the strangest rhythms inspiring new compositions • Live-pause and stroboscope your voice • Save and share your creations as presets and audio files • Use all of the above in your DAW and audio setup via Audio Units & MIDI This "Modular" version of Voice Synth offers a free unlimited-time tryout of all effects on prerecorded samples, while all other functions are unlocked by a single In-App-Purchase. On Voice Synth you will find no conventional ADSR, LFOs or filters. Even the keyboard is optional. Instead, Voice Synth uses the most expressive all-in-one tool you were born with: your voice! It's unique so be ready for a jump in voice creativity, sound design and rhythmic inspiration. To give you an easy start in this adventure, we included over 250 factory presets! Speak, sing, hum and scream live into the mic, and start exploring the unconventional controls: 24-band vintage analog modeling vocoders, Auto Pitch Tracking, live-voice-pause, speed-shift sampler, multiple voice harmony arranger, spectrum stroboscope, pitch and formant shifter, 24-band equalizer, classic FX as distortion/delay/chorus/reverb, and an extensive vocoder designer with oscilloscope. We included a manual for in-depth use. Musicians, DJs, sound designers, voice artists: Voice Synth is a must-have in your audio toolbox! Qneo voicesynth.com TECHNICAL SPECS • Engine 2x32 bit 44.1 kHz poly x24 • All effects fully integrated, simultaneous, live, realtime, low-latency • Background audio (iOS) • Manual • Audio Unit V3, instrument & effect, parameter automation • Audio routing • Midi • Repeater, anti-audio-feedback • Noise gate manual/auto • Keyboard 1.5-2.5 oct (midi 10), hold/mono/poly • Tapes to record/export your performance • 250+ factory presets, unlimited user presets, import/export INTEGRATED EFFECTS • 4 vintage analog modeling vocoders 24 bands 5th order filters (Natural Robot Breath Designer) • Auto Pitch, track/fix/double/inverse pitch • Multiple Voice Harmonizer, any musical scale (choirs, rich 70's vocoder sounds) • Speed-Shift Sampler ±800%, pause/zoom/loop/hold • Live-pause & strobo voice • Pitch Shifter 8 octaves (e.g. lion/gender/child/baby/duck) • Formant Shifter adapt spectrum ±1 octave (child to giant) • Registers 4 octaves (add brilliance, chords) • Arpeggiator pattern/gate/speed/grouping • Equalizer 24 bands, 10 presets (loudness, low-pass, telecom, etc) • Autogain/Compressor, Clip/Distortion, Stereo Panning, Delay, Chorus, Reverb • Slew rate: special vocoder reverb (plucked strings, wind, thunder, storms) • Mic thru and Vocoder mix to add-in your unprocessed voice (e.g. for beat-boxing) • Sync rhythmic effect timing DESIGNER VOCODER • Realtime oscilloscope • Sine/square/triangle/sawtooth, adjustable frequency/harmonics/clip/width/skew/slope • Noise white/voiced, adjustable filter/clipping • Mix additive/maximum/multiplicative synthesis • Test mode, design/play without voice

About

Otamatone Studio

This app allows you to connect your Otamatone Techno or Neo to your device to change its sound. Explore various instrument sounds, scales, and effects to enhance your musical performances. It also includes built-in rhythms for jamming and a virtual keyboard option.

Highlights
  • Change Otamatone sound with various instruments
  • Apply different scales for perfect pitch
  • Add effects like reverb and distortion
  • Jam along to built-in rhythms
  • Use a virtual keyboard for playing
  • Supports Otamatone neo and Techno models
Read full description

Here comes Otamatone Studio, the official app for the note-shaped instrument Otamatone. Change your sound! -About the app Connect your Otamatone Techno or Otamatone neo to your iPhone or iPad, start Otamatone Studio and play your Otamatone with the sound of various instruments or jam along to built-in rhythms. We got rid of all the complexities of most available synthesizer simulations and created an app that even beginners will master. It’s really simple! Access all functions via a cute graphical interface that feels like your Otamatone called over a few friends for a basement jam. -Supported models ・Otamatone neo ・Otamatone Techno Caution- You will download a free version of the app. The complete set of features can be unlocked via in-app purchase. -Main features ●Different sounds Play your Otamatone with the sound of various instruments. Gather your friends and form a band! ・Instruments(Free Version) Otamatone / Electric Guitar / Alto Sax ・Instruments (Full Version) Otamatone / Electric Guitar / Alto Sax Violin / Flute / Synthesizer Trumpet / Drums / Cat Display method Tap the instrument icon on the right side of the main screen. ●Different scales With scales your performance will always sound spot on. Play like a pro without all the practicing! ・Scales(Free Version) Otamatone / 12 Tone / Minor Blues ・Scales (Full Version) Otamatone / 12 Tone / Minor Blues Minor / Major / Major Blues Whole Tone / Pentatonic / Japan Display method Tap the face of the Otamatone on the main screen. ●Effects You can alter your Otamatone’s sound with 3 kinds of effects. Push your performance to new heights! ・Reverb Ever wanted to sound like performing in a concert hall or a bathroom? Look no further! (Reverb is the only effect in the free version.) ・Delay Adds an echo to your sound. ・Distortion The trademark of any rock song. Sound like an electric guitar. Display method Tap the tail of the Otamatone on the main screen. ●Built-in rhythms You can choose between different rhythms to play along to. Be your own personal band! ・Rhythms (Free Version) Rock01 / Techno01 / Japan ・Rhythms (Full Version) Rock01 / Techno01 / Japan Rock02 / Samba / Salsa March / India / Happy Birthday Happy Birthday is a band arrangement. Surprise someone special to you by playing along to this tune on his/her birthday and you will certainly leave an impression! Display method Tap the rhythm icon on the main screen. ●Virtual keyboard No Otamatone at hand? Display the virtual keyboard and play with Otamatone Studio nevertheless. Even better The Otamatone on the main screen will move its mouth during your performance. It doesn’t get much cuter than that! Display method Tap the stem of the Otamatone on the main screen. Hold your smartphone sideways to improve playability. ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ●Further instructions Further instructions can be found on the Otamatone website. Check it out! www.otamatone.jp/otstudio/en (C)MAYWA DENKI Produced by CUBE Co., Ltd. Powered by sonosaurus.com

Screenshots

Voice Synth Modular4 screens
Otamatone Studio4 screens

Verdict

The call

The clearest difference is update cadence: Otamatone Studio at every 6 days against Voice Synth Modular's monthly. Otamatone Studio also leads on iOS requirement (11.0 vs 16.6). Voice Synth Modular's advantage is ratings volume (3K vs 49) and rating (4.2 vs 3.9). On price, review sentiment, 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

Both are free to download. Voice Synth Modular sells 2 one-off in-app purchases and Otamatone Studio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Voice Synth Modular holds the better App Store score, 4.2 against 3.9. That said, the two scores are not equally well evidenced: Voice Synth Modular has 3K ratings behind it against 49, so its average is the more settled of the two. Written reviews complicate that: 41% of Voice Synth Modular's written reviews are positive against 46% of Otamatone Studio's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Voice Synth Modular ships an update monthly, Otamatone Studio every 6 days. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Voice Synth Modular versus Otamatone Studio: the parameters behind the verdict, then further details
ParameterVoice Synth ModularOtamatone Studio
PriceFreeFree
Rating4.2 (3K ratings) — better3.9 (49 ratings)
Positive reviews41.3% of reviews46.0% of reviews — better
Number of ratings3K — better49
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.611.0 — better
Further details — not scored
Size66 MB89 MB
Age rating4+4+
DeveloperQneoCUBE Co., Ltd.

Customer experience

Voice Synth Modular

All ratings3,044 ratings
Positive79.2%
Neutral5.1%
Negative15.7%
Written reviews310 reviews
Positive41.3%
Neutral5.8%
Negative52.9%

Otamatone Studio

All ratings49 ratings
Positive67.3%
Neutral10.2%
Negative22.4%
Written reviews50 reviews
Positive46.0%
Neutral20.0%
Negative34.0%

Bugs and requests

Voice Synth Modular

Reported bugs

4 issues
  • Crashes and freezes when using certain features
  • Microphone not detected or working properly
  • Imported audio files not playing back correctly
  • Presets and settings not saving or loading properly

Requested features

5 requests
  • Ability to record and process own voice
  • Deeper integration with music production apps
  • More customization and preset options
  • Better documentation and tutorials
  • System audio capture and processing

Otamatone Studio

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Voice Synth Modular

One-time2
  • Pro ToolsFree
  • Upgrade$8.99
1 purchases

Otamatone Studio

One-time1
  • Full Features$3.99

Questions

Is Voice Synth Modular free?
Voice Synth Modular is free to download, with in-app purchases available.
Is Otamatone Studio free?
Otamatone Studio is free to download, with in-app purchases available.
Which has better reviews, Voice Synth Modular or Otamatone Studio?
Voice Synth Modular is rated higher. Voice Synth Modular averages 4.2 out of 5 from 3K ratings, while Otamatone Studio averages 3.9 from 49 ratings.
Do Voice Synth Modular or Otamatone Studio have ads?
Neither Voice Synth Modular nor Otamatone Studio shows ads.
Which is updated more often, Voice Synth Modular or Otamatone Studio?
Voice Synth Modular ships an update monthly, and Otamatone Studio every 6 days. Most recently, Voice Synth Modular was updated on October 12, 2026 and Otamatone Studio on October 13, 2026.

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