Comparison

Voice Synth Modular vs Boimero

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

Boimero

Create original songs without singing by arranging notes and lyrics on a piano roll. This app generates AI singing voices using advanced models, allowing for offline music production on your mobile device. It supports various file formats and voicebanks for flexible music creation.

Highlights
  • Intuitive piano roll for melody creation
  • Lyric input for individual notes
  • Multi-track song building
  • Import UTAU, VOICEVOX, MIDI, UST, and MusicXML
  • AI singing voice generation with DiffSinger
  • Offline voice generation
  • Export and share finished audio
Features
Read full description

Boimero is a vocal synthesis and music creation app that lets you make original songs without recording your own voice. Simply arrange notes on the piano roll and enter lyrics to generate a singing voice. Whether you are new to songwriting or an experienced creator, Boimero makes it easy to produce music on your iPhone or iPad. Voice generation runs on your device, so you can compose songs and generate vocals offline. KEY FEATURES • Create melodies with an intuitive piano roll • Enter lyrics for individual notes • Build songs with multiple tracks • Import UTAU voicebanks • Generate AI singing voices with DiffSinger models • Use compatible VOICEVOX models • Import MIDI, UST, and MusicXML files • Adjust tempo, volume, and other song settings • Export and share your finished audio BOIMERO IS GREAT FOR • Creating songs without recording your own voice • Making vocal-synth and character-voice music on mobile • Working with UTAU and DiffSinger voice models • Editing MIDI and UST files away from your computer • Learning vocal synthesis and songwriting Turn your notes and lyrics into a singing voice. Create music freely with Boimero. Features and available voices may vary depending on your device, plan, and installed models. Terms of Use: https://www.apple.com/legal/internet-services/itunes/us/terms.html

Screenshots

Voice Synth Modular4 screens
Boimero2 screens

Verdict

The call

The clearest difference is review sentiment: Boimero at 88% against Voice Synth Modular's 41%. Boimero also leads on update cadence (daily vs monthly) and rating (4.6 vs 4.2). Voice Synth Modular's advantage is ads (none vs shown) and ratings volume (3.1K vs 578). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Voice Synth Modular sells 2 one-off in-app purchases and Boimero sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Boimero holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Voice Synth Modular has 3.1K ratings behind it against 578, so its average is the more settled of the two. Written reviews point the same way: 41% of Voice Synth Modular's written reviews are positive against 88% of Boimero's.

UpkeepUpdate frequency

Voice Synth Modular ships an update monthly, Boimero daily. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
Voice Synth Modular versus Boimero: the parameters behind the verdict, then further details
ParameterVoice Synth ModularBoimero
PriceFreeFree
Rating4.2 (3.1K ratings)4.6 (578 ratings) — better
Positive reviews41.3% of reviews88.4% of reviews — better
Number of ratings3.1K — better578
Update frequencyMonthlyDaily — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.615.1 — better
Further details — not scored
Size66 MB406 MB
Age rating4+4+
DeveloperQneoWaffle, LCC

Customer experience

Voice Synth Modular

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

Boimero

All ratings577 ratings
Positive91.5%
Neutral4.7%
Negative3.8%
Written reviews696 reviews
Positive88.4%
Neutral8.2%
Negative3.4%

User reviews

Voice Synth Modular

From 3.1K App Store ratings

What we love

  • 🔥 Powerful voice modulation
  • 🎨 Huge array of filters and sounds
  • 🎹 Ability to create beats from voice
  • 🎶 Excellent for vocal performances
  • 👍 Intuitive and user-friendly interface

Room to improve

  • 💰 Paid features hidden behind paywall
  • 🔒 Confusing upgrade process
  • 🐛 Unreliable recording and playback
  • 🤔 Unintuitive workflow and lack of guidance
  • 🤷‍♀️ Inconsistent functionality across updates

Boimero

From 578 App Store ratings

What we love

  • 👍 Easy to use
  • 🎨 Helpful for creating music
  • 💡 Good mobile vocaloid alternative
  • 🎶 Enjoyable for composing songs

Room to improve

  • 🐛 Buggy and glitchy at times
  • 💰 Too many ads and paid features
  • 🌐 Lack of English support

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

Boimero

Reported bugs

3 issues
  • Lyrics not working as expected
  • Audio playback issues after watching ads
  • Tutorial/help content not loading

Requested features

4 requests
  • More voicebank options
  • Improved pitch/tuning controls
  • Better lyric integration
  • English language support

In-app purchases

2 purchases

Voice Synth Modular

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

Boimero

Subscriptions3
  • ボイメロプレミアム$0.991 Month
  • ボイメロプレミアム$1.991 Month
  • ボイメロプレミアム$5.991 Year
One-time1
  • ボイメロプレミアム$9.99

Questions

Is Voice Synth Modular free?
Voice Synth Modular is free to download, with in-app purchases available.
Is Boimero free?
Boimero is free to download, with in-app purchases available.
Which has better reviews, Voice Synth Modular or Boimero?
Boimero is rated higher. Voice Synth Modular averages 4.2 out of 5 from 3.1K ratings, while Boimero averages 4.6 from 578 ratings.
Do Voice Synth Modular or Boimero have ads?
Boimero shows ads; Voice Synth Modular does not.
Which is updated more often, Voice Synth Modular or Boimero?
Voice Synth Modular ships an update monthly, and Boimero daily. Most recently, Voice Synth Modular was updated on October 26, 2026 and Boimero on October 25, 2026.

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