Comparison

Autoharp vs Voice Synth Modular

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

Head to head
About

Autoharp

Experience the realistic sound of an autoharp with intuitive chord buttons and strumming. Enhance your music with built-in effects and use it as a MIDI controller. Customize string and chord layouts for advanced control.

Highlights
  • Realistic autoharp sound
  • Chord buttons and strumming
  • Built-in chorus, delay, and reverb effects
  • MIDI controller output
  • Customizable string and chord layouts
  • Save and switch effect programs
Features
Read full description

This app works like a real autoharp: just push one of the chord buttons and strum! Autoharp uses high-quality audio samples and matches its volume to your strumming speed for the most realistic sound available. If you want to expand your sonic palette, Autoharp includes built-in chorus, delay and reverb effects. You can configure each effect and enable them in any combination. With an in-app purchase, you can save multiple effects programs and switch between your saved programs. If you have any MIDI equipment, you can also use Autoharp as a MIDI controller. Strum its strings and send note-on commands to another device to generate virtually any sound. The MIDI commands include velocity values determined by your strumming speed for expressive playing. Advanced players can even customize Autoharp's string and chord layout, to optimize the sound for a given song or test a new setup before modifying a real autoharp. With an in-app purchase, you can set the note assigned to each string (from a total of 53 available notes) and set the strings assigned to each chord bar (either 15 or 21), then switch between any of your saved layouts. Before buying this app, I recommend watching the demo video at autoharpapp.com to see how it works. If you need help after your purchase, please contact me before writing a bad review. I have no way to respond or help you if you publish your complaints in a review, but I respond promptly to all emails.

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

Screenshots

Autoharp4 screens
Voice Synth Modular4 screens

Verdict

The call

The clearest difference is price: Voice Synth Modular at Free against Autoharp's $1.99. Voice Synth Modular also leads on rating (4.2 vs 3.8) and ratings volume (3K vs 9). Autoharp's advantage is review sentiment (64% vs 41%) and iOS requirement (12.0 vs 16.6). 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

CostPrice · In-app purchases · Ads · Monetization

Voice Synth Modular is free to download; Autoharp costs $1.99 up front. Autoharp sells 2 one-off in-app purchases and Voice Synth Modular sells 2 one-off in-app purchases. 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 3.8. That said, the two scores are not equally well evidenced: Voice Synth Modular has 3K ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 64% of Autoharp's written reviews are positive against 41% of Voice Synth Modular's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Autoharp ships an update every 2 months, Voice Synth Modular monthly. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
Autoharp versus Voice Synth Modular: the parameters behind the verdict, then further details
ParameterAutoharpVoice Synth Modular
Price$1.99Free — better
Rating3.8 (9 ratings)4.2 (3K ratings) — better
Positive reviews64.3% of reviews — better41.3% of reviews
Number of ratings93K — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better16.6
Further details — not scored
Size32 MB66 MB
Age rating4+4+
DeveloperArlo LeachQneo

Customer experience

Autoharp

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews56 reviews
Positive64.3%
Neutral8.9%
Negative26.8%

Voice Synth Modular

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

Bugs and requests

Autoharp

Not enough reviews yet to summarise bugs or 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

In-app purchases

2 purchases

Autoharp

One-time2
  • Save Multiple Effects Programs$0.99
  • Set Up Custom Chord Layouts$3.99
2 purchases

Voice Synth Modular

One-time2
  • Pro ToolsFree
  • Upgrade$8.99

Questions

Is Autoharp free?
Autoharp costs $1.99, and also offers in-app purchases.
Is Voice Synth Modular free?
Voice Synth Modular is free to download, with in-app purchases available.
Which has better reviews, Autoharp or Voice Synth Modular?
Voice Synth Modular is rated higher. Autoharp averages 3.8 out of 5 from 9 ratings, while Voice Synth Modular averages 4.2 from 3K ratings.
Do Autoharp or Voice Synth Modular have ads?
Neither Autoharp nor Voice Synth Modular shows ads.
Which is updated more often, Autoharp or Voice Synth Modular?
Autoharp ships an update every 2 months, and Voice Synth Modular monthly. Most recently, Autoharp was updated on September 21, 2026 and Voice Synth Modular on September 24, 2026.

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