Comparison

AudioStretch Lite vs Boimero

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

Head to head
About

AudioStretch Lite

This app allows musicians to slow down, loop, and transpose music from audio or video files. It also enables capturing video directly with your phone's camera for transcription. Ideal for learning songs by ear or experimenting with sound.

Highlights
  • Slow down audio/video without pitch change
  • Loop difficult sections
  • Transpose music notes
  • Import audio/video files
  • Capture video with phone camera
  • Live waveform scrubbing
Features
Read full description

As a musician one of the most helpful tools you can have is the ability to slow-down, loop or auto-transpose the notes for a piece of music you are trying to learn. AudioStretch is the world’s first audio and video transcription tool. Now you can manipulate the pitch, speed and transcribe your tunes from both audio and video files; or by using your phone’s camera you can capture video directly into AudioStretch and transcribe it! FEATURES INCLUDE: Import audio or video files Capture video with your phone camera for transcription Change the speed of files without changing the pitch Listen to the individual notes as you drag the waveform Play audio and video at zero speed Transpose any music Loop difficult to learn sections With AudioStretch you get all of this in an incredibly responsive and easy-to-use app. Ideal for transcription, learning songs by ear, crazy sonic experimentation, or just listening to your music library in a new way. Note: This is the LITE edition of AudioStretch, which has a few feature limitations. To get all the features, without the limitations, consider buying the Full version. LIMITATIONS OF LITE VERSION: • Max song duration 3 minutes (full version 3 hours) • Speed range from -1.5x to 1.5x (full version -10x to +10x) • Pitch shift +/- 3 semitones (full version +/- 36 semitones) DETAILED FEATURES: • Load songs from your Music Library • Document Picker import/export option supports iCloud, OneDrive, and more • Open Dropbox files and email attachments via "Open In" • LiveScrub™ : listen as you drag/hold the waveform • Instant freeze to zero speed by double-tapping on speed display • Keyboard/spectrum feature for transcription • Super-fine speed/pitch adjustment via drag left-right on speed/pitch display • Flexible looping feature • No ads or in-app purchases If you run into any problems with AudioStretch or AudioStretch Lite, please contact support@audiostretch.com

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 voicebanks and file formats for a comprehensive songwriting experience.

Highlights
  • Intuitive piano roll for melody creation
  • Lyric input for individual notes
  • Multi-track song building
  • Import UTAU, MIDI, UST, and MusicXML files
  • 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

AudioStretch Lite4 screens
Boimero2 screens

Verdict

The call

The clearest difference is rating: Boimero at 4.6 against AudioStretch Lite's 4.0. Boimero also leads on update cadence (every 2 days vs every 3 months) and review sentiment (88% vs 73%). AudioStretch Lite's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, ratings volume 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. Boimero sells 4 in-app purchases, starting at $0.99 per month. AudioStretch Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Boimero holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 623 and 581 respectively. Written reviews point the same way: 73% of AudioStretch Lite's written reviews are positive against 88% of Boimero's.

UpkeepUpdate frequency

AudioStretch Lite ships an update every 3 months, Boimero every 2 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard7 real differences · 3 level
AudioStretch Lite versus Boimero: the parameters behind the verdict, then further details
ParameterAudioStretch LiteBoimero
PriceFreeFree
Rating4.0 (623 ratings)4.6 (581 ratings) — better
Positive reviews72.9% of reviews88.4% of reviews — better
Number of ratings623 — better581
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size18 MB400 MB
Age rating4+4+
DeveloperCognosonic Pte LtdWaffle, LCC

Customer experience

AudioStretch Lite

All ratings617 ratings
Positive75.0%
Neutral6.5%
Negative18.5%
Written reviews255 reviews
Positive72.9%
Neutral7.5%
Negative19.6%

Boimero

All ratings581 ratings
Positive91.6%
Neutral4.6%
Negative3.8%
Written reviews707 reviews
Positive88.4%
Neutral8.2%
Negative3.4%

User reviews

AudioStretch Lite

From 623 App Store ratings

What we love

  • 🚀 Great for making memes and YTPs
  • 👍 User-friendly interface
  • 🎨 Useful for music production and learning
  • 🎉 Funny and entertaining to use

Room to improve

  • 🐛 Audio/video issues (crashes, no sound, etc.)
  • 💰 Paid features should be free
  • 🔍 Difficulty importing files or accessing library

Boimero

From 581 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

AudioStretch Lite

Reported bugs

3 issues
  • Audio stops working after a while
  • Video disappears when trying to screen record
  • Crashes when trying to export or share content

Requested features

3 requests
  • Add more editing tools and effects
  • Improve loop management and save options
  • Implement night mode and other visual customizations

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

None

AudioStretch Lite

No in-app purchases

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 AudioStretch Lite free?
AudioStretch Lite is free to download, with no in-app purchases.
Is Boimero free?
Boimero is free to download, with in-app purchases available.
Which has better reviews, AudioStretch Lite or Boimero?
Boimero is rated higher. AudioStretch Lite averages 4.0 out of 5 from 623 ratings, while Boimero averages 4.6 from 581 ratings.
Do AudioStretch Lite or Boimero have ads?
Boimero shows ads; AudioStretch Lite does not.
Which is updated more often, AudioStretch Lite or Boimero?
AudioStretch Lite ships an update every 3 months, and Boimero every 2 days. Most recently, AudioStretch Lite was updated on November 6, 2026 and Boimero on November 5, 2026.

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