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One In A Billion Applications

One In A Billion Applications creates innovative music apps to inspire users, including composition tools, songwriting software, relaxation music, global music charts, project management for music creatives, and, coming soon, vocal alignment.

MixHaven


Turn studio chaos into creative control. MixHaven is the project management tool designed specifically for music producers, songwriters, and mix engineers. It replaces messy folders and scattered notes with a professional dashboard built for the way you actually work.

Session Management

Keep every session organised from start to finish. Track who's in the room, what was recorded, and what still needs to be done.

Beat & Project Catalog

Tag, sort, and filter every beat, demo, and project in your catalog. No more digging through folders.

Version Control

Keep every mix iteration — Demo, Rough Mix, Final Master — linked to its project. Compare versions side-by-side and always know which is current.

Precision Collaboration

Leave time-coded comments on specific timestamps and annotate waveforms to visually highlight sections for clarity.

Deadline Tracking

See every project's status at a glance. Never miss a distributor submission or playlist pitch again.

Available on macOS, iPad, and iPhone.

Read More ...




MixHaven project management desktop app for music creatives
All your music projects. One clear workspace.

MixHaven operating system for modern music production
The operating system for modern music production.



Download MixHaven on the App Store




Doublewise

Coming soon

Doubles that sit exactly on the lead, without hours of slicing and nudging. Doublewise lines up doubles, harmonies and backing vocals with your lead vocal, syllable by syllable, then lets you tune and shape every note by hand.

Align Every Dub in One Pass

Import a lead and any number of dubs, press Align All, and hear the stack tighten. Timing follows the words, not the notes, so it works on harmonies as well as unison doubles, and consonants and attacks are protected.

Edit by Hand

Drag any phrase in the aligned dub, nudge it a millisecond at a time, or snap it to the lead. Compare the aligned and original takes at any moment, and undo any edit.

Shape Every Note

Match each dub's notes to the lead, pull notes to pitch, straighten drift and tame vibrato. Every note has handles for fine pitch, drift, gain, vibrato and formants, and you can split a note where its pitch changes.

Mix and Deliver

Hear the dubs against a backing track, then export them as 24-bit or 32-bit float WAV files, or drag them straight into your DAW.

Audio Unit for Logic Pro

The Mac app includes an Audio Unit plug-in. Put it on a dub track, send the lead to its side chain, play the section once, and the aligned dub plays back in place.

Coming to iPad and Mac, with one purchase for both. No account, no subscription, and all processing happens on your device.

Privacy Policy




Doublewise on Mac aligning a double and a harmony to a lead vocal in the Tracks view
Align a whole vocal stack to the lead in one pass.

Doublewise Pitch view showing a dub's notes with handles for pitch, drift, vibrato, formant and gain
Tune and shape every note by hand.


Coming soon to the App StoreiPad · Mac



Chordio

Chordio is a powerful composition and music theory tool that makes finding chords and scales fun to learn. This is an essential tool for music producers, composers, and teachers.

Learn Chord Voicings

Features built-in chord generator tools that help you find chords that sound great together.

Learn Scales & Modes

Select a chord and the app will show a selection of related chords and scales.

Catalog All Your Chord Progressions

Create chord progressions and store all these with your unique chord voicings in one place.

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Chordio app interface showing music composition workspace on iPad with chord progressions and scales
Compose, explore, and learn music theory on iPad.



Download Chordio on the App Store


Writers Session Pro


Writers Session Pro is a perfect songwriter's companion for organising your thoughts and ideas in a single place. It offers a collection of creative writing tools to help streamline and stimulate the creative process.

Features include:

A Full Text Editor with a scrollable menu bar for quick access to commonly used writing tools.

A Built-in Audio Recorder that captures and manages a list of all your recordings.

An Offline Rhyming Dictionary, Thesaurus and Dictionary.

Import backing tracks from your device media library for vocal accompaniment.

Collections of Words and Phrases for generating ideas.

A List of Musical Chord Notations and Song Sections for quick entry.

Email Export of song lyrics and audio ideas.

Various Screen Mode themes including a Dark mode for nighttime use.

Easy Printing of Lyrics sent direct to your WIFI printer.

Songs are Autosaved to prevent accidental loss of ideas.

It Stores Session Information such as royalty splits and publishing details.

Fullscreen Mode with adjustable text sizes. This is great for performing singers and studio sessions.

It allows you to Add Songwriting Credits, Splits, Publisher Details and more.

Read More ...


Writers Session Pro app interface showing idea generator and songwriting tools
Your creative writing tools, all in one place.



Download Writers Session Pro on the App Store





"Writer’s Session is a pretty darn good app."

"While many of these tools are available separately, it is really convenient to have them all tied together in a single place. For free, there’s really no reason why you shouldn’t download it and give it a go now."

Matt Vanacoro - Ask Audio Magazine

Sonosync®


Music in tune with your resting heartbeat.

We all have trouble sleeping and relaxing at certain points in our life. Whether you are stressed and need to unwind to sleep. The Sonosync app is the perfect solution and accompaniment for all these situations and more.

Tempo Control

The Sonosync app contains five different musical compositions, each recorded at three different tempos, providing over two hours of music. You choose the tempo that is most relaxing for you. Over time you may find you gradually move to the slower versions as your relaxation levels increase.

Drift Into Sleep

Use the sleep timer to automatically fade out the music and drift into a peaceful sleep.

The Photo Gallery

42 beautiful photos which automatically transition in the background.




Sonosync app running on iPhone and iPad showing relaxation music interface
Music in tune with your resting heartbeat.



Download Sonosync on the App Store




Chart Music


Enjoy listening to the top music played from over 30 countries around the world!

The Chart Music app features the best selling songs from the iTunes music store, providing a choice of 32 different countries for chart listing.

Features include:

Biography and photo gallery of the artist.

Audio preview of the song.

Get the tour dates and map view of the concert location for the selected artist.


Chart Music app interface showing global music charts from different countries
Top music charts from over 30 countries worldwide.



Download Chart Music on the App Store


Frequently Asked Questions

What apps does One In A Billion Applications make?

One In A Billion Applications makes five music apps: MixHaven (project management for music creatives, available on macOS, iPad, and iPhone), Chordio (music theory and composition tool), Writers Session Pro (songwriting companion), Sonosync (relaxation and sleep music), and Chart Music (global music charts from over 30 countries). A sixth, Doublewise (vocal alignment and tuning for iPad and Mac), is coming soon to the App Store.

What platforms are the apps available on?

All apps on the App Store today are available on iPad and iPhone. MixHaven is also available on macOS. Doublewise, coming soon, will be available on iPad and Mac.

What is Doublewise?

Doublewise, coming soon to the App Store for iPad and Mac, lines up doubles, harmonies and backing vocals with a lead vocal, syllable by syllable. You can then move any phrase by hand and tune and shape every note, including its pitch, drift, vibrato, formants and gain. The Mac app includes an Audio Unit plug-in for Logic Pro.

Are the apps free to download?

All apps are free to download from the Apple App Store. MixHaven offers a 7-day free trial followed by a subscription or one-time purchase option.

What is MixHaven?

MixHaven is a project management app designed specifically for music producers, songwriters, and mix engineers. It features session management, a beat and project catalog, version control for mix iterations, precision collaboration with time-coded comments on waveforms, and deadline tracking. It is offline by default with optional iCloud sync across all Apple devices.

What is Chordio?

Chordio is a powerful composition and music theory tool that makes finding chords and scales fun to learn. It features a chord voicing generator, scales and modes explorer, and lets you catalog all your chord progressions in one place. Essential for music producers, composers, and teachers.

What is Writers Session Pro?

Writers Session Pro is a songwriter's companion that organises thoughts and ideas in a single place. It includes a full text editor, built-in audio recorder, offline rhyming dictionary, thesaurus, dictionary, backing track import, word and phrase collections, dark mode, autosave, fullscreen mode, and songwriting credit management.

How do I contact support?

Email support@oneinabillion.net with any feedback, suggestions, or support questions.

Get in Touch

Send us an email with any feedback, suggestions or support questions.

support@oneinabillion.net

Privacy

One In A Billion Applications takes the privacy of your information very seriously. Each policy explains what we collect, if anything, and why.

Questions about your privacy? Email support@oneinabillion.net