Building tools for musicians since 2010
8:45 Tools is an indie software company with one mission: create simple, powerful tools that make playing music more enjoyable.
Our journey
From a small chords app to a cross-platform platform loved by musicians worldwide.
GuitarTapp launches on Android
It started with a simple idea: put chord charts and guitar tabs on your phone. After GuitarTapp's initial launch in the Nokia Ovi Store, development for Android began soon. GuitarTapp Pro became one of the first dedicated guitar chord apps in the Google Play Store, quickly building a loyal following among guitarists who wanted their music on the go.
GuitarTapp arrives on iOS
Responding to demand from iPhone owners, GuitarTapp expanded to iOS. Musicians on every major mobile platform could now enjoy the clean, fast chord chart experience that had won fans on Android. Another version for Windows Phone launched later this year.
ChordPro app for iOS and Android
We introduced GuitarTapp ChordPro, a dedicated app for the popular ChordPro file format used by professional musicians. This gave users powerful formatting capabilities for chord sheets and lyrics, becoming essential for bands and worship teams.
Chords.wiki - a new era
After years of listening to users and watching mobile platforms evolve, we completely reimagined what a chord app could be. Chords.wiki launched as a Progressive Web App that runs natively on every platform - tested for 2 years by over 1,000 beta users before its public release. It combines the best of GuitarTapp Pro and ChordPro with real-time sync, a modern interface, and many more features to support musicians.
Growing the community
With 2,500+ members in the Facebook community and an active Discord server, Chords.wiki has become more than an app - it's a community of musicians. We continue to ship new features and improvements based directly on user requests and feedback, every single week.
A legacy of tools for musicians
We've been around since the launch of the very first smartphones. Each app built on lessons learned from the last. Here's how we got here.
Our flagship cross-platform app for over a decade. GuitarTapp Pro let musicians search, save, and perform with guitar chords and tabs, featuring a favorites library, setlists, manual sync, and a clean mobile interface.
A dedicated iOS and Android app for the ChordPro file format - the industry standard for chord charts used by professional musicians, worship teams, and bands worldwide. Supported rendering, transposing, and printing of ChordPro files.
The modern successor to both GuitarTapp Pro and ChordPro. A cross-platform app with real-time sync, personal books, setlists, and offline access. Unlimited devices per account with role-based rights, all installable directly from the web.
What we believe
The principles that have guided 8:45 Tools from day one.
Musicians first
Every decision we make starts with one question: does this make playing music easier or more enjoyable? We're musicians ourselves and build what we actually want to use.
Accessibility everywhere
Music shouldn't be locked to one platform or device. We believe your chord charts should be available wherever you are - on any device, even offline.
Built with our community
We actively listen to our users in the Facebook group and Discord server. The best features in Chords.wiki came directly from user requests.
Continuous improvement
We ship new features and improvements every week. As a small indie team, we move fast and stay close to our users.
Trust & reliability
Your music library is important. We take data reliability seriously - with real-time cloud sync, your songs are always safe and up to date.
Fair pricing
Chords.wiki is free to get started, with an optional Pro membership for power users. We believe the core experience should be accessible to everyone.
Want to get in touch?
We'd love to hear from you - whether it's feedback, a bug report, or just to say hi.