←back to thread

Show HN: Cadence – A guitar theory app

(cadenceguitar.com)
184 points apizon | 2 comments | 13 Oct 25 10:18 UTC | HN request time: 0.478s | source

Hello HN, I just released this music theory and ear training mobile app for guitar which I've been working on for a bit more than a year on the side.

The idea was to make something for the eternally "intermediate" guitarist (myself included). There are a lot of beginner apps which rely on learning songs, toolkits which give you a bunch of stuff with no explanation but not many in-between apps to actually learn and practice more generic and somewhat advanced stuff.

The app contains short lessons, recaps and most importantly challenges (visual, audio and pure theory) along with a very complete library.

The challenges are made for practicing, they will get increasingly harder and getting to the max score is supposed to be quite hard. The idea being that you have to repeat them regularly until your brain has integrated the info and it flows naturally rather than being a one time quick dopamine shot. This is partly inspired by how language learning apps work.

It has no ads, a lifetime purchase option and you can use it without an account if you don't care about multi-device sync or backing up your progress.

Android: https://play.google.com/store/apps/details?id=com.apizon.cad...

iOS: https://apps.apple.com/us/app/cadence-guitar-theory/id674701...

(This is my second and last post about this sorry for spam. My first post a few weeks ago didn't get any views and posting on a saturday might not have helped...)

Show context
deckar01 ◴[22 Oct 25 19:52 UTC] No.45674272[source]▶
If I quickly play two different notes there is a pop/crack noise. It doesn’t do this during any of the automatic sequences (likely, because it waits for the sample to stop before playing the next). (iOS)

When I went back to see if I could reproduce this outside of the Audio Challenge recap, the audio was broken. All sounds were choppy and delayed. Restarting the app the first time didn’t fix it, but switching back to the classical guitar and restarting did. I can’t seem to reproduce it now (other than the manual pop/crack).

replies(1): >>45674863 #
1. apizon ◴[22 Oct 25 20:39 UTC] No.45674863[source]▶
Thank you for the feedback

There is supposed to be a short transition window when playing a new sound to prevent the popping issue. Is it on the "Note names" lesson recap? Also if you don't mind sharing your version of iPhone/iPad, I'm concerned some older devices might have performance issues since the audio is synthesized in real time, maybe increasing the window could help.

As for the audio being completely broken and needing an app restart it actually happened to me a couple times during development but I was never able to understand how or why it occured and haven't seen it again since months so no fix in sight...

replies(1): >>45675047 #
2. deckar01 ◴[22 Oct 25 20:56 UTC] No.45675047[source]▶
iPhone 17 Pro Max (iOS 26.0.1)

I have reproduced the pops everywhere I am able to manually trigger notes.

I was fiddling with the guitar tones, then opened from the background when the audio broke. I tried repeating that, but no repro.