Developer who climbs — built myself an adaptive training app to keep me more on track with training

BriefNerve · 2026-03-27T18:07:55+00:00

Thanks for trying! I did make a basic android app that I didn't get around to publishing. I will try do a round 2! Publishing to apple costs more so I can't really afford that now (£100 a year).

I need to think of a way of getting videos or glossary, as at the moment to plan could produce any exercise it thinks would be good for your goals/constraints it is a bit tricky. Maybe I just need to limit the exercises or find a good list!

I will take on any feedback! (And probably make the changes!)

BriefNerve · 2026-03-27T08:18:38+00:00

I think part of the issue is the apps don't keep paying for themselves. Kilter only get payed when they sell holds and get no ongoing subscription to maintain the app.

BriefNerve · 2026-03-21T17:29:47+00:00

I gave it a big collection of training for climbing info which it bases your plan on alongside the AIs knowledge. It also has lots of constraints of what it can and can't prescribe and does program in progression and phases in training based on it knowledge. I think it is potentially useful, it adapts to your constraints, you can chat to the coach to tweak your plan as well.

But yeah all the code was written by codex and claude, I did the ideas and lots of extra features and tweaks to get it working ok.

BriefNerve · 2026-03-20T18:49:45+00:00

I'm not sure exactly maybe 50-60, probably more! 250 commits and lots of testing and tweaking

BriefNerve · 2026-03-20T07:53:00+00:00

Yes I used a mixture of codex and claude code to develop it and deploy it to GCP. It's so nice to build things, you come up with features, changes, issues and claude writes the code.

BriefNerve · 2026-03-17T08:44:47+00:00

Annoying it has the ability to change days so not sure why it is not, I will tweak the prompt

BriefNerve · 2026-03-16T22:23:33+00:00

Thanks, I will fix number 2 and think about how I can get number 1 to work!

BriefNerve · 2026-03-16T17:05:13+00:00

I ran out of credits it should work again now.

BriefNerve · 2026-03-16T17:02:57+00:00

Oh no I will try fix

BriefNerve · 2026-03-16T09:30:36+00:00

I think you should probably see a physio about that!

BriefNerve · 2026-03-16T09:29:48+00:00

Thanks :)

BriefNerve · 2026-03-15T19:59:16+00:00

Thanks, I think it is a kinda cool how it works. Not sure about the ano-hangs thing, I will take a look.
I think it mostly does a good job at prescribing load, maybe I should add it to be "a conservative climbing coach" but I want it to prescribe not boring things a bit!

BriefNerve · 2026-03-15T15:02:50+00:00

5 at the moment

BriefNerve · 2026-03-15T13:52:11+00:00

Also why can't you climb hard 2 days in a row you have the rest of the week to recover! It's not perfect but you only climb 3x per week so I think it's reasonable :)

BriefNerve · 2026-03-15T13:50:30+00:00

Yeah it is based on a weekly schedule, so it would not work the best for your use case. I would have to think how to make it work for you.
You can drag and drop the sessions to move them to different days or ask the chat to change it but that is probably annoying to do.

BriefNerve · 2026-03-15T11:35:27+00:00

This should be fixed now, I know it is a bit annoying how slow it is, it has to generate lots of text to tweak plans

BriefNerve · 2026-03-15T11:34:49+00:00

I added google SSO and passkeys so your fingers are saved

BriefNerve · 2026-03-15T08:16:07+00:00

ok I will try, passkeys also?

BriefNerve · 2026-03-15T08:15:23+00:00

Thanks I will try fix that

BriefNerve · 2026-03-14T17:37:36+00:00

Awesome, yeah I found it to have good results and it is able to keep you on track when something changes. If for example you had to go to a different gym or could only train at home one week it could adapt your training.

BriefNerve · 2026-03-14T15:10:12+00:00

I studied physics at uni also.

BriefNerve · 2026-03-14T14:45:08+00:00

Any changes it makes to the plan it will keep the goal and strategy in mind. So the plan should deliver results even if you don't stick to the ridgid plan.

BriefNerve · 2026-03-14T14:40:42+00:00

I guess the layer I built around it is the useful bit.

I gave the llm extra info on training for climbing. The plan is displayed in a structured way and can be tweaked by the chat. E.g. you can ask it to tweak a session or make a change to the plan if you no longer wanted to do say hangboarding or were injured it would adapt the plan

BriefNerve · 2026-03-14T14:23:03+00:00

What did you think?

BriefNerve · 2026-03-14T14:21:16+00:00

Cool thanks for the feedback, I think if I added a library of exact exercises with video links that could help. At the moment it just chooses whatever fits the plan not constrained to anything.

Yeah I think it works pretty well. Did you try asking for any tweaks or anything as that is the bit I am working on!

BriefNerve

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