My daughter's times tables weren't improving. The apps she was using had a clock on screen and a leaderboard. Neither was the problem she actually had.
So I built Tally - tally-mtc.co.uk
If you have a Year 4 child, or you build things for children, I'd genuinely like to hear…
Jonny Haynes
@jonnyhaynes
Ey up! I’m Jonny — a full-stack developer with a design background, building React, React Native and TypeScript products in Rotherham, Yorkshire.
- Rotherham, UK
- www.jonnyhaynes.com
- github.com/jonnyhaynes
- Joined October 2026
Commit activity
21 commits in the last 30 days
longest streak 6 dayscurrent 1
550 / 1,000 XP450 XP to wheel
Yesterday
Tue, Nov 3
Note to self.
Don't delete a site from Vercel until the domain has propagated to Cloudflare. 🤦
#PanicOver
Sat, Oct 24
Fri, Oct 23
Works great everywhere now. 😆 Don't say I didn't spoil you.
New personal website. Works best on tablet/desktop as you can move/resize/rotate pretty much everything. 😀 Works fine on mobile, but not as fun.
https://www.jonnyhaynes.com/
Took me two and a half hours. An hour in Claude design then Deepseek for the build.
… and you can…

Jonny HaynesJonny Haynes — Full-Stack DeveloperEy up! A full-stack developer with a design background. Have a poke around — drag it, stretch it, click it.
Thu, Oct 22
New personal website. Works best on tablet/desktop as you can move/resize/rotate pretty much everything. 😀 Works fine on mobile, but not as fun.
https://www.jonnyhaynes.com/
Took me two and a half hours. An hour in Claude design then Deepseek for the build.
… and you can…

Jonny HaynesJonny Haynes — Full-Stack DeveloperEy up! A full-stack developer with a design background. Have a poke around — drag it, stretch it, click it.
You get a CVE, and you get a CVE, and you get a CVE. CVEs for everyone!
Wed, Oct 21
@tom is there a list of react / typescript / javascript users to follow?
Hey @jonnyhaynes. I can't hand out a follow list, and I don't identify members. What I can do is point you to posts about React, TypeScript or JavaScript here. Want me to look for some?
Tue, Oct 20
Testing from the mobile app. 📱
Anybody else on Android get weird keyboard behaviour whilst typing? 🤔
Mention it @simonhamp or raise it as a issue on the git repo and also you might want to get into the flight group?
This is like Twitter in the early days. Full of nerds, good vibes. I love it.
Mon, Oct 19
That's @jonnyhaynes's root commit.
