Desktop app + account
Time Wheel
Sorts your computer time into your own projects and shows where your day went, by day, week, month or year. Time away from the screen only counts when you add it.
£19 onceNew
Software studio · London
Small systems
that do one job.
Plain Systems makes small tools that each do one job, starting with Time Wheel, and builds systems to order for businesses and teams. Everything it makes tells you plainly what it's doing, and keeps working on a bad day.
Sheet00 · Index
RevC
Date24.09.2026
Est.2025
Time Wheel
where your day actually went.
Your computer already knows which window was in front all day. Time Wheel sorts that into your projects (clients, content, admin) instead of app names, and draws it as a wheel. The desktop widget shows today and this week. Your account shows any day, week, month or year, from any computer.
£19 onceWindows 10 & 11Window titles never leave your computer
Example week · 22h
The tools
Buy one, or get them allEach tool says plainly what it does and what it costs. Pay once for the one you need, or join the membership waitlist to get all of them on one account.
Card pack + tracker
The 90% Brain
Five plain admin systems for freelancers with ADHD, covering clients, money, scope, resets and the bad days. A ten-page card pack and a spreadsheet.
$19 on GumroadLive
Excel spreadsheet
UK Self Assessment 2025/26 Tax Tracker
An Excel spreadsheet for UK sole traders. Includes a blank workbook, an example workbook and a quick-start PDF. £6.99.
Record-keeping tool, not tax advice and not HMRC software.
Every tool
Membership
Every Plain Systems tool on one account, including each new one as it's released. Pay monthly, or for 3, 6 or 12 months at a time.
Join the waitlistWaitlist
Services
systems built for your business.
For businesses and teamsBring an idea or a problem. Plain Systems will tell you straight whether software can fix it, and what it would cost.
Free
Can it be built?
Send your idea in a few lines. You get a straight answer (yes, no, or yes with changes) and a rough price to build it.
£300 fixed
Systems audit
A short intake form or one call of up to 60 minutes, then a written plan within five working days: the changes that would save you the most time, in order.
Quoted per job
Custom builds
Tools, dashboards and automations built for your business, at a fixed price agreed in writing before work starts.
Membership
every tool, one account.
Buy a tool once, or become a member and get every Plain Systems tool on one account, paid monthly or for 3, 6 or 12 months at a time. Membership isn't open yet, but the waitlist is. Leave your email and we'll tell you when it opens. See what's in it.