Budget every payday, not every month.
L3R is a family studio building a growing collection of budgeting apps you buy once, like Payday Bill Planner, Payoff Haven and Little Jars.
Want it on every device? Cloud Sync is optional.
- One-time price
- No subscription
- No bank connection
- Your data stays in your browser
Need something built for your business? Start a project

- Not per calendar month
- Per payday
- Two incomes, one plan
- Household
- No subscription
- One-time
- Not a spreadsheet
- Web app
Rent is due on the 1st. You get paid every second Friday.
Bills arrive on dates that have nothing to do with when you get paid. Rent on the 1st, phone on the 4th, car insurance on the 12th. The month balances on paper and still goes wrong in practice, and you're left wondering where the money went.
Payday Bill Planner works in pay periods instead of calendar months. Every bill is assigned to the payday that actually has to cover it, and each pay shows what's due, what you've already paid, and the figure that matters most: available this pay. A heavy fortnight is visible before you walk into it.
Try the free demo, no signup · runs in your browser, nothing to install.
Also out now: Filed Away (self-employed taxes) · Holiday Gifts Planner (holiday gift budgets) · Payoff Haven (debt payoff) · Little Jars (sinking funds). See all the apps and prices →
In our buyers' own words
The app is simple, cute, and easy to use. Definitely another useful tool for managing money!
Sarah
on Little JarsI absolutely love them!! I have never seen anything like the Paycheck planner breakdown and it is GENIUS - and has helped so much so far. I honestly don’t see how it could be any better haha! Your question about having a button that would send debt payments from the planner to the tracker would also be genius, that’d be so great! Honestly, keep up the amazing work!
Lea P.
on Payday Bill PlannerBudgeting made easy! Thanks to the brilliant mind behind this ☺️
Marigem B.
on Payday Bill PlannerI'm absolutely obsessed with both purchases from this shop. The apps are truly amazing and yet so simple and modern and has everything I could need. I LOVE the paycheck breakdown of the bills. I hope they come out with more just like this that covers savings, sinking funds, retirement type stuff. Definitely recommend!
LS Pierce
on Payday Bill PlannerBuilt for real businesses
Alongside our own apps, we build websites and tools for small businesses.
- Website

Walk-in clinic, Toronto
Marlee Medical Centre
We built and improved the clinic's website. It was our first clinic project, and it led to work for three more clinics.
- Google Sheets
Production business, United States · Upwork
Payroll calculator in Google Sheets
We built a Google Sheet that works out payroll from production numbers, with variables the client can adjust as their operation changes.
- Google Sheets
Client in Estonia · Upwork
Google Sheet redesign
We reworked a data-heavy Google Sheet so it is easier to read and use, delivered ahead of the deadline.
"Fast and efficient :)"
Client review on Upwork - DatabaseIn progress
Business in New Zealand · Upwork
Customer category database
We're building a database that sorts customers into categories each month and shows who moved up or down, so the business can win back lapsed customers and turn more into regulars.
The things people ask before they buy
Know where every paycheck is going.
Pay once, keep it for good, and try any app free before you decide.
- One-time price
- No subscription
- No bank connection
- Your data stays in your browser