Designed with you in mind
Small changes.
Real savings.
From electricity and household bills to savings goals and daily challenges, make everyday decisions with a little more confidence.
Uses your inputs and a 365-day year. Example 28p unit rate is not a live tariff.
The free toolkit
Useful answers, without the guesswork.
Handy calculators built for UK households. Nothing to sign up for.
Appliance running cost calculator
Find out how much a kettle, heater, television or other appliance could cost to run using your own tariff.
Open free tool →Standby electricity cost calculator
Estimate the cost of leaving multiple devices plugged in around the clock.
Open free tool →Fridge and freezer running cost
Turn the kWh/year on an appliance's energy label into an estimated annual running cost.
Open free tool →Shower water-use calculator
Estimate how much water showers use over a year, with optional metered water and wastewater costs.
Open free tool →Car commute fuel cost calculator
Work out the approximate fuel cost of your weekly commute using UK miles per gallon.
Open free tool →Free subscription audit
List the recurring payments you make and see their yearly total in seconds.
Open free tool →Savings goal timeline
See how many months it could take to reach a chosen target.
Open free tool →Emergency fund planner
Pick an amount of essential monthly outgoings and calculate your own savings target.
Open free tool →Broadband deal comparison
Compare the headline cost of staying with your broadband contract against an alternative.
Open free tool →A reason to come back
A little something for today.
A quick challenge, a useful discovery, or a practical way to keep your goals moving.
Daily brain boost
One question.
A fresh day.
Give your brain a tiny workout with our free daily question. Keep a streak on your own device.
Take today's challenge →Simple saving habit
52 weeks.
Your own pace.
See how little weekly savings could accumulate over a year, without unrealistic promises.
Explore the 52-week challenge →Read, learn, decide
Helpful guides with the workings shown.
Short, practical explanations behind the tools.
How to calculate the running cost of any electrical appliance
A plain-English guide to watts, kWh and why your real electricity rate matters.
FREE GUIDEHow to estimate the cost of standby electricity
Small continuous loads can add up over a whole year. Here's the arithmetic.
FREE GUIDEA simple way to plan an emergency fund
Choose a target you understand, and work out a realistic gap without relying on forecasts.
Our promise
Practical and private by design.
No bank account connections, paid subscriptions or AI-generated guesses about live prices. Use your own figures and see how the maths works.