Four ways to learn by doing
Every topic gets the format that makes it click. Tap a tile to try it.
Simulators
Run the scenario before it happens. Watch a blackout drain a home battery, or see what a heat pump does to your bill.
Try the blackout drillCalculators
Get your own numbers, with charts that move as you do.
Race a balance to zeroGames
Learn the rules by playing. Sort expenses, beat the clock, keep your streak.
Play a roundGuides
Plain-English explainers that sit right next to the tools, with no jargon.
Find the guidesPick one and play
A small taste of what we build. Each one is a working demo, and each has a full version waiting on our sites.
How long can your house hold out?
Flip things on, then start the outage. Battery: 13.5 kWh.
Simplified demo. The full simulators live on EnergyLabPro.
Race your balance to zero
Move the sliders. See what an extra $50 a month does.
Simplified demo. More credit tools on ClearCreditGuide.
Needs, wants or savings?
A taste of our games. Play the full versions on ClearCreditGuide.
Press start to race. Time speeds up as the race goes.
How fast does your car charge?
Charging from 20% to 80% on three kinds of charger.
Simplified demo, 90% efficient. Learn more on EVHomeEnergyGuide.
Where it all lives
Every tool has a home, and the family keeps growing. Pick a place to start.
EnergyLabPro
Simulators and calculators for everything in your home. Run a blackout, size a battery, test a heat pump.
- Appliance load
- Heat pump vs furnace
- Portable power stations
EVHomeEnergyGuide
Electric cars, home charging and energy savings, explained so you can decide with confidence.
- EV towing range
- Home backup
- Charging cost
ClearCreditGuide
Credit and debt, made hands-on. Race a balance to zero and play games that teach the rules.
- Debt snowball vs avalanche
- Minimum payment trap
- Social Security
The next one
New worlds are on the way. Got something you wish you could simulate or play with?
Tell us your ideaBuilt to be easy
No learning curve. Open a tool and start.
Free to use
Every tool is open to everyone, with nothing to unlock.
No sign-up
No account and no email wall. Open it and go.
Instant answers
Results update the moment you move a slider.
Made for phones
Big controls, clear numbers, and nothing to pinch or zoom.
We make hard things feel like play.
Big decisions about money, energy and your home are usually buried in spreadsheets and sales pitches. We rebuild them as things you can touch: sliders to drag, outages to survive, games to win. When you can see what happens, you understand it, and you choose better.
Vintage Allday is an independent studio that builds free educational tools for home energy, electric cars and personal credit. We keep adding new ones. If it can be calculated, simulated or played, it's on our list.
Got an idea for the next tool?
Tell us what you wish you could simulate, calculate or play with. Partnerships and press are welcome too.