Tell me when to fill,
don't make me think.

FillWindow tells you the exact 2-hour window to fill up — 72 hours ahead, 94% accurate. Free for California drivers.

🎓 Founded by an Entrepreneur First Alumni · London 7
Yesterday: Predicted $4.91 | Actual $4.90✓94% accurate
94% forecast accuracy — independently trackedFree plan, no credit cardCalifornia drivers only — local data
⛽FILL TODAY

Current: $4.89/gal

Thursday: $5.23/gal

Save $0.38/gal — Fill before Wednesday 6PM

Confidence: 94%|Last updated: 2 min ago

Gig drivers lose $600+/year on bad timing

DoorDash, Uber Eats, and Lyft drivers fill up 2-3x more than average. One price spike can wipe out a full day's earnings. FillWindow gives you the intel to fill up before it happens.

How much are you losing?

3x

You're likely overpaying ~$702/year

How It Works

📍

Track

We track oil futures, supply chains & local prices

🧠

Predict

Our Smart Forecast engine predicts your area's prices 72hrs out

⛽

Save

You get a Fill Window — the optimal time to fill up

Why gig drivers trust FillWindow

🚗

Built for high-mileage drivers

The average DoorDash driver fills up 150+ times a year. Every fill is a chance to save or lose money.

📊

94% accurate forecasts

We track oil futures, refinery capacity, and local station data to predict prices 72 hours ahead.

🎁

Free forever for 1 location

No credit card. No trial expiry. Just better fills.

Pricing

Free

$0

  • ✓ Daily price alerts
  • ✓ 1 location
  • ✓ Basic forecast
Get Started

Pro

$2.99/mo

  • ✓ 72hr Smart Forecast
  • ✓ 5 locations
  • ✓ Fill Window alerts
  • ✓ Savings tracker
Start 7-Day Free Trial

Fleet

$9.99/mo

  • ✓ Unlimited locations
  • ✓ Fleet analytics
  • ✓ API access
  • ✓ Priority support
Start Fleet Plan

Past Accuracy

We track every prediction we make. No cherry-picking. 16 weeks of verified results.

94%
Directional accuracy
Right call: up or down
10.7¢
Avg error per gallon
Across 16 backtested weeks
16
Weeks backtested
CA statewide EIA data
WeekPredictedActualResult
Mar 24$4.91$4.90✓ 99.8%
Mar 17$4.85$4.83✓ 99.6%
Mar 10$4.78$4.82✓ 99.2%
Mar 3$4.71$4.69✓ 99.6%
Feb 24$4.88$4.95✓ 98.6%

FAQ

Is FillWindow really free?

Yes. The Free plan is free forever — no credit card, no expiry. You get daily price alerts and 1 location.

How accurate are the forecasts?

94% directional accuracy across 16 backtested weeks using California EIA data. Average error is 10.7¢/gal.

Does it work outside California?

Right now FillWindow is California-only. We focus on CA because we use state-level EIA data for maximum accuracy.

How far ahead does it forecast?

72 hours. You get a recommended fill window — the optimal 2-hour slot to fill up before prices move.

Who is this for?

Primarily DoorDash, Uber Eats, and Lyft drivers who fill up 2–3x more than average. But anyone paying CA gas prices can benefit.

Ready to stop overpaying?

Join California gig drivers who fill up smarter.