No hardware. No installations. No monthly fees. Just open pos.fillfrog.com on any device and start selling โ convenience stores, gas stations, and liquor stores love it.
Every feature in FillFrog POS was designed around real convenience store, gas station, and liquor store workflows.
Every screen, built for speed and clarity โ whether you're ringing up a lighter or closing out the day.






FillFrog POS is completely free to use. There are no monthly fees, no seat charges, and no hidden costs. You keep your money.
Credit card processing fees are covered by your customers, not you. In your product settings, you can set a processing fee โ a small surcharge added at checkout โ so the cost of accepting cards is passed to the buyer. Your margin stays intact.
We've partnered with PaidYET to handle all credit card processing for FillFrog POS. PaidYET is a secure, merchant-grade payment platform that gets you up and running fast. Follow these three steps to activate card payments:
Settings โ Developer tab. Create a new API Key โ this is what connects your PaidYET account to FillFrog POS.
Settings โ PaidYET Gateway. Enter your PaidYET Paypage subdomain and paste your API Key into the field shown below, then click Save Settings. You're ready to process card payments. Optionally, enter your terminal's Device Key (serial number) to enable "Send to Terminal" for physical card readers.
The PaidYET Gateway settings screen in FillFrog POS
Enter your email, get a one-time code, and you're selling in minutes. No credit card required โ FillFrog POS is free to use.