Free tools

Free marketing tools, no signup.

Calculators and simulators for experimentation, paid ads, and tracking. Open-sourced math, no email gate, no upsell wall — built by the team behind TrafficLoopback.

Experimentation

Decide what's a real winner, not a fluke.

Bandit vs A/B Test Simulator

Watch a multi-armed bandit beat a 50/50 split — live.

A/B Test Significance Calculator

Is your A/B test result real, or just noise?

A/B Test Sample Size Calculator

How many visitors do you need before you can call a winner?

Paid ads

Know your numbers before you spend a dollar.

PPC Break-Even Calculator

What CPC can you actually afford to pay?

CAC, LTV & Payback Calculator

Is your unit economics actually working?

Ad Benchmarks by Industry

Compare your CTR, CPC, and conversion rate against your industry.

Tracking

Tag campaigns so attribution actually works.

UTM Link Builder

Build, validate, and save tagged campaign URLs.

Want a bandit to run the math for you?

TrafficLoopback runs Thompson-sampling bandits on your owned traffic, so you find winning ad creatives without manual significance tests. Free during beta.

Start free in beta