Cloudflare Turnstile alternative — SignupDoggy comparison (2026)

Cloudflare Turnstile alternative for indie SaaS teams. Pricing, accuracy, integration time, and which one fits a 2-50 person team. Honest comparison of Cloudflare Turnstile and SignupDoggy.

Cloudflare Turnstile alternative

Cloudflare Turnstile is the free, frictionless CAPTCHA that replaced reCAPTCHA for most sites in 2023. It's invisible to 95% of real users and challenges only suspicious sessions.

THE CATCH: Turnstile is NOT a fraud API. It's a CAPTCHA. It challenges the browser session and nothing else. Every non-browser bot (curl, Puppeteer, Python requests, mobile app) sails right through.

THE RIGHT WAY TO USE TURNSTILE: as the FIRST stage of a 2-stage funnel, with SignupDoggy as the SECOND stage. Turnstile catches the dumb browser bots; SignupDoggy catches the headless scripts, the residential proxies, and the disposable emails.

Full integration code and the 2-stage funnel pattern: /blog/cloudflare-turnstile-vs-server-side-fraud-api.