Which is cheaper, Kinde or Stack Auth?

Kinde is 2.0x cheaper than Stack Auth. Kinde starts at $0/mo, Stack Auth starts at $0/mo.

Does Kinde have a free tier?

Yes, Kinde offers a free tier with mau: 10500, roles: 2, permissions: 10, featureFlags: 10.

Kinde has significant switching cost. Stack Auth has drop-in switching cost. Stack Auth is easier to switch away from.

Auth

Kinde

← More affordable

Authentication and user management for modern apps with built-in feature flags

Switching Cost: significant

Stack Auth

Open-source Auth0/Clerk alternative with managed hosting or free self-hosting, built for Next.js

Switching Cost: drop-in

Budget-wise, Kinde is clearly more affordable at roughly a 2.0x price difference.

Their pricing models diverge: Kinde uses hybrid, while Stack Auth operates on a per-seat basis.

If budget is your primary constraint, Kinde is the clear winner with its more wallet-friendly pricing structure.

If budget is your primary constraint, Kinde is the clear winner with its more wallet-friendly pricing structure.

Price Difference

2.0x

Kinde is cheaper by $24/mo

Pricing Model

Different

Tools charge using different pricing philosophies

Switching Costs

Stack Auth

Lower switching costs for easier migration