AlterAuth vs Memberstack

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

AlterAuth

See full pricing history

USD · US · source: www.alterauth.rest

Plan	Pricing	Charged by	Offer type
Hobby	Free $0 for up to 1K MAU	Usage · up to 1,000 MAU	Standalone · Free
Startup Highlighted	USD 49 monthly $49/month for 25K MAU	Usage · per month with 25,000 MAU	Standalone · Fixed
Scale	USD 199 monthly $199/month for 250K MAU	Usage · per month with 250,000 MAU	Standalone · Fixed
Enterprise	Contact sales Custom volume pricing	Usage · custom volume pricing	Standalone · Contact sales

Memberstack

See full pricing history

USD · US · source: www.memberstack.com

Plan	Pricing	Charged by	Offer type
Basic Highlighted	USD 29 monthly · USD 25 / month with annual commitment · 4% of each transaction $29/mo ($25/mo billed yearly) 4% transaction fee + standard Stripe processing fees. Up to 1,000 members.	Flat · /mo	Standalone · Fixed
Professional	USD 49 monthly · USD 39 / month with annual commitment · 2% of each transaction $49/mo ($39/mo yearly) 2% transaction fee + standard Stripe processing fees. Up to 5,000 members.	Flat · /mo	Standalone · Fixed
Business	USD 99 monthly · USD 79 / month with annual commitment · 0.9% of each transaction $99/mo ($79/mo yearly) 0.9% transaction fee + standard Stripe processing fees. 10,000+ members.	Flat · /mo	Standalone · Fixed
Established	USD 499 monthly · USD 399 / month with annual commitment · 0% of each transaction $499/mo ($399/mo yearly) ZERO transaction fees + standard Stripe processing fees. 10,000+ members.	Flat · /mo	Standalone · Fixed

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

AlterAuth

Hobby

Plan card 1,000 monthly active users: Included
Plan card Behavioral biometrics: Included
Plan card Stateless JWT tokens: Included
Plan card 1 environment: Included

Startup

Plan card 25,000 monthly active users: Included
Plan card Anti-deepfake MFA: Included
Plan card Intent-bound agent tokens: Included
Plan card 30-day audit logs: Included

Scale

Plan card 250,000 monthly active users: Included
Plan card Agent auditing: Included
Plan card One-year audit logs: Included
Plan card Unlimited environments: Included

Enterprise

Plan card SSO and SAML: Included
Plan card SCIM: Included
Plan card SOC 2 support: Included
Plan card Dedicated SLA: Included

Memberstack

Basic

Highlights Members: 1,000

Limited
Highlights Social Logins: Included
Highlights Stripe Payments: Included
Highlights Custom SSO: Included
Highlights Branded Emails: Included
Highlights Email Campaigns: Included
Highlights Everything Else: Included

Professional

Highlights Members: 5,000

Limited
Highlights Social Logins: Included
Highlights Stripe Payments: Included
Highlights Custom SSO: Included
Highlights Branded Emails: Included
Highlights Email Campaigns: Included
Highlights Everything Else: Included

Business

Highlights Members: 10,000+

Included
Highlights Social Logins: Included
Highlights Stripe Payments: Included
Highlights Custom SSO: Included
Highlights Branded Emails: Included
Highlights Email Campaigns: Included
Highlights Everything Else: Included

Established

Highlights Members: 10,000+

Included
Highlights Social Logins: Included
Highlights Stripe Payments: Included
Highlights Custom SSO: Included
Highlights Branded Emails: Included
Highlights Email Campaigns: Included
Highlights Everything Else: Included

How their prices changed

Each date shows when a public price was observed, not when it took effect. An archived region or currency can differ, so a currency change is not necessarily a price increase.

AlterAuth

August 27, 2026
Official pricing page
- Hobby: Free
- Startup: USD 49 monthly
- Scale: USD 199 monthly
- Enterprise: Contact sales

Memberstack

September 21, 2026
Official pricing page
- Basic: USD 29 monthly · USD 25 / month with annual commitment · 4% of each transaction
- Professional: USD 49 monthly · USD 39 / month with annual commitment · 2% of each transaction
- Business: USD 99 monthly · USD 79 / month with annual commitment · 0.9% of each transaction
- Established: USD 499 monthly · USD 399 / month with annual commitment · 0% of each transaction
August 31, 2026
Official pricing page
- Basic: USD 29 monthly · USD 25 / month with annual commitment
- Professional: USD 49 monthly · USD 39 / month with annual commitment
- Business: USD 99 monthly · USD 79 / month with annual commitment
- Established: USD 499 monthly · USD 399 / month with annual commitment
August 27, 2026
Official pricing page
- Basic: USD 29 monthly · USD 25 / month with annual commitment
- Professional: USD 49 monthly · USD 39 / month with annual commitment
- Business: USD 99 monthly · USD 79 / month with annual commitment
- Established: USD 499 monthly · USD 399 / month with annual commitment
August 27, 2026
Official pricing page
- Free forever plan — free: Free
- Basic — Basic: USD 29 monthly · USD 25 / month with annual commitment
- Professional — Professional: USD 49 monthly · USD 39 / month with annual commitment
- Business — Business: USD 99 monthly · USD 79 / month with annual commitment
- Established — Established: USD 499 monthly · USD 399 / month with annual commitment