tiun.
Authentication, billing, and payments for AI products
Product history
- 2023 Predecessor product: time-based payments for media
The founder said subscriptions forced people who wanted only a single article to pay for a whole publication, leaving many visitors unwilling to pay. Tiun chose pay-by-reading-time to bridge readers and publishers. Founded in 2023, it piloted the model with 30 magazines; no exact availability day was found.
Swiss Startup Association / Sandro Zweig ↗ - 2024-12 Announces $2.5M pre-seed funding
Founderful led the round with Blue Wire Capital participating. The announcement still positioned tiun around media consumption and payments.
tiun / Sandro Zweig ↗ - 2026-05-22 Pivots to a commercial backend for SaaS and AI products
The team shifted its focus from media publishers to SaaS and AI builders, combining sign-in, payments, customer records, and analytics into a “commercial backend.” A free trial existed by May 22, 2026, not necessarily for the first time; public sources do not establish whether the earlier media-payments product was retired or folded into this one.
tiun / Sandro Zweig ↗ - 2026 Positions itself as an AI-native SaaS backend
Tiun combines authentication, payments, billing, customer data, and analysis to reduce the work of maintaining separate integrations. Its target is the customer-and-revenue infrastructure behind an AI-built app, not just a checkout button.
tiun.io ↗ - 2026-09-15 Launches on Product Hunt
The September launch ranked first for the day and week and second for the month, with more than 600 upvotes. It pitched one-command access to auth, payments, billing, and customer data for AI builders.
producthunt.com ↗ - 2026 Adds merchant-of-record services
Tiun says it processes payments as merchant of record, handles relevant indirect tax, invoicing, and chargebacks, then pays out monthly. This can reduce the seller’s cross-border tax administration, though a business still has its own income-tax and other obligations.
tiun.io ↗ - 2026-10 Expands agent integration and revenue analysis
The site describes agent Skills and MCP integration alongside accounts, billing plans, payments, and business analysis. Its argument is that developers need less infrastructure work between building software and earning revenue.
tiun.io ↗