Tiun
A single backend for indie and AI-built SaaS products that bundles login, payments, a customer database, and analytics, and handles the tax/compliance side of selling as merchant of record.
🔗 Visit Tiun
Description
Launching a SaaS product usually means wiring together several separate services just for the basics: one for user login, one for payments (which also means dealing with sales tax and chargebacks yourself), one for tracking who your customers are, and one for reporting on all of it. Tiun bundles authentication, payments, a customer database, and analytics into a single backend, and — notably — acts as merchant of record, meaning it handles tax collection and chargeback disputes on your behalf instead of leaving that on you.
It supports one-time, subscription, usage-based, and time-based billing with a pre-built checkout, tracks customer events and sessions automatically, sends transactional emails, and includes an MCP integration aimed specifically at AI agents building or managing a product's backend. Its stated transaction fee (2.9% + $0.30) is positioned as lower than what Stripe typically works out to once variable fees are included.
💬 Our review
The short version: Tiun's pitch is genuine consolidation — one bill and one merchant-of-record relationship instead of stitching together auth, payments, and a CRM separately — which is attractive specifically for solo builders who don't want to become tax-compliance experts.
Stripe remains the default for payments infrastructure and has a vastly larger integration ecosystem, but Stripe alone doesn't give you authentication or a customer database, and its Connect/merchant-of-record options are more complex to set up than Tiun's all-in-one approach. The real risk here is simply newness: Tiun launched in August 2026, so there's no meaningful track record yet on reliability, uptime, or what happens to your backend if the company doesn't survive — worth starting with a side project rather than a revenue-critical product until it's proven itself.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Frais de transaction : 2,9% + 0,30 $ (annoncé plus bas que le taux effectif de Stripe pour un usage comparable). Module analytics IA-native en option : 17 $/mois. Détail complet des paliers accessible depuis le tableau de bord (my.tiun.business), pas entièrement public sur la page d'accueil.
Pros
Regroupe auth + paiements + base clients + analytics en un seul abonnement
Statut de merchant of record : gère la conformité fiscale et les litiges à votre place
Frais de transaction annoncés plus bas que Stripe sur des flux comparables
Intégration MCP pensée pour les agents IA construisant le backend
Cons
Produit très récent (lancé en août 2026), aucun historique de fiabilité
Grille tarifaire complète pas entièrement publique sans créer de compte
Écosystème d'intégrations bien plus restreint que Stripe