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TypeScript‑first · SceneGraph‑ready

Hosanna UI

Build beautiful, high‑performance TV apps with a declarative UI framework. Iterate on the web, ship to Roku — without learning BrightScript.

Developer‑friendly

Use your existing web devs — no Roku specialists required

Hosanna feels like React/SwiftUI. Your web and connected‑device engineers are productive on day one — shipping real Roku apps without touching BrightScript. Clean patterns, strong typing, and tooling your team already knows.

Existing developers collaborating on Hosanna UI
Performance

SceneGraph rendering with TV‑scale performance

Under the hood, Hosanna maps your declarative views to SceneGraph nodes and lifecycles. You get buttery navigation, virtualized lists and grids, and an animation system designed for 10‑foot UIs.

Performance visualization showing SceneGraph rendering
Cross‑platform

Build once. Ship to Roku today — more platforms ahead

Iterate quickly on the web, then deploy to Roku. Apple TV and Android TV targets are on our roadmap, using the same Hosanna codebase.

Cross-platform deployment targets: Roku and web
Transparent by Design

Full Framework Source Access

Hosanna projects come with full source access — no black boxes. The transpiler that ships to Roku and other targets is licensed, but every client project includes a lifetime license. We build your app, hand it over, and your team can maintain and extend it with ease.

Open source framework with clear licensing for transpiler technology
Smarter, faster, future-proof.

AI-Augmented Process

Hosanna combines our framework with AI-powered code generation and testing to accelerate development. From Figma designs to running Roku apps, AI automation removes repetitive work so your developers can focus on architecture, QA, and client success. The result: apps delivered in weeks, not months — at predictable cost, with reliable handover.

Open source framework with clear licensing for transpiler technology
Services

We build. You own. Your team maintains.

Tantawowa partners with you to design and build your TV app with Hosanna, then hands over a clean repository. Your developers continue at full speed using TypeScript — not a niche stack. We're here for support and feature work when you want it.

Tantawowa team providing services for your TV app

Ready to ship a Roku app without hiring Roku specialists?