Rheo vs Storyflow

Rheo is a mobile platform for designing and changing app flows, then comparing variants without waiting for App Store reviews. Its canvas supports onboarding, paywall, win-back, and upsell journeys with branches and targeting. Teams can test holdouts and variants in flow structure, copy, and timing, and review conversion and revenue. Rheo says its inputs, layouts, animations, and system moments render natively on iOS and Android, not in a WebView. React Native is supported; Swift, Flutter, and Kotlin are marked as coming soon. After SDK integration, teams publish flows for the app to pick up. The dashboard includes flow completion measures and funnel and cohort views. Rheo Engage handles broadcasts and automations through a customer's SES, Resend, Postmark, or SendGrid account. Integrations named include RevenueCat, AppsFlyer, Adjust, and Superwall. Pricing includes a free plan and paid plans from $49.99/mo. The free plan includes 400 MAU and no experiments; exceeding an included MAU quota pauses the SDK until the next month or an upgrade.

Storyflow is a browser-based, low-fidelity wireframing tool for planning sitemaps, user flows and layout blocks on an infinite canvas. Users can describe a site or app and have AI arrange pages, screen flows and rough layout blocks. Screenshots, PDFs, reference links and video stills from YouTube or Vimeo can be added as references. AI can use the active board plus up to three Tactics, five documents and three boards as context. Storyflow includes templates, real-time collaboration, view-only sharing and exports in PNG, SVG or PDF. Approved structures can be taken into Figma. It is intentionally limited to ideation and low-fidelity wireframes: there are no component or UI libraries and no clickable prototypes. The browser product requires no installation. Storyflow says projects are private by default, data is encrypted in transit and at rest, and customer content is not used to train AI models. Plans include Free at free, Plus at $9.99 a month, Pro at $19 a month and Max at $49 a month.