FlowSnap

Overview

FlowSnap is a screenshot-based tool for turning app screens into sitemaps and user-flow diagrams, aimed at product managers, UX designers and indie developers. It suits people mapping an existing app from screen captures better than those starting with blank designs. Its focused canvas and export options are useful for documenting flows, though the free tier’s small project allowance and watermarked PNGs limit ongoing polished work.

Key features

An infinite canvas supports panning, pinch zoom from 10% to 200%, color-tagged cards and text annotations. Projects can batch import up to 50 screenshots from a photo library or Google Drive, which gives a substantial flow a workable starting point without adding every screen individually. Flow templates also offer a starting structure.

Solid or dashed connections, customizable colors and transition labels help distinguish routes and explain movement between screens. Exports include PNG, PDF, SVG, JSON and Markdown, covering visual sharing as well as structured output. The free plan includes core canvas features but only PNG export, with a watermark; PDF, watermark-free PNG and SVG require Pro.

Optional AI can analyze screenshots, suggest connections and generate a Markdown sitemap summary. It requires the user's own Claude API key, so AI is not a bundled service. Screenshots sent for AI analysis go to Anthropic's Claude API. Project data is saved locally and can optionally sync to a FlowSnap folder in Google Drive; FlowSnap says it does not store project data.

Pricing

Free is enough to try the canvas and map a few projects, but the three-project cap and marked PNGs constrain regular use and polished sharing. Monthly Pro removes those project and export restrictions for a modest recurring price. Lifetime Pro offers the same listed features for a one-time payment, making it the straightforward choice for someone committed to keeping FlowSnap; AI still requires a personal Claude API key.

Platforms

FlowSnap supports Android, iOS and macOS. The App Store specifies iOS 13.0 or later and macOS 10.15 or later. Google Drive imports and optional project sync are also supported.

Who it's for

Product managers, UX designers and indie developers who have app screenshots and need to organize screens into flows are the clearest fit. It is particularly useful when visual mapping and exportable documentation matter more than creating screens from scratch. Users who need more than three projects, clean PNGs or PDF and SVG exports should plan on Pro; those who want AI assistance must also be comfortable supplying a Claude API key and sending screenshots to that service.

Pros and cons

Pros

• Screenshot-oriented mapping: batch import of up to 50 images per project gives existing apps a direct route into a flow map.
• Useful flow annotations: colored cards, labeled transitions and customizable solid or dashed connectors help make routes legible.
• Multiple output formats: PNG, PDF, SVG, JSON and Markdown suit visual and structured handoffs, with clean PNG, PDF and SVG available on Pro.
• Local-first project handling: project data is saved locally, with optional Google Drive sync.

Cons

• Restrictive free tier: only three projects are allowed, and PNG exports carry a watermark.
• AI has an extra dependency: analysis requires the user's own Claude API key and sends screenshots to Anthropic's Claude API.
• Screenshot-led scope: the workflow centers on importing and connecting screenshots, so it is less suited to work that begins with new screen designs.

Alternatives

User Flow Software is the category directory for comparing tools in this space. Software Ideas Modeler is worth considering when UML and basic diagrams, broader desktop platform coverage including Linux and Windows, or free non-commercial use matter more than FlowSnap's screenshot-focused mapping.

Zeplin Flows may fit teams seeking a Linux, web or Windows option and unlimited members on its free tier; that tier is limited to one project and 100 screens and has no Flow Boards. FlowMapp is an alternative for people who want a web-accessible tool and a free plan based on one project and 20 pages, rather than FlowSnap's screenshot imports and three-project allowance.

Marvel is another option for Android, iOS and web users, with a free plan limited to one user and one project. Rheo covers Android and iOS and may suit app teams whose needs align with its free Indie plan's app, channel, seat and monthly email limits.

Figr offers web access and an extension, with a free allowance of 10 monthly-refreshing credits, three canvases and Figma export. BenchCanvas is a browser-extension and web alternative with a Pro plan described as coming soon. Cairn is a macOS-only option whose free plan is limited to one project and two scenarios and does not include file import or export.

Verdict

Choose FlowSnap if you need to turn existing app screenshots into clearly annotated sitemaps and flows, with practical export formats and local project storage. Its free plan is a useful way to map a few projects, but regular documentation work is a better fit for Pro because of the three-project cap and PNG watermark. Look elsewhere if you need a tool centered on creating screens rather than mapping screenshots, or if providing a Claude API key for AI analysis is not acceptable.