Build real apps on top of your data

Collaborative mind mapping, idea generation, and project planning - the same tree-structured nodes render as a Mindmap, a Kanban board, a Gantt chart, or a spreadsheet, with task fields (assignee, start/end dates, priority, status, effort, and cost), tags, and integrated full-text search. The spreadsheet brings around 280 Excel-compatible functions and charts and can write your edits back to the nodes, and time travel opens the plan as it stood on an earlier date. Built on MindooDB's end-to-end encrypted sync.

A shared field map for teams on smartphones, tablets and desktop. Workbooks collect pins with photos, areas, measurements and sketches drawn with pen, touch or mouse, each encrypted with a shared key or readable only by selected users. Use it as a tree inventory with inspections and measures after the FLL guideline, for inspections such as playground or fire hydrant checks, in crisis areas around the world where peer-to-peer sync keeps relief work in step even without a server, or playfully for scavenger hunts with mini games. Because MindooDB stores every change append-only, time travel compares a workbook at two points in time, side by side or with a slider. Maps and workbooks work offline, and sync keeps every device up to date.

Collaborative editor for markdown and Word documents. Several people on several devices can edit the same file at once - including .docx, through a collaborative web editor for Word's own format, so no Word licence is needed. Saves merge cleanly via MindooDB's Automerge text CRDT under the hood, and it ships attachment-backed images and a Milkdown WYSIWYG editor.

Collaborative spreadsheet. Around 280 Excel-compatible formula functions, Column, Bar, Line, and Pie charts, XLSX file and clipboard round-trip, and spreadsheet templates - all on a stable-ID document model so concurrent row, column, and cell edits across laptops and phones merge cleanly. The headline feature is Virtual View Sheets: drop any Haven Virtual View, including views that combine private, work, and partner-tenant data, into a worksheet as ordinary cells you can write formulas and draw charts over.

Presentations your team edits together: PowerPoint-compatible slides with charts, tables and animations, merged even offline – with .pptx import and export.

The address book for companies and the people who work there – for yourself or shared with your team: all contact details, birthdays and social profiles, vCard import and export, revisions, encrypted in MindooDB.

A collaborative sketchbook and infinite canvas for teams: sketch freely, annotate imported PDFs or GoodNotes notebooks, present with a laser pointer, and compare any two page revisions side by side or with a reveal slider. Sticky notes, paper styles, pressure-sensitive pens, and tiled canvas printing for wall-sized posters — with every stroke merging live across devices so nobody overwrites anyone else's work. Works fully offline in the field, then syncs when you reconnect.

A digital workspace that brings a teacher's whole day together in one place: timetable and calendar without duplicate data entry, lesson planning and documentation, materials with OCR search, class registers with seating plans, a flexible grade book, tasks, and hand-written notes - encrypted, offline-capable, and conflict-free across devices.

A Covey-style four-quadrant task board for personal and team todos: organise by importance and urgency, work through quadrants in priority order, and drag tasks across desktop, tablet, and phone layouts. Light and dark themes match Haven, with local-first editing and real-time sync so everyone stays on the same list without overwriting each other.

iOS-Weather-style forecast tile for one or more locations. A swipeable glass card over a full-bleed photographic background adapts to the tile size Haven reports - narrow tiles show a single location with dots, wider tiles show 2-4 at once. Uses the keyless Open-Meteo APIs so no secrets ever leave the sandbox. Great reference for launch parameters, viewport events, and responsive embedding.

Reference app that demonstrates the SDK surface - launch context, documents, attachments, views. Fork it as the starting point for your own app.

Describe the app your team is missing - an AI agent writes it, publishes it to the web, and Haven installs it. Creates the GitHub repository, the Cloudflare hosting, and the deployment pipeline for you. See how it works.