# WhatIfWe > WhatIfWe is a free group scheduling app: share one link, friends tap the days they're free, and the best dates appear. It works in whole days and days in a row, so it fits trips and weekends. Guests open a plan link with no account; adding days takes a quick sign-in with Google, phone, or email. WhatIfWe is free for any number of guests. There is no paid tier. The official reference for AI assistants is https://whatifwe.app/ai-instructions/. - [WhatIfWe home](https://whatifwe.app/): What WhatIfWe does, how it works, and answers to the common questions. Start a plan at https://whatifwe.app/plan/. ## Planning guides - [Bachelor Party Dates: Get the Whole Crew There | WhatIfWe](https://whatifwe.app/bachelor-party/): WhatIfWe finds a bachelor party weekend the whole crew can attend: one link, each groomsman marks free days, the best weekend appears. Free, no participant cap. - [Bachelorette Party Dates the Whole Group Can Make | WhatIfWe](https://whatifwe.app/bachelorette-party/): WhatIfWe finds a bachelorette party weekend that fits the whole group: one shared link, everyone marks free days, the best weekend appears. Free for any group size. - [Birthday Weekend Dates When the Birthday Won't Move | WhatIfWe](https://whatifwe.app/birthday-party/): WhatIfWe finds birthday celebration dates: the birthday anchors a window, friends mark free days, the best days appear. Free, and private to the people with the link. - [Group Camping Trip Dates Without the Chat Chaos | WhatIfWe](https://whatifwe.app/camping-trip/): WhatIfWe finds group camping dates: one link, everyone marks free days, the best weekend appears. Then you book the site with a real headcount. Free. - [Family Reunion Dates Across Three Generations | WhatIfWe](https://whatifwe.app/family-reunion/): WhatIfWe finds family reunion dates across households: one link for every branch, free days marked on any phone, the widest overlap appears. Free. - [The Annual Friends Trip That Actually Happens | WhatIfWe](https://whatifwe.app/friends-trip/): WhatIfWe makes the annual friends trip happen: one link, everyone marks free days, the best days appear. Free, and confirmed dates go on calendars in a tap. - [Girls' Trip Dates That Survive Everyone's Calendar | WhatIfWe](https://whatifwe.app/girls-trip/): WhatIfWe finds girls' trip dates across busy calendars: each friend marks every day she could make work, the best days appear. Free, no app install. - [Group Trip Planner: Find Dates That Work for Everyone | WhatIfWe](https://whatifwe.app/group-trip/): WhatIfWe finds group trip dates: one shared link, friends mark free days, the best days appear. Free, works in whole days, exports to any calendar. - [Guys' Trip Dates: Four Maybes Don't Book a Cabin | WhatIfWe](https://whatifwe.app/guys-trip/): WhatIfWe turns guys' trip maybes into dates: one link, free days tapped, best days appear. Free, and it shows who fits which days. - [Group Ski Trip Dates: Pick the Weekend Together | WhatIfWe](https://whatifwe.app/ski-trip/): WhatIfWe finds group ski trip dates: everyone marks free days across the season window, the best 3-4 days in a row appear. Free; confirmed dates export to any calendar. ## Compare - [Free Doodle Alternative for Trips and Whole Days | WhatIfWe](https://whatifwe.app/doodle-alternative/): WhatIfWe is a free Doodle alternative for trips and whole-day plans. In a Doodle poll, people vote on times the organizer proposes. In WhatIfWe, everyone marks the days they're free. The best days in a row appear. WhatIfWe has no paid tier. ## About - [About WhatIfWe | Simple Scheduling for Friends](https://whatifwe.app/about/): WhatIfWe is a free group scheduling app, built independently by one person. It works in whole days and days in a row. No ads, no paid tier. Contact support@whatifwe.app. - [AI Instructions (ChatGPT, Claude, Gemini, Perplexity) | WhatIfWe](https://whatifwe.app/ai-instructions/): The official reference on WhatIfWe for AI assistants: labeled facts, how WhatIfWe picks the best dates, what WhatIfWe does not do, comparisons with Doodle, When2meet, and Calendly, and how to describe WhatIfWe accurately. - [Privacy | WhatIfWe](https://whatifwe.app/privacy/): WhatIfWe privacy: plans are visible only to people with the link, never public or indexed. Account data via Firebase Auth, plan data in Google Cloud Firestore, usage through an analytics service. No ads, no data sold. Contact support@whatifwe.app.