GatherGrid: Neighborhood & Community Group Event Planner

Problem and target customer

Why this exists

Customer problem

Neighborhood association leaders and club organizers coordinate gatherings across group chats, spreadsheets, and manual follow-up. Date selection is chaotic, RSVPs are unreliable, and no single record exists for who confirmed what.

Who pays

Neighborhood association presidents, hobby club coordinators, and civic group organizers who manage recurring gatherings for 20-200 members and need a structured tool instead of scattered group chats.

Business model

Monthly subscription with a free tier for single groups and a paid workspace tier for multi-group management with higher member limits.

Editorial note

GatherGrid targets a specific pain point: neighborhood association leaders and club coordinators who lose hours reconciling date availability across group chats and spreadsheets. The MVP narrows to one workflow—propose dates, collect votes, confirm, and track RSVPs—so organizers have a single record of who agreed to what.

The date poll is the core domain object. Members vote without creating an account, lowering friction for civic groups where technical comfort varies. Once the organizer confirms a date, the event transitions from polling to RSVP mode, and transactional email carries the confirmed details with a maps link to the gathering location.

The paid workspace tier unlocks multi-group management for organizers running several associations or clubs. The free tier supports a single group with member limits, giving organizers a reason to upgrade as their community grows.

Choose your next step

What do you need next?

Evaluate the operating tradeoffs quickly, or inspect how to build the MVP.

Evaluate this ideaSee the cost and deployment preview

Compare the three operating paths at the default workload before opening the full calculator.

See cost preview Build this ideaInspect the build blueprint

Review MVP scope, workflow, states, data rules, architecture, and acceptance criteria.

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Evaluation preview

What would it take to run?

Directional infrastructure estimates for the current 300 processed meetings assumption. Open the full calculator when you are ready to change it.

Open full cost and deployment

ManagedSelected

$30-$90/ month

Managed app hosting, database, backups, and basic observability for the meeting workflow.

Lowest operating effort

Lean self-hosted

$13-$53/ month

One small VPS running the app, database, media volume, and backup job.

Lowest baseline cost

More control

$50-$150/ month

Separate app, data, storage, and worker capacity for cleaner operations.

Most separation and control

Build blueprint

Build the first paid use case

Product goal

Who it serves and what it must change

Target user: Neighborhood association presidents and hobby club coordinators managing gatherings for 20-200 members
Problem: Date coordination and RSVP tracking are scattered across group chats and spreadsheets with no single reliable record
Measurable outcome: An organizer creates a group, proposes dates, collects votes, confirms a date, and receives a final RSVP headcount within one tool

MVP scope

What ships now and what waits

Included

Group creation with shareable invite link
Date poll with up to three options and anonymous member voting
Vote tally with live count display for organizer
Date confirmation transitioning event to RSVP mode
RSVP collection with attending or declining status
Transactional email for invitations and confirmations
Event detail page with maps link to location

Excluded

Recurring event automation
In-app messaging
Payment or ticketing
LLM-generated content
Calendar sync

UX and user flow

Screens, actions, and states

Organizer Dashboard

Central hub showing active groups, pending date polls, and upcoming confirmed events with RSVP counts

Create new groupView poll resultsConfirm event dateCheck RSVP headcount

Group Creation Page

Form to name a community group, add description, and generate a shareable invite link

Enter group nameWrite descriptionGenerate invite linkCopy link to share

Date Poll Voting Page

Member-facing page showing proposed dates where members vote without creating an account

View proposed datesSelect preferred dateSubmit voteSee confirmation

RSVP Confirmation Page

Member-facing page after date confirmation where members mark attending or declining

View confirmed event detailsClick attending or decliningSee maps linkReceive confirmation

Event Detail Page

Shows event location with maps link, confirmed date, current RSVP status, and attendee count for organizer

View location mapCheck RSVP countCopy event detailsSend reminder

Primary flow

Organizer creates group and copies invite link
Organizer creates event with location and proposes three dates
Members vote via invite link without account
Organizer reviews tally and confirms winning date
System emails confirmed details and opens RSVPs
Members submit attending or declining
Organizer views final headcount

Loading, empty, and error states

Draft: event created but dates not yet proposed
Polling: dates proposed and members voting
Confirmed: date selected and RSVPs open
Closed: RSVP deadline passed and headcount finalized

Core entity outline

Entities and business rules

Group

Represents a community group with members and a shareable invite link

Fields: id, name, description, invite_link, organizer_id, created_at
Relations: Has many Events, Has many Members

Event

Represents a planned gathering with location, proposed dates, and current state

Fields: id, group_id, title, location, status, confirmed_date, created_at
Relations: Belongs to Group, Has one DatePoll, Has many RSVPs

DatePoll

Holds up to three candidate dates and tracks vote counts for each option

Fields: id, event_id, option_1_date, option_2_date, option_3_date, vote_count_1, vote_count_2, vote_count_3
Relations: Belongs to Event, Has many Votes

Vote

Records a member's date preference submitted anonymously via invite link

Fields: id, date_poll_id, selected_option, voter_identifier, submitted_at
Relations: Belongs to DatePoll

RSVP

Records a member's attending or declining status after date confirmation

Fields: id, event_id, member_identifier, status, submitted_at
Relations: Belongs to Event

Business rules

A date poll must contain between one and three date options
A member can vote only once per date poll
An event cannot transition to RSVP mode until the organizer manually confirms a date
RSVP submission closes when the event date passes or the organizer closes the event
Members can vote and RSVP without creating an account using the invite link token

Architecture and data flow

Components, integrations, and controls

Web Frontend

Renders organizer dashboard, group creation, date poll voting, and RSVP pages

Postgres Database

Stores groups, events, date polls, votes, and RSVPs with member-scoped row-level security

Email Automation

Sends invitation emails when a poll is created and confirmation emails when a date is confirmed

Maps Integration

Generates a location link on the event detail page using the stored address

Integrations

Transactional email service for invitation and confirmation delivery
Maps API for generating location links from stored event addresses

Data flow

Organizer creates group in frontend, record written to Postgres
Invite link generated with token, shared by organizer externally
Member opens link, votes on date poll, vote record written to Postgres
Organizer confirms date, event status updated, Make scenario triggers confirmation email
Member submits RSVP via link, RSVP record written, organizer sees updated headcount

Failure handling

If email service is unavailable, queue notification and retry on next scenario run
If maps API fails, display raw address text without embedded map link
If duplicate vote submission detected, reject second submission and show prior choice

Security

Invite link token required for voting and RSVP submission
Row-level security on Postgres ensures members only access their group's events
Organizer role verified before allowing date confirmation or event closure

Rate limits

Vote submissions limited to one per invite token per poll
RSVP submissions limited to one per invite token per event

Deliverables and acceptance

Definition of done for the MVP

Deliverables

Deployed web app with organizer dashboard and member-facing pages
Postgres schema for groups, events, date polls, votes, and RSVPs
Make scenarios for invitation and confirmation email delivery
Shareable invite link flow for no-account member participation

Acceptance criteria

Organizer can create a group and generate a shareable invite link within 2 minutes
A member opening the invite link can vote on a date poll without creating an account
Organizer can confirm a date from poll results and the event transitions to RSVP mode
Confirmation email is sent to members within 5 minutes of date confirmation
Organizer can view final RSVP headcount with attending and declining counts before the event date

Recommended stack

Enough technology for the first version

Frontend

Lovable

Rapidly build card-based group and event pages with invite link flows and vote tally UI without custom frontend code.

Backend

Supabase

Provides relational storage for groups, events, polls, votes, and RSVPs with row-level security for member-scoped access.

Automation

Make

Glues Supabase record changes to transactional email sending when invitations are created or dates are confirmed.

Hosting

Railway

Hosts any custom backend services or scheduled jobs for vote tallying and RSVP deadline reminders.

Why this is sufficient

Lovable handles the member-facing card UI and organizer dashboard. Supabase stores the relational data model with member-scoped access control. Make bridges database events to email delivery without custom webhook code. Railway hosts supplementary services if scheduled reminders or background jobs are needed beyond MVP.

Not required for the MVP

LLM API for content generationObject storage for file uploadsIn-app real-time messagingPayment or ticketing integration

Next stepTurn the blueprint into an execution plan

Copy the build prompt, model the operating cost, and choose where to deploy.

Build and ship

Execution

Build, price, and deploy the MVP

Once the blueprint is clear, use the prompt, cost model, and deployment options to start building.

Build prompt

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Open the prompt pack whenever you are ready to take this blueprint into your builder.

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Cost calculator

Model the MVP operating cost

A technical run-cost estimate for the first production version. Team, acquisition, payment fees, and business COGS are excluded.

Estimated monthly total$30-$90

$15-$45 per 150 processed meetings

Meetings processed / month300 processed meetings

Selected pathEasiest

Pricing checkedAug 2, 2026

Cost breakdown

$30-$90 per month

Low and high values allow for usage variance and plan headroom.

Managed infrastructure

Managed app hosting, database, backups, and basic observability for the meeting workflow.

50K processed meetings included, then $8-$20 per 100K processed meetings

$25-$65

Object storage

Object storage is implied by the source workflow or feature list.

Monthly allowance from this idea's operating profile

$5-$25

Included

Application hosting
Relational database
Basic backups
gathergrid requests and outcomes state
Object storage

Not included

Paid acquisition
Founder or team time
Tax or legal review
Custom enterprise procurement

Pricing basis

The estimate combines the selected infrastructure path, required operating modules, selected optional modules, and usage above included monthly allowances. Taxes and regional uplifts are excluded.

Managed app baseline Amazon S3 pricing

Deployment options

Pick the operational tradeoff

Choose based on operating preference, not only the headline price.

EasiestRecommended

Railway

Fast Docker deployment for the app, database, worker, and preview workflow without managing a VPS.

$15-90/month before usage-heavy add-ons

Good fit

Fast setup
Low starting cost
Good preview workflow

Limitation

Usage billing needs active monitoring as traffic and jobs grow.

Open Railway

Cheapest

Vultr

Run the app, worker, and database on one small Vultr VPS with Docker Compose and explicit backups.

$8-60/month before managed add-ons

Good fit

Predictable baseline
Portable setup
Room for workers

Limitation

You own patching, backups, monitoring, and incident response.

Deploy on Vultr View the lean VPS guide

More control

DigitalOcean

Separate application, worker, data, storage, and backup responsibilities as the workload grows.

$10-120/month before managed add-ons

Good fit

Cloud VPS control
Global regions
Room for workers

Limitation

You own server setup, patching, backups, and operational monitoring.

Explore DigitalOcean View the separated cloud guide

Start building

Prototype, automate, then deploy

Recommended route

01Vibe-coding builderBuild Group and Event Interface

Create the organizer dashboard, group creation form, date poll voting page, RSVP confirmation page, and event detail page with maps link using Lovable's card-based layout.

Open Lovable 02AutomationConnect Email Notifications

Set up Make scenarios that trigger transactional emails when a group invite is generated, a date is confirmed, or an RSVP deadline approaches, using Supabase record changes as the trigger.

Open Make 03DeployHost Background Jobs

Deploy a lightweight service on Railway to handle scheduled RSVP deadline reminders and vote tally finalization if Make scenarios are insufficient for time-based triggers.

Open Railway

GatherGrid: Neighborhood & Community Group Event Planner

Is this worth validating?

Build this if

Avoid this if

Validate first

Why this exists

Customer problem

Who pays

Business model

What do you need next?

What would it take to run?

Build the first paid use case

Who it serves and what it must change

What ships now and what waits

Included

Excluded

Screens, actions, and states

Primary flow

Loading, empty, and error states

Entities and business rules

Business rules

Components, integrations, and controls

Integrations

Data flow

Failure handling

Security

Rate limits

Definition of done for the MVP

Deliverables

Acceptance criteria

Enough technology for the first version

Lovable

Supabase

Make

Railway

Why this is sufficient

Not required for the MVP

Build, price, and deploy the MVP

Copy this into a builder

Your build prompt is ready

Model the MVP operating cost

Usage assumptions

$30-$90 per month

Included

Not included

Pricing basis

Pick the operational tradeoff

Railway

Good fit

Limitation

Vultr

Good fit

Limitation

DigitalOcean

Good fit

Limitation

Prototype, automate, then deploy

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