APP IDEA #2 · SOCIAL MEDIA · SAAS

PostBridge — cross-posting to every platform in one click, $11K MRR in months

Built by Jack Friks in October 2024 to solve his own problem: paying $50-150/month for Buffer/Hootsuite for what should be a simple task. PostBridge does exactly one thing — schedule and post content to multiple social media platforms at once. Hit $11K MRR. Built-in-public, founder-audience distribution, solo founder.

$11K

MRR achieved after launch (self-reported, founder-documented)

Oct 2024

Founded — months to $11K, not years

$39.99/yr

Annual pricing — affordable vs Buffer's $50+/mo

Solo

One founder, personal frustration turned into product

01 / HOW IT WORKS

What the app actually does

PostBridge's whole pitch is simplicity — the existing tools add complexity to justify higher prices, PostBridge strips that away and charges less.

Connect all social accounts in one place

Instagram, TikTok, LinkedIn, Twitter/X, YouTube, Facebook — all managed from one dashboard with OAuth connections.

Compose once — post everywhere simultaneously

Write the caption and upload the media once; PostBridge posts it to every connected platform at the same time or at a scheduled time.

A content studio generates post ideas and captions

AI assists with generating content suggestions based on your niche and past performance — the "content studio" feature that's been bringing in new customers organically.

Clean scheduling calendar with drag-and-drop

Simple visual calendar that shows what's scheduled across all platforms — no complex analytics dashboards or agency features.

02 / INDIA POTENTIAL

Does this work as an India play

India has one of the largest creator economies in the world — tens of millions of people posting across Instagram, YouTube, and regional apps. Most can't afford Buffer's dollar pricing.

₹999/yr

Realistic India-priced annual plan vs PostBridge's $39.99/year (~₹3,300) — opens the mass creator segment.

Reels+

Scheduling specifically optimized for Instagram Reels, YouTube Shorts, and Moj simultaneously — the three platforms Indian creators live on.

Regional

Multi-language content suggestions in Hindi, Tamil, Telugu for regional language creator niches.

Influencers

India's 20M+ micro-influencers managing 3-5 platforms simultaneously are the direct addressable market.

03 / THE WEEKEND BUILD

Friday to Sunday, hour by hour

Scoped to Instagram and Twitter/X only for v1 — social platform APIs take most of the weekend. Add platforms after validating the core cross-posting mechanic.

Friday

Evening · 3 hrs

7–8 PM Set up a Next.js project, Supabase for auth/database, and implement OAuth for Instagram and Twitter/X.

8–9 PM Build the media upload flow — store images/videos in Supabase Storage.

9–10 PM Build the compose screen — caption input, media attachment, and platform selector toggle.

Saturday

Full day · 7 hrs

Morning Wire up the Instagram Graph API and Twitter/X API v2 to publish posts directly via the official APIs.

Afternoon Build the scheduling system — pick a future date/time, store the post, and trigger via a Vercel Cron Job.

Evening Build the basic content calendar showing all scheduled posts across platforms.

Sunday

5 hrs

Morning Add the AI content studio — Gemini API generates caption suggestions and hashtag recommendations based on the media and niche.

Afternoon Razorpay integration — Rs999/year annual plan or Rs149/month monthly.

Evening Test end-to-end: write a post, schedule it, confirm it publishes on both platforms, record the demo for your first post.

04 / APP STACK

What you're actually building with

Next.js 14

Frontend + API routes

Compose screen, calendar, and API publishing calls in one framework.

Supabase

Auth + database + storage

Stores scheduled posts and uploaded media files.

Instagram Graph API + Twitter/X API v2

Platform publishing

The official APIs for publishing to each platform.

Vercel Cron

Scheduled publishing

Triggers publishing of scheduled posts at the right time.

Gemini API

Content studio

Generates caption and hashtag suggestions based on media and niche.

Razorpay

Payments

Rs999/year annual or Rs149/month monthly plans.

05 / WHERE & HOW TO DEPLOY

Going live

Heads up: Instagram Graph API requires a Facebook Business account and app review for publishing permissions. Twitter/X API v2 free tier has rate limits — test against them before promising unlimited posting.

Set up a Facebook Developer app and apply for Instagram Content Publishing permission FIRST — this takes a few days, so do it before building.

Set up a Twitter Developer account and get API v2 write access credentials.

Push your project to GitHub, import into Vercel, add all environment variables.

Set up a Vercel Cron Job to check for and publish scheduled posts every minute.

Deploy and test the full compose to schedule to publish loop on both platforms before launch.

06 / MARKETING & REVENUE

Getting paying users

How to market it

Post the "I post to 5 platforms in 30 seconds flat, here is how" reel — time-saved demo is the entire hook.
Run 10-20 reels/day across multiple accounts targeting different creator types: food, travel, fashion, business.
The in-app content studio brings in customers organically per the PostBridge founder — prioritize building it well.
Target Indian micro-influencer communities and WhatsApp groups where scheduling tools are actively discussed.
Price aggressively vs global tools — Rs999/year is the number that gets word-of-mouth in Indian creator communities.

Who pays, and why

Indian micro-influencers managing 3-5 platforms who cannot afford Buffer or Later at dollar pricing.
Small businesses and D2C brands managing their own social media without a dedicated social media manager.
Marketing agencies managing multiple client accounts who need a simpler, cheaper tool than Hootsuite.

Scenario

Paying users/mo

Revenue/mo

Slow start

500 users x Rs83/mo equiv. (Rs999/yr)

Rs41,500/mo

Creator community traction + reels

5,000 users x Rs83/mo equiv.

Rs4,15,000/mo

10-20 reels/day + creator partnerships

30,000 users x Rs83/mo equiv.

Rs24,90,000/mo

07 / START BUILDING

Paste this into Claude or GPT

This prompt sets up the full build context so the AI scopes, plans, and starts coding the project with you from message one.

BUILD_PROMPT.txt

I want to build a social media cross-posting and scheduling tool for the Indian creator market, inspired by PostBridge, scoped to ship a working version in a single weekend. Core flow: 1. User connects Instagram and Twitter/X accounts via OAuth. 2. User composes a post once — writes a caption, uploads media, selects which platforms to post to. 3. User can post immediately or schedule for a future date/time. 4. Scheduled posts are stored and published by a Vercel Cron Job via official platform APIs. 5. A content studio feature uses Gemini API to suggest captions and hashtags based on media and niche. 6. A scheduling calendar shows all upcoming posts across platforms. Stack: Next.js 14, Supabase, Instagram Graph API, Twitter/X API v2, Vercel Cron, Gemini API, Razorpay Rs149/month or Rs999/year. Deploy: Vercel. Help me step by step: 1. Walk me through the Facebook/Instagram Developer app setup and permission requirements. 2. Build the OAuth connection flow for both platforms. 3. Build the compose screen with media upload. 4. Wire up the Instagram and Twitter/X APIs to publish posts. 5. Build the scheduling system with Vercel Cron trigger. 6. Add the Gemini content studio. 7. Wire up Razorpay. Keep explanations short and India-context aware. Clearly flag the Instagram API review timeline since it is a prerequisite blocker not to leave to Sunday. Push me to ship the smallest working version first. If I get stuck, tell me to ask @buildwithkanhaa.