All Startup Ideas

Social Media Scheduler

Build a simple social media scheduler that posts to Twitter, LinkedIn, and threads. AI-powered caption suggestions included. Full build guide.

Founders know they should post consistently on social media, but switching between Twitter, LinkedIn, and other platforms kills productivity. Buffer and Hootsuite are bloated and expensive. Most end up posting inconsistently or giving up entirely—leaving growth on the table.

Built for Developers, Solo Founders, Designers, Marketers.

Buffer publishes 140K+ paying customers and sub-$30M ARR on a mostly self-serve funnel—the indie-friendly price band works.

Typefully raised a $2M seed on a stripped-down X-only scheduler; proves willingness to pay for simpler, narrower tools.

A dead-simple scheduler focused on the platforms that matter: Twitter/X, LinkedIn, and Threads. Write once, schedule everywhere.

Suggested stack: Next.js 14 (App Router) + TypeScript, Supabase, Vercel Cron, Platform APIs, Claude / OpenAI, Stripe + Resend. Weekend scope: about 12 hours.

The Problem

Founders know they should post consistently on social media, but switching between Twitter, LinkedIn, and other platforms kills productivity. Buffer and Hootsuite are bloated and…

The Solution

A dead-simple scheduler focused on the platforms that matter: Twitter/X, LinkedIn, and Threads. Write once, schedule everywhere. Add AI to suggest captions and optimal posting…

Market Research

Buffer publishes 140K+ paying customers and sub-$30M ARR on a mostly self-serve funnel—the indie-friendly price band works.

Competitive Landscape

Buffer — The incumbent indie brand. Broad platform support, solid scheduling, but Pro tier caps channels low and AI assist feels bolted on. Best UX in the category; weakest on…

Business Model

Free ($0) — 1 connected account, 10 scheduled posts/mo, basic AI caption generator

Recommended Tech Stack

Next.js 14 (App Router) + TypeScript — Single codebase for marketing, app, and API routes. Server Actions for compose flows; strongly typed end-to-end.

AI Prompts to Build This

Copy these build prompts into Claude, Cursor, or your AI coding tool. Create a free account to unlock the full research behind them.

  1. 1. Project Setup

    Create a Next.js app for a Social Media Scheduler.

Features:
- OAuth connections for Twitter and LinkedIn
- Dashboard with calendar view of scheduled posts
- Compose modal: text area, platform toggles, date/time picker
- Queue view showing upcoming posts with edit/delete
- Settings page for connected accounts

Use Supabase for auth and database. Store posts with: content, platforms[], scheduled_time, status (scheduled/posted/failed).

  2. 2. Core Feature

    Implement the posting system:

1. Use cron job (Vercel cron or similar) to check for due posts every minute
2. For Twitter: use Twitter API v2 to create tweets
3. For LinkedIn: use LinkedIn Share API
4. Handle rate limits with exponential backoff
5. Update post status and log any errors
6. Send email notification on failure

Store OAuth tokens securely and handle refresh automatically.

  3. 3. AI Features

    Add AI-powered features:

1. Caption generator: Given a topic/idea, generate platform-optimized captions
   - Twitter: punchy, with relevant hashtags, under 280 chars
   - LinkedIn: professional tone, longer form, with call-to-action
2. Best time suggester: Analyze when similar content performs well (default to general best practices: Twitter 9am/12pm, LinkedIn 8am/5pm)
3. Thread converter: Turn a long text into a Twitter thread with proper numbering

Use Claude or GPT-4 for generation.