IterationLog: Public Build-in-Public Progress Journal with Milestone Diffing

The Problem

Builders on r/indiehackers and Twitter/X who 'build in public' consistently report that their progress threads get scattered across social platforms, making it impossible to look back and see what actually changed between Month 1 and Month 6 — the narrative arc is lost. IterationLog is a structured micro-journal where founders log weekly updates (MRR, users, key decision made, what flopped) and the app automatically generates a 'diff' view showing exactly how the product, metrics, and thinking evolved over time. The public profile doubles as a credibility portfolio that founders can share with potential users, investors, or co-founders.

Target Audience

Indie founders and solo builders who are actively building in public on Twitter/X or r/indiehackers and want a canonical home for their journey

Monetization Angle

Free public profiles; $6/mo Pro for private logs, CSV export, custom domain, and embeddable milestone widget for landing pages

Recommended Tech Stack

Why Now

Build-in-public has become a primary distribution strategy for indie founders, but the platforms it happens on (Twitter/X, Threads) are algorithmically hostile to older posts, creating demand for a permanent, searchable archive.

MVP Scope

A founder creates a project, logs 3 fields per week (MRR, active users, one key learning), and gets a public URL showing their timeline with automatic percentage-change annotations between entries.

AI Angle

Optional AI weekly summary that reads the last 4 entries and writes a one-paragraph narrative of the founder's trajectory, suitable for copying into a newsletter or Twitter thread.

Primary Risk

Distribution risk — the value compounds over time but founders must post consistently for months before the 'diff' feature becomes impressive, creating a high early-churn window.

Validation Checklist

• Post 'Where do you archive your build-in-public updates so they don't disappear?' on r/indiehackers and catalog the workarounds people describe
• Build a no-code version using Notion + Zapier and offer it free to 10 active build-in-public founders to test the logging habit
• Measure 30-day retention on the no-code version — if founders are still logging at week 4, the habit is real
• Launch a public 'leaderboard' of most-improved MRR on Product Hunt as a growth mechanic and measure signups from it

Who Would Pay For This

Likely buyers are people already trying to solve this problem with manual workarounds. Start with Indie founders and solo builders who are actively building in public on Twitter/X or r/indiehackers and want a canonical home for their journey and validate urgency before adding secondary features.

First 10 Users

Find the first 10 users by searching for recent complaints around "indie hacker community" in Reddit, developer communities, GitHub issues, and niche Slack or Discord groups. Offer a concierge version first: manually solve the workflow for a few users, then automate only the repeated steps.

Why This Idea Has Legs

• Sourced from real discussions and complaints across Reddit and social media
• Cross-checked against recurring demand signals in the IdeaGenius archive
• Difficulty rated Easy — buildable by a solo developer or small team
• Clear monetization path from day one

Generate Your Full Project Spec

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