CharLock.com

Lock in consistent characters across unlimited images for stories and comics.

Score: 8.1/10MexicoMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Solo founders of AI image generators can't differentiate their products from Midjourney, causing users to compare and immediately leave.

Solution

Solo founders use CharLock to generate AI images where characters remain identical across scenes, eliminating Midjourney's inconsistency issues. Users upload a reference image once, and the AI maintains facial features, clothing, and poses perfectly. This creates sticky differentiation as users build narratives without starting over.

Target Audience

Solo founders building AI image generators without teams or funding

Differentiator

Reference-based character locking with IP-adapter tech for 95% consistency, unbeatable for sequential storytelling.

Brand Voice

supportive

Features

Character Reference Upload

must-have8h

Upload one image to lock character appearance for all future gens.

Scene Generation

must-have12h

Prompt-based scene creation with locked character.

Batch Sequence

must-have15h

Generate 4-16 image sequences from story outline.

Pose & Expression Control

must-have10h

Slider controls for character poses and emotions.

History & Remix

must-have8h

Browse, edit, and remix past generations.

Upscale & Variations

nice-to-have6h

One-click HD upscale and style variations.

Export Pack

nice-to-have4h

ZIP download with all assets for comics.

Share Links

nice-to-have5h

Public shareable galleries of sequences.

Total Build Time: 68 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
subscription_tiertextYes

characters

ColumnTypeNullable
iduuidNo
user_iduuidNo
reference_urltextNo
nametextYes

Relationships:

  • β€’ user_id -> users.id

generations

ColumnTypeNullable
iduuidYes
user_iduuidNo
character_iduuidYes
prompttextNo
image_urltextNo
created_attimestampNo

Relationships:

  • β€’ user_id -> users.id
  • β€’ character_id -> characters.id

API Endpoints

POST
/api/generations

Generate image with character lock

πŸ”’ Auth Required
POST
/api/characters

Upload and save character reference

πŸ”’ Auth Required
GET
/api/generations

Fetch user generations

πŸ”’ Auth Required
POST
/api/subscribe

Handle Stripe subscription

πŸ”’ Auth Required
GET
/api/usage

Get user usage stats

πŸ”’ Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind + shadcn/ui
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Replicate API for AI genSupabase Storage

Build Timeline

Week 1: Core auth & DB setup

25h
  • βœ“ User signup/login
  • βœ“ DB schema
  • βœ“ Basic dashboard

Week 2: Character upload & first gen

30h
  • βœ“ Reference upload
  • βœ“ AI generation endpoint

Week 3: Gallery & history

25h
  • βœ“ Generations list
  • βœ“ Remix feature

Week 4: Sequence & payments

30h
  • βœ“ Batch gen
  • βœ“ Stripe integration

Week 5: Polish & nice-to-haves

20h
  • βœ“ Upscale
  • βœ“ Exports

Week 6: Landing & launch

15h
  • βœ“ LP copy
  • βœ“ SEO setup
Total Timeline: 6 weeks β€’ 160 hours

Pricing Tiers

Free

$0/mo

Low-res only

  • βœ“1 character lock
  • βœ“10 gens/month
  • βœ“Watermarked

Pro

$15/mo
  • βœ“Unlimited characters
  • βœ“200 gens/month
  • βœ“HD downloads

Unlimited

$49/mo
  • βœ“All Pro + priority queue
  • βœ“API access
  • βœ“Custom styles

Revenue Projections

MonthUsersConversionMRRARR
Month 12002%$60$720
Month 61,2004%$720$8,640

Unit Economics

$25
CAC
$360
LTV
5%
Churn
85%
Margin
LTV:CAC Ratio: 14.4xExcellent!

Landing Page Copy

Consistent Characters, Endless Stories

Ditch Midjourney's flip-flopping faces. Lock your hero once, generate infinite scenes.

Feature Highlights

βœ“95% character consistency
βœ“Story sequence batches
βœ“Pro tools for creators

Social Proof (Placeholders)

"'Finally, my comic characters stay the same!' - Indie Artist"
"'Game-changer for storyboarding.' - Novelist"

First Three Customers

DM 10 indie comic creators on Twitter/X with a free trial link, offer custom demo generations based on their work. Post 'before/after' consistency demos on r/comics and IndieHackers forums. Email list from Product Hunt AI tools commenters.

Launch Channels

Product Huntr/SaaSIndie HackersTwitter #AIart

SEO Keywords

consistent character ai generatorai comic character creatorstable ai faces for stories

Competitive Analysis

Midjourney

midjourney.com
Subscription $10+
Strength

High quality

Weakness

Poor consistency across gens

Our Advantage

Character locking beats remix roulette

Leonardo.ai

leonardo.ai
Credits $10+
Strength

Fine-tuning

Weakness

Complex for sequences

Our Advantage

One-click sequences

🏰 Moat Strategy

User-saved character library data trains better models over time

⏰ Why Now?

AI consistency tech like IP-adapters matured in 2024, creator economy exploding with webtoons/comics.

Risks & Mitigation

technicalmedium severity

AI consistency fails on diverse prompts

Mitigation

Fallback to manual remix, test 100+ refs pre-launch

markethigh severity

Users stick to free Midjourney Discord

Mitigation

Free tier hooks with locks

financialmedium severity

Replicate API costs spike

Mitigation

Usage caps + self-hosted fallback

Validation Roadmap

pre-build3 days

Twitter poll: 'Would you pay $15/mo for consistent AI characters?'

Success: 50+ yes votes

mvp14 days

Beta with 20 users, track retention

Success: 40% week 2 return

Pivot Options

  • β†’Expand to video keyframes
  • β†’Niche to game sprites
  • β†’Prompt optimizer tool

Quick Stats

Build Time
160h
Target MRR (6 mo)
$2,000
Market Size
$500.0M
Features
8
Database Tables
3
API Endpoints
5
CharLock.com - Complete Startup Blueprint | Startup Tribunal