59% of small-business invoices run more than 30 days late. 43 of 100 r/SaaS threads ask how to get lead generation. One in ten web pages now shows signs of AI writing.
Each of those numbers is the opening page of one of my products.
This store started with one free prompt pack. It is now 30 products, and the rule never changed: every product opens with published research that proves its problem is real, cites the source, then hands you the system that fixes it. Tools, not advice.
Here is the whole catalog, sorted by the problem each product attacks. One-time purchase, instant download, no subscription. The full page with all the detail lives at probiex.gumroad.com.
Getting customers
- First 100 Customers: Warm Signal Playbook · Warm signals beat cold volume: 30 contextual replies do more than 1,800 cold messages.
- 90-Day LinkedIn Content Playbook · A day-by-day system, because most founders quit by post 5.
- SaaS Founder Copy Vault · 80+ copy blocks for heroes, emails, and outreach, written to be adapted in five minutes.
- The Landing Page Conversion Audit · Median B2B pages convert at 3.8% while top performers hit 10-15%. 81% of forms get abandoned. Find your leaks, ranked by recoverable revenue.
- Silent Churn Rescue Kit · Day 7 decides most of your churn. A first-week behavior-triggered sequence, not another dashboard feature.
- Cold Outreach Reply Pack · 40+ replies sorted by the objection that killed the thread.
- GEO Operations System · A 0-100 scorecard for getting cited by ChatGPT, Perplexity, and AI Overviews, with a CLI scoring script and an llms.txt template.
- Launch Week Email Kit · The seven emails that decide a launch, with subject lines and send-day timing.
Finance
- The Late-Payment Playbook · Contract clauses, deposits, the two reminder emails most people never send, and the escalation ladder.
- Freelancer Rate Calculator · Your rate floor from real costs and true billable hours. Competitor-copied rates often hide a 14% margin.
- Break-Even CAC Calculator · The one CAC number your margins cannot survive above, before you scale spend into it.
- The Pricing Calculator · Van Westendorp bands, value-metric selection, and three tiers as a workbook.
- Runway & Breakeven Calculator · Real runway from trailing burn and committed spend, then the exact revenue where breakeven lands.
- The Freelance Cash-Flow Planner · A rolling 90-day forecast with probability weights for late invoices.
- SaaS Metrics Dashboard Kit · Paste six numbers on Monday, get the ten survival metrics with the decision each one forces.
Operations
- Founder Anti-Burnout Weekly System · A fixed weekly cadence in about 15 focused hours, so building and selling stop competing.
- Notion Content Calendar · A content database with pillars and repurposing, not a sticker board.
- Notion Founder CRM · Leads, pipeline, and contacts specified for a one-session Notion build.
- One-Person Agency Engine · Rate math, a 7-factor client scorecard, capacity thresholds, and the script for firing bad clients.
- The Indie Hacker OS · Six linked Notion databases replacing the dozen tools most solo builders juggle.
Builds
- Ship Your SaaS in 30 Days · A day-by-day plan from zero to paid, with the landing and launch templates.
- LaunchKit Starter · A production Next.js 15 starter: auth, Postgres via Drizzle, billing, i18n, tests, CI. That is the boilerplate month removed.
AI and prompt systems
- 10 Free Claude Prompts for SaaS Founders · The starter ten: research, copy, launch, analytics. No email required.
- 100 Claude Prompts for SaaS Founders · 100 copy-paste prompts across research, copy, launch, analytics, and build-in-public. PDF plus source Markdown.
- The AI-Slop Audit · A 20-tell scorecard that finds AI-written copy on your pages in 15 minutes.
- Voice AI System · Schemas, compliance checklist, and setup guide for voice workflows that survive real usage, not just the demo.
- AI Agent Blueprint Stack · Hand triage, inbox, scheduling, and reporting to supervised agents.
- n8n Solopreneur Workflows · Three production workflows that run your week: RSS digest to email, leads to Slack, sales to your ledger.
Career and teaching
- AI Resume Optimizer Spec + Kit · A weighted scoring rubric and prompt chains, so an AI resume tool ships quality instead of vibes.
- AI Literacy Engineering Kit · 30 lesson plans that teach students to think critically with AI, with worksheets, rubrics, and a policy kit.
Where to start
The free pack costs nothing and needs no email: probiex.gumroad.com/l/free-claude-prompts.
If your worry is cash this quarter, start with the calculators. Each one exists to replace a sentence you should not trust, like "we have plenty of runway."
Everything is on one page at probiex.gumroad.com, with the research notes in place before the buy button on every product, so you can check my homework before you pay for anything. Code LAUNCH20 takes 20% off any paid product while the launch lasts.
FAQ
Are these courses or templates? Systems. Spec'd databases, checklists, and workbooks you copy into your own stack. Most of them you are running the same day you buy.
What if one is not for me? Every product page shows the complete contents before you buy, so you know exactly what lands after checkout.
Last updated October 2026 · Probiex
Top comments (0)