How I built a SaaS in 10 days using SaasRock’s codebase

July’s goal was to build in public an actual SaaS for 2 reasons:

• Validate SaasRock as a production-ready SaaS starter
• Launch my own SaaS

The problem

In Mexico, there are already a lot of invoicing platforms (QuickBooks, CONTPAQi, Aspel…), but none are simple and robust at the same time, and there’s not a single platform that offers taxpayers the service to generate invoices for their receipts.

The solution

I called it Factura.so, like Notion.so, but with Factura (Invoice in Spanish).
It has 2 main features:

• Forward all your invoices to yourcompany@factura.so
• Submit your receipts photos and we’ll generate the invoice for you

With these 2 features, the headline became:

Factura.so — The only platform you need to request and receive invoices.

How I built it

I documented my journey in a youtube series called “Building a SaaS with SaasRock”. Here’s the summary of each video, or click here to view them all.

• Day 1 — Setup and Taxpayer Model
• Day 2 — Postmark, Supabase, and ngrok
• Day 3 — Custom routes for List view and New form
• Day 4 — Custom Workflow Logic & Custom Overview Route
• Day 5 — Email Attachments to XML rows & Retry Webhook Attempts
• Day 6 — Receipts entity with related Taxpayer and XML entities
• Day 7 — Plan Limits, ZIP file extractions & Landing Page
• Day 8 & 9 — Final touches and Upcoming Features
• Day 10 — Launch Day!

The code

Up to day 7, the code is available for SaasRock Enterprise subscribers.

The end result

Landing page

I need to communicate that with this platform, you could Request and Receive invoices, hence the emphasis:

Dashboard

3 blocks here:

• Summary: All my XMLs, Receipts, and Invoices (from 30 days to date).
• Receipts: Stats by workflow state (Pending, Invalid, or Processed).
• XMLs: The SaaS is around XMLs, so it makes sense to show the last 10.

My Receipts

Using SaasRock’s Entity Builder I created 3 views:

• Pending: A table of pending receipts.
• All: A table of all receipts.
• Photos: A grid of all receipt photos.

My XMLs

XMLs can be created:

• Manually: User uploads an .xml file
• Email: Send or forward emails with .xml files to yourcompany@factura.so
• Sync: By adding a Taxpayer Credential (see My Invoices).

My Invoices

If a user uploaded their Taxpayer Credential, I sync their invoices with the SAT.WS API:

My Emails

SaasRock comes with an out-of-the-box inbound emails feature, I use it to create XML Entity Rows if there are attachments of type .xml and .pdf.

My Subscription (prices in MXN)

The business model is simple:

• Test: A freemium plan to test all the main features.
• Essential: For small companies.
• Business: For medium/large companies.

What’s Next for SaasRock?

Right now I have post-launch depression, where I don’t know what I’m going to do next 🤣. But I have written down some ideas:

Let me know what you think 😀!

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