Saul Castro · a one-person software studio
I build Tuos, bookkeeping for Philippine businesses, this way. ProxiLoop is that same way of working, made into a desktop app while I build Tuos. It launches November 2026.
Work
ProxiLoop launches this month. Tuos is in testing, and it is not open to customers yet.
The way I build Tuos, made into an app. One AI builds, a second reviews the work, and you decide.
ProxiLoop runs the AI tools you already use side by side, keeps every plan, review and decision in one place, and shows you the next step.
Bookkeeping built around the BIR's rules, for small and medium businesses in the Philippines.
Tuos records each entry on both sides of the ledger, reads receipts and invoices into the books, and keeps each client's records apart. Payroll is being built now. Registration with the BIR is a later step.
| Date | Account | Debit | Credit |
|---|---|---|---|
| Nov 1 | Cash | ₱1,500.00 | |
| Sales | ₱1,500.00 |
How I build
Each change starts as a written plan. A different AI reads that plan. Then I decide. Here is one real example, from October 8.
The plan
On Windows, the plan said the program could guess where the cursor was, and send that guess into the AI's window as if a person had typed it.
The check
A second AI, from a different company, called this a serious mistake. The AI in the window would have believed the guess.
What I decided
I changed the plan that same day, before that part was built. The program has to look at the real cursor first. It cannot send a guess.
By November 1, that second AI had written down 368 mistakes in this build. 278 were in the plans, and 90 were in the finished work. None were the worst kind. 36 were serious, 227 were in the middle, and 105 were small. 108 older reviews did not write down a number, so they are not in the 368. See ProxiLoop.
About
I'm Saul Castro, a Navy veteran. For more than ten years I managed fiber and telecom builds, on projects for Verizon, Google Fiber, AT&T, and Comcast. The job was to keep every moving part of a project aimed at the same goal.
AetherMindForge LLC is my one-person software studio. I still work that way. Tuos is built with a plan, a second review, and my decision. ProxiLoop is that way of working, made into an app.
I would rather take the time to get something right than rush it, and I don't promise what the software can't do.
Contact
A question about ProxiLoop, Tuos, or a project. I read every message and reply myself.
Or email me at Hello@aethermindforge.com.
ProxiLoop