Built by an operator using it on real month-end close work.

Julian German is the founder of Celmaste Capital, a Canadian holding company that runs Celmaste Shop (an ecommerce brand) and Synergy Seafoods (a wholesale operation). He built ArnBooks because month-end close work kept turning into a hunt for Stripe payout context, vendor drift, missing receipts, and basic answers about where the money was going.

Today he's dogfooding ArnBooks on Celmaste Capital's own QuickBooks Online workflows. The same issue-list and review system you would use is the one being tested on his books.

The project started in April 2026 as an AI-assisted bookkeeping experiment on Celmaste's own books. The first version did one thing: read available transaction data and answer plain-English questions about it. It worked well enough that closing the experiment felt worse than productizing it.

Intuit approved ArnBooks for production access on April 30, 2026. The early manual pilot work in May 2026 shaped the Solo launch path.

We're early. Solo is the launch plan for solopreneurs who already use QuickBooks Online and want founder month-end close support without a full audit: $99/month or $990/year. Any hands-on audit or custom help is limited, manual, and separate from public Solo checkout.

No pretend testimonials. No fake metrics. The honest pitch is that early Solo customers are helping us validate the product path before ArnBooks becomes broadly self-serve.

Every feature in ArnBooks is something Celmaste Capital needed first. Stripe payout review, multi-channel category cleanup guidance, subscription audit, plain-English Q&A — none of it ships publicly until it has been tested against real internal close work.

That's the bar. If it doesn't help Celmaste's month-end review, it doesn't become a customer-facing promise.