Numbers people will act on, and an audit trail behind them.
Software that touches money has a higher bar: every balance is a time series, every read is logged, and nothing should be architecturally capable of moving funds it was not meant to.
- Read-only
- scoped at the token
- Append-only
- ledgers, not current values
- Logged
- every access, queryable
What we hear
If any of this sounds familiar…
01
The number is right today and wrong tomorrow
A system storing current balances cannot answer what something was worth last March. History has to be a design decision, not a feature added later.
02
Nobody can prove who looked
A customer asks who accessed their data and there is no log to consult. In this sector that is not an inconvenience.
03
A correction rewrites the past
A balance gets fixed and the chart shows a fictional jump on the day of the fix rather than a corrected history.
What we build
The pieces this sector actually needs.
Account aggregation
Read-only sync from banks and brokerages, scoped so the application cannot initiate a transfer even if it wanted to.
Event-sourced ledgers
Balances stored as movements and derived by replay, so a correction fixes history rather than inventing a step change.
Multi-currency
Holdings resolved to one reporting currency using the rate on the day, not today's rate applied backwards.
Access logging
Append-only records of every session and read, retained and searchable before anybody asks for them.
2FA and passkeys
Strong authentication with recovery flows designed deliberately rather than left to a reset email.
Export
Full data export in a format a spreadsheet opens, because leaving should be a supported operation.
Where this comes from
Proven somewhere real.
Charten is a live net-worth ledger we delivered: read-only bank and brokerage sync, event-sourced balances, multi-currency, 2FA, access logging and encryption at rest. You can open it right now.
Go and read it
How it is bought
Usually one of these engagements.
Web Applications
Fixed-price project
Customer portals, operational dashboards, booking systems and internal tools. The things a spreadsheet used to do until it stopped coping.
Data & Analytics
Fixed-price project
A warehouse, agreed metric definitions and dashboards built around the decision rather than around the available columns.
Cloud & DevOps
Fixed-price project
Infrastructure in code, a pipeline on every commit, and alerting that reaches you before a customer does.
Practice areas that apply
Other sectors we work in
All 12 industries →Restaurants & Hospitality
Multi-location ordering, POS integration, back-of-house inventory and recipe-level food costing.
Retail & Ecommerce
POS-connected storefronts, payment gateway routing, and catalogue sync that survives merchant edits.
Home & Consumer
Subscription products, mobile-first experiences, and the sync problems that come with shared household data.
Tell us how your business actually runs.
The process, not the software you think you need. We’ll come back within one business day.
Phone
+1 (407) 796-2376Reply time
One business day, from an engineer
Based in
Orlando, Florida · serving the United States
What happens next
- A reply within one business day, from an engineer
- A thirty-minute call, with no qualifying call before it
- A written scope and a fixed number, if it fits