Map the task
We watch how the task is done today and write the spec.
Custom internal tools
Custom internal tools that replace spreadsheets
Keishmer Studio builds small custom web apps for companies in the United States and Colombia that run on spreadsheets, inbox copy-paste and manual reports: lead lists, data calendars, review panels, deployment checkers. One focused tool with an admin panel from $3,000, built and maintained by the same partner.
Not an ERP. A focused tool that removes the manual task your team repeats every week — built in weeks, owned by you.
Updated: October 2026
Tasks we have replaced
- A shared spreadsheet is your real database
- Monday reports built by copying emails
- Checking deploys against approvals by hand
- Reviewing translations across many tabs
What an internal tool includes
- One-page spec: the task, the data, the users
- Admin panel with roles and simple sign-in
- Connects to your data: Supabase, APIs, sheets
- Deployment, monitoring and documentation
- Training for your team
- Repository and accounts in your name
The process
- 01
- 02
Prototype
A working version with real data in 1–2 weeks.
- 03
Build
Admin panel, roles, integrations and tests.
- 04
Run
Deployment, documentation and improvements as the team uses it.
Pricing
One focused tool with admin panel
from$3,000
Continuous development and several tools: Partner plan from $5,500/mo.
Starting prices. Final pricing depends on your business — get in touch for a tailored quote.
Internal tools questions
What are internal tools? Examples.
Software only your team uses: a lead list with statuses, a calendar that pulls market data, a panel to review content before publishing, a checker that compares deployed versions. Small, specific and owned by you.
How much does it cost to develop custom software?
A focused internal tool starts at $3,000 and takes 3–6 weeks. Agencies model similar tools at $28,000 (280 hours at $100). The difference is scope: one task, one tool, no ERP.
Custom software vs. SaaS vs. spreadsheets: which one?
Spreadsheets until the task breaks (shared edits, errors, manual reports). SaaS when a product does exactly what you need at a fair per-seat price. Custom when the task is specific to your company and the per-seat cost or the workarounds are higher than building it.
What are the disadvantages of custom software?
Someone has to maintain it. That's why every tool ships with documentation, monitoring and the option of a monthly plan — and the code is yours if you want another team to continue.
Why would a company build custom software?
Two reasons: the task is specific to how you work, or the cost of doing it by hand (hours, errors, delays) is higher than the tool. We help you check both before building.
Which task does your team repeat every week?
Describe it in two lines. We'll tell you within 24 hours whether a tool makes sense and what it would cost.
Describe the task ↗