# Free tools by Rubitec

Free calculators and compliance tests: payroll costs, missed calls, app development pricing, automation ROI, and EU AI Act and GDPR compliance.

- Human version: https://rubitec.co/tools
- llms.txt: https://rubitec.co/llms.txt

## Missed calls cost calculator

Every call you do not answer is a customer calling the next business on their list. Enter your numbers and see what it costs you per month and per year.

https://rubitec.co/tools/missed-calls-cost-calculator

## Cost of an employee in Spain calculator

Gross salary is only part of it. Add employer social security, holidays, public holidays and absenteeism to get the total annual cost and the cost per hour actually worked. Based on 2026 Spanish contribution rates.

https://rubitec.co/tools/employee-cost-calculator-spain

## App development cost calculator

Set the real scope of your app and get a market price range and an estimated timeline. No forms, no calls: the result appears instantly.

https://rubitec.co/tools/app-development-cost-calculator

## EU AI Act risk level test

Five questions to classify your use of AI under Regulation (EU) 2024/1689 and see which obligations apply and from when. Updated with the June 2026 Digital Omnibus, which deferred the high-risk rules.

https://rubitec.co/tools/eu-ai-act-risk-test

## Receptionist vs AI agent calculator

Compare the real annual cost of a person at reception with an AI phone agent, and how many hours a year the phone goes unanswered in each case.

https://rubitec.co/tools/ai-receptionist-vs-receptionist-calculator

## AI automation ROI calculator

Enter the hours a manual process eats today and what automating it costs. You get the annual saving, the break-even point in months and the three-year return.

https://rubitec.co/tools/ai-automation-roi-calculator

## No-show cost calculator

An empty slot is a paid hour that bills nothing. Calculate the monthly and annual loss, and how much of it automated reminders would recover.

https://rubitec.co/tools/no-show-cost-calculator

## GDPR checklist for generative AI

Eight questions to see whether your use of generative AI meets GDPR and what exactly is missing. No sign-up, and nothing you answer is stored.

https://rubitec.co/tools/gdpr-generative-ai-checklist