Need a Tool Built Just for You?
Converters, calculators, generators and other web tools, built to your requirements. You pay once, the tool is fully yours, and you can run it anywhere you like.
Just have a general idea for the site? Our free Request a Tool page is for suggestions. This page is for paid, built-for-you tools.
What We Can Build
If it can run in a web browser, there is a good chance we can build it. Some examples:
Unit and format converters
Convert units, currencies, formats or anything else you do repeatedly.
Calculators
Business, finance, health, engineering or any formula you need to run often.
File and image tools
Resize, convert, compress or reformat files and images.
Text and data tools
Generators, formatters, cleaners and other text helpers.
AI-powered tools
Tools that use an AI service in the background. These need an API key, see pricing below.
Something else
Describe it and we will tell you honestly whether and how we can build it.
What You Get
This is not a subscription or a hosted account. When we finish, the tool is handed over to you.
It is fully yours
You receive the complete files of your tool and own them. Use, change or move them as you like.
Run it anywhere
Put it on your own website, your own hosting, or open it on your own computer. You do not need Kromo Tools to keep it working.
Tested before delivery
We test the tool before we hand it over, and fix problems in our work for 30 days afterwards.
No hidden costs
The price in your accepted quote is the price you pay. Tools that use an outside service (API) may have running costs, and your quote explains them first.
How It Works
Submit your request
Describe your tool in the form below. The more detail, the more accurate the quote.
Get a quote
We reply with the final price, the timeline, and anything we need to know. Nothing is built until you agree.
Agree and pay
Once you accept the quote, we agree on a payment method that works for you.
Delivery
We build and test the tool, then hand over the complete files. They are yours to keep and run wherever you want. Free fixes for problems in what we built are included for 30 days after delivery.
Pricing
These are starting prices. Final cost depends on how complex your tool is, and you will always get a clear quote before you pay.
Standard Tool
Works on its own, no outside service
From $29 one-time
- Converters, calculators, generators and similar
- Complete tool files delivered to you
- Full ownership, run it anywhere
- Free fixes for 30 days after delivery
- Timeline agreed in your quote
API-Powered Tool
Needs an AI or other outside service
From $49 one-time + API
- Everything in Standard
- Set up with the API service you choose
- Two ways to cover API usage, see below
- Quote confirms any running costs up front
Option 1: We host it for you
The tool runs on our setup with our own API key, and we look after it for a monthly fee, starting from $49/month depending on how much it is used. This is a fair-use plan, and your quote tells you what is included. You still own the tool, but it works only while the plan is active.
Option 2: Your own API key
If you already have an API key, we set it up in your tool and you run it on your own. There is no monthly fee from us, and you pay the API provider directly for what you use. We will explain how to keep your key safe.
No hidden charges: the price in your accepted quote is the price you pay. Payment methods such as bank transfer, PayPal, Payoneer, card or JazzCash/EasyPaisa are agreed with you directly after you accept the quote.
Request Your Custom Tool
Fields marked with * are required. We read every request personally.
Request Received!
We have your request. We will review it and email you a quote and timeline, usually within 1–2 business days.
