Enter your mix details
Enter your mold's volume and the powder-to-water mixing ratio.
For your casting ideasLess calculating. More casting.
Calculate powder and water for your casting projects. Save molds and powder types, and leave scattered scraps of paper behind.
From mold to mixture
Enter your mold volume and mixing ratio, check the amounts, and save your details for next time.
Check the amounts
calculates powder in grams and water in milliliters. You can focus on measuring and casting.
Keep it for next time
Save your molds and powder types with their details, photos, and notes. Your next project doesn't have to start from scratch.
A home for your casting ideas
01
Your amounts at a glance
uses your mold volume and mixing ratio to calculate how much powder and water you need. Powder is shown in grams, water in milliliters.
02
Measure once. Find it again.
Keep your molds in your collection with their volume, name, photos, and notes. There's no need to measure them again.
03
Every powder, its own ratio
Save your powder types with a name, mixing ratio, photos, and notes. Keep the details for your next mix together.
04
More order. Fewer scraps.
Photos help you recognize your molds and powder types. Notes keep your useful details close, instead of getting lost on scraps of paper.
05
Works without internet
works entirely offline, with no account required. Your saved data stays on your iPhone.
06
Start for free
Use the calculator for free and save up to three molds and two powder types. A one-time purchase of 1.99 USD removes both limits.
A look inside
What's coming next
is in development. Here's what we're working on and the next step we have planned.
ReleasedIn progressPlanned
- In progressVersion 1.0 • November 2026
Release
The first version of
is released to the public via the AppStore. - PlannedVersion 1.1 • December 2026
iCloud-Sync
Data can be stored in the personal iCloud storage, encrypted.
Have a question?
Have a question, an idea, or feedback about ? Email us at hello@curlburg.de.
Who is for?
For hobby crafters who work with casting powder. helps you calculate amounts and keep your molds and powder types organized.
What do I need for a calculation?
You need your mold's volume and the powder-to-water mixing ratio. uses these to calculate powder in grams and water in milliliters.
How much does cost?
The core features are free. You can save up to three molds and two powder types. A one-time purchase of 1.99 USD lets you save unlimited molds and powder types. There is no subscription or separate trial.
Do I need an account or an internet connection?
No. works entirely offline and without an account. Your saved data stays on your iPhone.
Is an iPad version planned?
The first version is being developed for iPhone. A dedicated iPad version may be considered if there is interest, but it is not yet scheduled. If you'd like to use on iPad, email us at hello@curlburg.de.