Who it is for
Home and small-batch soapmakers who would otherwise keep these numbers in a spreadsheet.
AI Connectors · Creative & Design
Simple SoapCalc
Calculate lye, water, and oil amounts for soap recipes
Overview
What Simple SoapCalc does
Simple SoapCalc, from Redefined Threads, handles the arithmetic behind soapmaking. A recipe is described in ordinary terms, and the app returns the quantities of lye, water, and oils that recipe requires.
Variables can be changed while the idea is still forming: which oils go in, the size of the batch, the superfat level. The sample requests range from a moisturising bar for dry winter skin to a beginner recipe built on coconut oil, olive oil, and shea butter, 500 grams in total.
Alongside the numbers, results include a plain account of how the finished bar is likely to behave and feel, which speaks to lather and texture rather than to fragrance or colour.
What stands out
It answers a narrow chemistry question and reports expected bar behaviour next to the measurements.
Availability
Where Simple SoapCalc is listed
Simple SoapCalc is listed in the ChatGPT apps directory only. Redefined Threads has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- Redefined Threads
- Filed under
- Creativity
- Listed since
- June 2026
- Authentication
- Authenticates when installed
- Website
- simplesoapcalc.com
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
Example prompts from the listing
- Create a luxurious soap recipe with unique oils using recommended values.
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This is an independent catalogue entry compiled by Node8 from Simple SoapCalc's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Redefined Threads, and inclusion here is not an endorsement.
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