About PiPi Worlds
Understand a question and try the calculation yourself. PiPi Worlds is a collection of tools and guides operated by PiFl Labs.
How content is made and checked
AI assists with writing, translation and some images. AI-generated source images are not camera photographs or customer photos. Some examples are app conversions of these generated images. The relevant page identifies the source image and explains how the result was made; it is not a customer testimonial or an independent performance test.
Read the sources, access dates and review notes to see what was checked. AI-assisted review and code tests do not replace human expert review. Fictional examples and calculation exercises are distinct from real user experiences.
Our Korean, English and Japanese sections are not simply translations of one another. Questions and tool coverage can differ by language. Switching language does not mean that the same article exists there.
For a correction, send the page URL, the sentence in question and a verifiable original source through our contact page. Do not send personal information or real payment or health records. A source-check date records when a check happened, not a guarantee that the information remains current.
What is available
18 tools · 29 English guides
Using our information
- Tool results depend on inputs and assumptions. For important decisions, consult the relevant organization’s current guidance and original documents.
- A source link is a starting point for verification. If you find an error or outdated information, send us the page URL.
- Calculation tests and factual content review are different. Passing an automated check is not expert review or a guarantee of accuracy.
How data is handled
Calculators and converters generally run in your browser. Group scheduling stores data on a server so participants can share it. We also use a language cookie, usage events and app-link counts. The privacy policy describes the data and retention settings for each feature.
Operator and contact
PiFl Labs · pifl-labs.com