From Basis Land
Off-grid is a practice, not a place.Letters load from basisland.com. Nothing about you is sent.
Span uses this as the middle of the range. The months fade around it rather than stop, because no one knows exactly.
Life expectancy by country and sex from UN World Population Prospects 2024 (estimates for 2023). Survival is modelled with a Gompertz-Makeham curve fitted to that figure and conditioned on your current age. No future medical progress is assumed, so real odds are probably a little better. A population average, not a forecast about you. Dogs use a study of 584,734 UK dogs (O’Neill et al., 2024) and cats a UK study of cat life tables (Teng et al., 2024). If you enter what you know, Span uses it instead of averages. Your details stay on this device.
A person or an animal you share life with. Span shows the months you are likely to share. It never shows their end on its own.
Span uses this as the middle of the range. The months fade around it rather than stop, because no one knows exactly.
Your data
Everything, including your journey, lives only on this device. A backup is a small file you keep, for a new phone or a cleared browser.
Your journey stays on this device.
Each dot is one month. Tell Span when yours began.