Field guides · Editorial standards
How we research.
Clear sources, useful comparisons and an honest account of what we know.
What we publish
Sol publishes guides about natural light and tools that calculate it. We write and maintain these pages as the maker of Sol. Our iPhone app is coming soon; the web tools described as available can be used today.
How a recommendation earns its place
We start with a reader’s task, consult primary sources and name the evidence behind important claims. A comparison states its review date, the free and paid boundaries we can establish, and meaningful limitations. A missing detail means it was not established; it does not mean a product lacks the feature.
Documentation, tests and forecasts
Vendor documentation is labelled as documentation. We only describe hands-on tests when we have actually performed and recorded them. Publisher images are credited and do not stand in for our own testing. A demonstration using Sol’s calculations is not a comparative accuracy study.
Our relationship to the products
We make Sol and disclose that relationship in comparisons. The current field guides have no affiliate links. We recommend other products when their documented capabilities fit the task, and distinguish Sol’s available web tools from planned native features.
Dates and corrections
A guide’s review date changes when its content is substantively reviewed, not simply when the site is rebuilt. Live forecasts display their calculation timestamps separately. When official sources disagree, we show the disagreement. Substantive corrections receive a new review date.
Following the guides
The RSS feed and JSON Feed list published field guides with their real publication and revision dates. Feed readers can follow these without an account. The launch email list remains a separate promise: one email when Sol ships.