Who runs this
SoloEdge is an independent project by a single developer. There is no company behind it, no team, and no investors — which is also why the site has no growth-hacking pop-ups, no newsletter modal, and no reason to trap you in an account.
Why these twenty
The tools were chosen by looking at what people actually complain about when they use the existing options: a visa calculator that forgets your trips between visits, a recipe scaler that cannot handle a different tin size, a PDF redactor that uploads your contract to somebody's server. Each page here is a direct answer to one of those complaints, and each tool page says which complaint it is answering.
All twenty are listed on the front page. If a tool is not here, it is because it did not survive that filter — not because it was hard to build.
Why everything runs in your browser
It started as a privacy decision and turned out to be an engineering one. If the calculation happens on your device, there is no server to breach, no database to leak, no retention policy to write, and nothing to hand over if someone asks. It also means the tools keep working when the site is slow, and cost almost nothing to run.
You can verify the claim rather than trust it: open your browser's developer tools, go to the Network tab, and use any tool. Your inputs and files stay in the page.
How it is paid for
Two ways, both visible on the page rather than hidden in a funnel:
- Labelled ad slots. One slot per page, below the tool and its result, served by Google. Never an interstitial, never between you and an answer.
- Optional Pro unlocks. A one-time payment for the output that comes after the answer — a border-ready PDF, a batch run, a saved scenario. The core answer is always free and always will be.
The pricing page lists which tools have a Pro tier and what it adds. Payments are handled by Creem as merchant of record.
Found something wrong?
Please tell me. A calculator that returns a wrong number is the one thing this site cannot afford, and a report with the inputs you used is usually enough to fix it the same week.
Write to [email protected]. Include the tool name and the numbers or dates you entered. Reports about tax, visa and mortgage tools get priority, because those are the ones where being wrong actually costs someone money.
Contact
[email protected] — for bug reports, refunds, licensing questions, or anything else.
See also Privacy policy and Terms of use.