Small tools that do one thing

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Free tools, no signup

Every one of these works whether or not the app it belongs to ever ships.

• The 2026 two-rate mileage calculator — 2026 has two IRS business mileage rates split at June 30. Most calculators still use one.
• Apple's required-reason API reference — all five categories and all sixteen approved reason codes, transcribed from Apple's rendered documentation because that page returns an empty shell to a plain fetch.
• The job pricing floor calculator — your costs and your real sellable hours produce the number below which a job loses you money.
• Free conversation question sets — bids for connection, after a fight, moving in together, money.
• What menopause symptom scales are — and what a score can and cannot tell you.

Open data

Apple privacy-manifest SDK → npm map — all 86 SDKs on Apple's third-party requirements list mapped to the React Native and Expo packages that pull each one in. 50 have an RN route; 32 of those arrive transitively, which is where ITMS-91061 rejections come from. CC BY 4.0, corrections welcome.

How this is written

Every claim links to a primary source. Competitor prices come from the vendor's own page with a date, and where a price cannot be verified at source, no number is published at all. Evidence is labelled by its strength. Our own products are disclosed on every page they appear on — including the comparison pages where a competitor is the better answer, which is most of them.

Read the editorial standards. They are published so they can be held against us.

Contact

rsb.baker@gmail.com. About · One person, so that reaches whoever wrote both the code and the page.

Questions and answers