Calculators
All-in-one calculator app with 1,001 calculators offline, no ads, and no data collection
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An offline calculator app with 1,001 calculators across 28 categories, 250 free forever, no ads, and trade tools for construction, plumbing, electrical and HVAC
1001 Pro Calculators and Tools is an all-in-one calculator app that provides 1,001 calculators across 28 categories including mortgage and property, loans, tax and VAT, salary and work, business, health and fitness, home and construction, engineering, maths, and conversions. Two hundred fifty calculators are free forever with no account required, while Pro subscription unlocks all calculators and worksheets. The app works entirely offline with every calculation performed on the phone, collects no data, shows no advertisements, and never transmits anything you type. Trade Tools add specialized solvers for construction, plumbing, electrical, HVAC, machining, welding, automotive, landscaping, painting and reference work. The app also includes features for quoting jobs, managing timesheets and budgets, and exporting documents as PDFs or images.
Free: 250 calculators forever. Pro: 7-day free trial, then £0.99 first year (introductory price), £2.99 per year after. Trade Tools: £9.99 once (includes one year of Pro).
If you want one that works offline, shows no adverts and collects no data, 1001 Pro Calculators and Tools puts 1,001 calculators in one app, across 28 categories, with every answer showing its working. 250 are free for good, there is no account, and nothing you type leaves your phone.
Yes. 1001 Pro Calculators and Tools shows no adverts on any tier, free or Pro. The advertising library is not in the app at all, so there is nothing to switch off.
Trade Tools cover Plumbing (pipe, offsets, flow, pressure, drainage), Electrical (cable, conduit fill, voltage drop, motors) and HVAC (ducts, airflow, superheat, subcooling), plus Machining, Welding, Automotive, Landscaping, Painting and Reference. That is 133 solvers in ten tool sets.
Yes, all of it. Every figure is worked out on the phone. There is no account, and the app does not even ask for internet access, so it works the same in flight mode as on full signal.
It puts 1,001 calculators in one app, in 28 categories: mortgage and property, loans, tax and VAT, salary and work, business, health and fitness, home and construction, engineering, maths, conversions and more. Search by name or in plain words, such as “bmi” or “mortgage”, and every answer shows its working.
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1001 Pro Calculators and Tools has a free listing. The owner can unlock the full profile with a paid launch for $5:
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