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Version
1.0
Size
1.27 Mb
Updated
3 weeks ago
Released
13 Aug 2026
Description
Every real decision runs on numbers nobody actually knows. What the renovation costs. How many hours the side project eats. Whether the raise covers the higher rent.
Most of us handle this two ways, both bad: punch one made-up number into a calculator and treat the false precision as an answer, or build a spreadsheet with three tabs you'll never open again.
Ballpark is the missing middle. Write what you actually believe — "somewhere between 18 and 26 thousand" — and it hands back a range, a middle, and a picture.
Write ranges as easily as numbers Type quoted = $18k to $26k. The to key is the first thing on the keyboard. Names can have spaces, so hours per week is just a variable.
It never pretends to know more than you do The answer is shown to the width of its own uncertainty. No $47,382.19 when the real answer is "somewhere in the twenties of thousands".
Find out what's actually worth finding out The part that changes what you do next: Ballpark ranks every unknown by how much of your uncertainty it causes. "Pinning down the contractor's rate would cut your range by more than half." That's the sentence that tells you what to go research.
Units that catch your mistakes Dollars per hour times hours gives you dollars. Dollars plus hours is an error, not a wrong number.
Twelve worked examples to start from Can I afford this house? What should I charge? Will the renovation blow up? How long will my savings last? Is the side project worth quitting for? Each one is written out with the reasoning, not just the arithmetic.
Your documents are just text files Plain UTF-8, visible in the Files app. Open them anywhere, back them up, keep them long after you've stopped using this app.
Ballpark works entirely on your device. No account, no network, nothing collected.
Every feature is in the free tier — the engine, all twelve templates, units, the detail view and the sensitivity view. Ballpark Pro is a one-time purchase, not a subscription, and the only thing it changes is the three-document limit. Nothing is held back to sell back to you.
Estimates
Availability
Devices
iPhone5s
iPadAir
iPadAirCellular
iPadMiniRetina
iPadMiniRetinaCellular
iPhone6
iPhone6Plus
iPadAir2
iPadAir2Cellular
iPadMini3
iPadMini3Cellular
iPodTouchSixthGen
iPhone6s
iPhone6sPlus
iPadMini4
iPadMini4Cellular
iPadPro
iPadProCellular
iPadPro97
iPadPro97Cellular
iPhoneSE
iPhone7
iPhone7Plus
iPad611
iPad612
iPad71
iPad72
iPad73
iPad74
iPhone8
iPhone8Plus
iPhoneX
iPad75
iPad76
iPhoneXS
iPhoneXSMax
iPhoneXR
iPad812
iPad834
iPad856
iPad878
iPadMini5
iPadMini5Cellular
iPadAir3
iPadAir3Cellular
iPodTouchSeventhGen
iPhone11
iPhone11Pro
iPadSeventhGen
iPadSeventhGenCellular
iPhone11ProMax
iPhoneSESecondGen
iPadProSecondGen
iPadProSecondGenCellular
iPadProFourthGen
iPadProFourthGenCellular
iPhone12Mini
iPhone12
iPhone12Pro
iPhone12ProMax
iPadAir4
iPadAir4Cellular
iPadEighthGen
iPadEighthGenCellular
iPadProThirdGen
iPadProThirdGenCellular
iPadProFifthGen
iPadProFifthGenCellular
iPhone13Pro
iPhone13ProMax
iPhone13Mini
iPhone13
iPadMiniSixthGen
iPadMiniSixthGenCellular
iPadNinthGen
iPadNinthGenCellular
iPhoneSEThirdGen
iPadAirFifthGen
iPadAirFifthGenCellular
iPhone14
iPhone14Plus
iPhone14Pro
iPhone14ProMax
iPadTenthGen
iPadTenthGenCellular
iPadPro11FourthGen
iPadPro11FourthGenCellular
iPadProSixthGen
iPadProSixthGenCellular
Pricing by country
| Country | Price |
|---|---|
| Canada | free |
| China | free |
| France | free |
| Germany | free |
| Italy | free |
| Netherlands | free |
| Portugal | free |
| Spain | free |
| UK | free |
| India | free |
| Japan | free |
| Korea, Republic Of | free |
| Poland | free |
| Russia | free |
| Turkey | free |
| USA | free |
| Ukraine | free |
