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Contractors Calculator · iPhone and iPad

Built for fractions. Ready for the work.

Add, subtract, multiply and divide whole numbers, decimals and fractions without converting everything to decimals first.

Best for: Finish carpentry, trim, cabinet/millwork and fabrication/installation shops; remodelers and DIY.

Coming soon to the App StoreApp support

Planned $5.99 USD one-time purchase. Not yet released.

iPad landscape: 78 3/4 − 1.414 = 77 42/125 (≈ 77.336).

Devices

iPad and iPhone, either way up.

Choose a device and an orientation to see the actual app layout.

Showing iPad landscape.

iPad landscape: 78 3/4 − 1.414 = 77 42/125 (≈ 77.336).

How entry works

Enter in three taps.

Three separate pads: one for the whole number and two for the fraction. No slash typing or switching entry modes.

  1. Tap 1 · Whole number

    2

    Tap the whole number on the left pad.

  2. Tap 2 · Numerator

    3

    Tap the top number of the fraction on the upper fraction pad.

  3. Tap 3 · Denominator

    4

    Tap the bottom number on the lower fraction pad.

Each part has its own delete key, so you can fix the whole number, numerator or denominator without starting over.

Examples

The answers shown in the screenshots.

Each result appears as a simplified mixed number, with improper-fraction and decimal forms. These are pictures of the app.

  • From the iPhone landscape screenshot

    +=

    = 427/4 ≈ 106.75

  • From the iPhone portrait screenshot

    −=

    = 191/4 ≈ 47.75

  • From the iPad screenshot

    −1.414=

    ≈ 77.336

Availability

One purchase. Ready when you need it.

Contractors Calculator is coming soon to the App Store as a single purchase with nothing else to buy. Final pricing and availability will be shown in the App Store and may vary by region.

App privacy policyApp support

Planned launch price

$5.99 USD · one time

  • Planned $5.99 USD one-time purchase
  • No subscription, ads or in-app purchases
  • No account or internet connection required
  • No app data collection or tracking
  • No device permission requests
  • Calculation history stays on your device

FAQ

Common questions.

What devices does it support?

iPhone and iPad running iOS 17 or later, in portrait and landscape.

Does it work offline?

Yes. The app works fully offline and does not need an internet connection or an account.

Is there a subscription?

No. It is planned as a $5.99 USD one-time purchase with no subscription, ads, or in-app purchases. Final pricing will be shown in the App Store and may vary by region.

Does it collect my data?

No. The app does not collect data or track you, and it requests no device permissions. Calculation history stays on your device.

Can I view answers as decimals?

Yes. Answers are shown as mixed numbers, improper fractions, and decimals, and you can choose the answer format and decimal display in Settings.

Can I reuse previous answers?

Yes. Open the history and tap a previous answer to use it in a new calculation. Long-press an answer to copy it.

Does it need TradeLog Site?

No. Contractors Calculator is a standalone app and does not require a TradeLog Site account or subscription.

Where can I get help?

Visit the support page or email services@lionsync.us.

Coming soon to the App Store.

Contact LionSyncCompare products

TradeLog Site, LionSync ISO and Contractors Calculator are products of LionSync.LLC.