# OneCalc Pro — One Calculator, Calm & Smart

> One Calculator, Calm & Smart (iPhone/iPad app by ANNMAR limited.)

- Source: https://appshunter.io/ios/app/onecalc-pro/id6778816405 (this page in markdown: same URL + `.md`)
- Developer: [ANNMAR limited](https://appshunter.io/developer/1883172374)
- Category: Utilities, Finance
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 11 MB
- Languages: American English
- Released: 2026-10-06
- Data updated: 2026-10-09
- User reviews in markdown: https://appshunter.io/ios/app/onecalc-pro/id6778816405/reviews.md

## What is OneCalc Pro?

One calm, capable calculator that replaces a dozen apps cluttering your Home Screen.

OneCalc brings together everyday maths, scientific functions, currency and unit conversion, and a genuinely useful pay tracker — all in one beautifully simple app, with no ads, no accounts, and no data leaving your device.

Standard and scientific calculator
Switch instantly between a clean everyday calculator and full scientific functions, with a scrollable history so you never lose a previous sum.

Pay and overtime tracker
Built for shift workers. Add jobs and pay rates, set night and weekend multipliers, and watch your earnings update live as you work. No spreadsheets, no guesswork.

Scan and Solve
Point your camera at a maths problem — textbook, worksheet, whiteboard — and get a clear, step-by-step AI-powered solution in seconds.

Live currency, unit and time conversion
Convert between 30+ currencies using official ECB rates, with full offline support. Unit, time and percentage converters are built right in for travel, cooking, work or study.

Discounts and loans, sorted
Work out sale prices and savings instantly, or calculate loan repayments before you commit. Practical tools, no faff.

Make it yours
Choose from 9 accent themes to match your style, use the Apple Watch app for calculations on the go, and add the interactive widget to your Home Screen for instant access.

OneCalc is free to download and use for standard and scientific calculations. Premium unlocks the pay tracker, Scan & Solve, currency conversion, loan and discount calculators, and all themes, with a 3-day free trial. Premium is available as a £9.99 per year subscription or a £29.99 one-time lifetime purchase — your choice, no pressure.

One app instead of many. No ads. No accounts. Your data stays on your device.

Download OneCalc and see how calm a calculator can feel.

https://annmarstudio.co.uk/onecalc/terms
https://annmarstudio.co.uk/onecalc/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| OneCalc Premium Annual | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| OneCalc Unlock Everything | $29.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-10-06

Fixed the app name shown on the App Store. No other changes.

### 1.0.0 — 2026-10-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*