# Pro Calculator Kit — Unit Converter, Finance, BMI

> Unit Converter, Finance, BMI (iPhone/iPad app by 双伟 王.)

- Source: https://appshunter.io/ios/app/pro-calculator-kit/id6760807578 (this page in markdown: same URL + `.md`)
- Developer: [双伟 王](https://appshunter.io/developer/1861136667)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 2 MB
- Languages: English
- Released: 2026-03-26
- Data updated: 2026-06-29
- User reviews in markdown: https://appshunter.io/ios/app/pro-calculator-kit/id6760807578/reviews.md

## What is Pro Calculator Kit?

Pro Calculator Kit brings daily calculations, unit conversion, finance, health, dates and practical utilities into one clean app.

Free tools:
• Calculator with history
• Unit converter for length, weight, temperature, speed, area, time and more
• Percentage, discount, tip and tax tools

Pro tools:
• Loan calculator with monthly payment and amortization
• Mortgage prepayment calculator to estimate interest saved, lower payment or shorter payoff time
• Currency converter with exchange-rate reference
• Savings, fuel cost and unit price tools
• Salary, hourly pay and estimated take-home pay
• Recipe scaler by servings
• BMI, BMR and weight goal tools
• Date difference, date add/subtract and anniversaries
• GPA, number base, world time and ovulation estimate

Lifetime Pro is a one-time purchase that unlocks all Pro tools forever. Optional subscriptions may be available in some regions.

Health tools are for reference only and do not replace medical advice. Financial tools provide estimates only and are not financial advice. Currency rates are for reference.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual | $4.99 | per year |
| Monthly | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Pro | $6.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-05-20

Basic calculator, unit converter and percentage tools are now free.
Added Lifetime Pro as a one-time unlock for all advanced tools.
Added mortgage prepayment calculator to estimate interest saved, lower payment or shorter payoff time.
Improved calculator logic, repeated equals, percentage behavior and UI.

### 1.0 — 2026-03-26

No release notes.

## More apps by 双伟 王

- [ContactFlow Contacts CRM](https://appshunter.io/ios/app/contactflow-contacts-crm/id6757660693)
- [HeartStash](https://appshunter.io/ios/app/heartstash/id6760088305)
- [VaultScan AI](https://appshunter.io/ios/app/vaultscan-ai/id6762499332)
- [Deadline Bar: Time Progress](https://appshunter.io/ios/app/deadline-bar-time-progress/id6764828980)

All apps by 双伟 王: https://appshunter.io/developer/1861136667

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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 2026-06-29.*