# Calculator Express with Notes vs RPN

The clearest difference is in-app purchases: RPN at none against Calculator Express with Notes's 2. RPN also leads on ads (none vs shown). Calculator Express with Notes's advantage is update cadence (monthly vs every 6 months) and device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. Calculator Express with Notes sells 2 one-off in-app purchases. RPN asks for nothing beyond the download.

Calculator Express with Notes ships an update monthly, RPN every 6 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Calculator Express with Notes | RPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (47 ratings)](https://appshunter.io/ios/app/calculator-express-with-notes/id1604079825/reviews)** | — |
| Number of ratings | **47** | — |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 1 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RAMAN KHVASHCHEUSKI](https://appshunter.io/developer/1437493298) | [Joachim Seland Graff](https://appshunter.io/developer/1845679029) |

## What reviewers say

### Calculator Express with Notes

[App page](https://appshunter.io/ios/app/calculator-express-with-notes/id1604079825)

A beautifully designed utility app offering six essential tools, including currency, unit, and percentage converters, plus calculators for BMI, tips, and world time. Users can customize the app's appearance and manage calculation history with notes and labels.

**Highlights:** Currency converter, Unit converter, Percentage calculator, BMI calculator, Tip calculator, World time converter, Customizable appearance, Calculation history with notes

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads -50% off | $1.99 | one-time |
| Remove Ads | $4.99 | one-time |


### RPN

[App page](https://appshunter.io/ios/app/rpn/id6754224532)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Express with Notes free?

Calculator Express with Notes is free to download, with in-app purchases available.

### Is RPN free?

RPN is free to download, with no in-app purchases.

### Do Calculator Express with Notes or RPN have ads?

Calculator Express with Notes shows ads; RPN does not.

### Which is updated more often, Calculator Express with Notes or RPN?

Calculator Express with Notes ships an update monthly, and RPN every 6 months. Most recently, Calculator Express with Notes was updated on October 24, 2026 and RPN on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*