# Omega Calculator vs Calculator Express with Notes

The clearest difference is ads: Omega Calculator at none against Calculator Express with Notes's shown. Omega Calculator also leads on rating (4.7 vs 4.5) and review sentiment (83% vs 69%). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Omega Calculator sells 1 one-off in-app purchase and Calculator Express with Notes sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Omega Calculator holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 44 and 47 respectively. Written reviews point the same way: 83% of Omega Calculator's written reviews are positive against 69% of Calculator Express with Notes's.

Omega Calculator ships an update every 2 months, Calculator Express with Notes monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Omega Calculator | Calculator Express with Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (44 ratings)](https://appshunter.io/ios/app/omega-calculator/id1528068503/reviews)** | [4.5 (47 ratings)](https://appshunter.io/ios/app/calculator-express-with-notes/id1604079825/reviews) |
| Number of ratings | 44 | **47** |
| Positive reviews | **83.3% of reviews** | 69.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 28 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Rupertus](https://appshunter.io/developer/1610637143) | [RAMAN KHVASHCHEUSKI](https://appshunter.io/developer/1437493298) |

## What reviewers say

### Omega Calculator

[App page](https://appshunter.io/ios/app/omega-calculator/id1528068503)

A beautiful and intuitive calculator app for iPhone and iPad, offering both basic arithmetic and advanced scientific functions. It features a smooth, fluid interface with large, colorful buttons and high-quality mathematical typesetting. Results are saved to a history tape and synced across devices, with customizable themes available.

**Highlights:** Basic and scientific calculation modes, Intuitive and fluid interface, High-quality mathematical typesetting, History tape for saved calculations, Customizable themes, Advanced functions (Pro version)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Omega Pro | $6.99 | one-time |


### 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 |


## Frequently asked questions

### Is Omega Calculator free?

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

### Is Calculator Express with Notes free?

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

### Which has better reviews, Omega Calculator or Calculator Express with Notes?

Omega Calculator is rated higher. Omega Calculator averages 4.7 out of 5 from 44 ratings, while Calculator Express with Notes averages 4.5 from 47 ratings.

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

Calculator Express with Notes shows ads; Omega Calculator does not.

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

Omega Calculator ships an update every 2 months, and Calculator Express with Notes monthly. Most recently, Omega Calculator was updated on October 24, 2026 and Calculator Express with Notes on October 24, 2026.

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