# Omega Calculator vs Summa

The clearest difference is in-app purchases: Summa at none against Omega Calculator's 1. Summa also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 83%). Omega Calculator's advantage is ratings volume (44 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Omega Calculator sells 1 one-off in-app purchase. Summa asks for nothing beyond the download.

Summa holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Omega Calculator has 44 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of Omega Calculator's written reviews are positive against 100% of Summa's.

Omega Calculator ships an update every 2 months, Summa every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Omega Calculator | Summa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (44 ratings)](https://appshunter.io/ios/app/omega-calculator/id1528068503/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/summa-precision-made-simple/id6757430332/reviews)** |
| Number of ratings | **44** | 1 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 24 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Rupertus](https://appshunter.io/developer/1610637143) | [Ville Scholin](https://appshunter.io/developer/1832654283) |

## 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 |


### Summa

[App page](https://appshunter.io/ios/app/summa-precision-made-simple/id6757430332)

A clean, fast, and beautifully designed calculator for everyday math, scientific calculations, and quick conversions. Features live preview, history, favorites, and smart gestures for effortless and accurate calculations.

**Highlights:** Live preview of results, History and Favorites for calculations, Scientific functions (exponents, roots, trig), Built-in unit and currency converter, Smart gestures for interaction, Multiple themes and icon options

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

**In-app purchases:** none


## Frequently asked questions

### Is Omega Calculator free?

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

### Is Summa free?

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

### Which has better reviews, Omega Calculator or Summa?

Summa is rated higher. Omega Calculator averages 4.7 out of 5 from 44 ratings, while Summa averages 5.0 from 1 ratings.

### Do Omega Calculator or Summa have ads?

Neither Omega Calculator nor Summa shows ads.

### Which is updated more often, Omega Calculator or Summa?

Omega Calculator ships an update every 2 months, and Summa every 5 weeks. Most recently, Omega Calculator was updated on October 24, 2026 and Summa on October 25, 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.*