# Calculator × vs Orevan Events

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

Both are free to download. Calculator × sells 4 in-app purchases, starting at $4.99 per year. Orevan Events asks for nothing beyond the download.

Calculator × ships an update every 2 months, Orevan Events monthly. The most recent releases landed on September 21, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Calculator × | Orevan Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (143 ratings)](https://appshunter.io/ios/app/calculator/id1039645790/reviews)** | — |
| Number of ratings | **143** | — |
| Positive reviews | 73.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 59 MB |
| Requires iOS | 13.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DOUBLE U s.r.o.](https://appshunter.io/developer/331787042) | [OREVAN LLC](https://appshunter.io/developer/1838424462) |

## What reviewers say

### Calculator ×

[App page](https://appshunter.io/ios/app/calculator/id1039645790)

This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.

**Highlights:** Tape Log for calculation history, Reuse, copy, and share calculations, Evaluate entire formulas at once, iPad multitasking support, Modern touch-screen design

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $4.99 | per year |
| Remove ads | $4.99 | one-time |
| Remove ads | $7.99 | one-time |
| Remove ads | $11.99 | one-time |


### Orevan Events

[App page](https://appshunter.io/ios/app/orevan-events/id1539934668)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator × free?

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

### Is Orevan Events free?

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

### Do Calculator × or Orevan Events have ads?

Calculator × shows ads; Orevan Events does not.

### Which is updated more often, Calculator × or Orevan Events?

Calculator × ships an update every 2 months, and Orevan Events monthly. Most recently, Calculator × was updated on September 21, 2026 and Orevan Events on September 26, 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.*