# OpenScreen vs Calculator .

The clearest difference is price: Calculator . at Free against OpenScreen's $5.99. OpenScreen's advantage is in-app purchases (none vs 4). On update cadence, ads, device support and iOS requirement there is nothing between them.

Calculator . is free to download; OpenScreen costs $5.99 up front. Calculator . sells 4 in-app purchases, starting at $4.99 per 7 days. OpenScreen asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OpenScreen | Calculator . |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | — | **[3.4 (10 ratings)](https://appshunter.io/ios/app/calculator-ai-math-solver/id6776479693/reviews)** |
| Number of ratings | — | **10** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 7 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [建斌 孙](https://appshunter.io/developer/1883570628) | [Hong Kong Global Cross-Border E-Commerce Co., Limited](https://appshunter.io/developer/1693750577) |

## What reviewers say

### OpenScreen

[App page](https://appshunter.io/ios/app/openscreen-screen-demo-maker/id6771039930)

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

**In-app purchases:** none


### Calculator .

[App page](https://appshunter.io/ios/app/calculator-ai-math-solver/id6776479693)

This utility app combines standard and scientific calculations with unit and currency conversions. It features a clean interface, calculation history, and automatic rate updates for currencies. Easily switch between functions without leaving the app.

**Highlights:** Standard and scientific calculator, Unit conversion (length, weight, area, volume, temperature), Currency conversion with automatic rate updates, Calculation history, Distraction-free dark interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Peak | $4.99 | per 7 days |
| Weekly Ring | $9.99 | per 7 days |
| Yearly Peak | $39.99 | per year |
| Yearly Ring | $39.99 | per year |


## Frequently asked questions

### Is OpenScreen free?

OpenScreen costs $5.99, with no in-app purchases.

### Is Calculator . free?

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

### Do OpenScreen or Calculator . have ads?

Neither OpenScreen nor Calculator . shows ads.

### Which is updated more often, OpenScreen or Calculator .?

OpenScreen ships an update fortnightly, and Calculator . fortnightly. Most recently, OpenScreen was updated on October 28, 2026 and Calculator . on October 31, 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.*