# Calculator vs ThisKey

The clearest difference is ads: ThisKey at none against Calculator's shown. ThisKey also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (15.1 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator sells 2 in-app purchases, starting at $4.99 per 7 days and ThisKey sells 3 in-app purchases, starting at $14.99 per year. Whichever you choose, the download price is not the number that matters.

Calculator ships an update fortnightly, ThisKey every 5 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Calculator | ThisKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (17 ratings)](https://appshunter.io/ios/app/calculator-easycalc/id6764042259/reviews)** | — |
| Number of ratings | **17** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 89 MB | 53 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Mayur Sutariya](https://appshunter.io/developer/1824431483) | [peerapong Suddhapas](https://appshunter.io/developer/6806118704) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-easycalc/id6764042259)

This app offers a comprehensive suite of calculation tools, including basic, scientific, and financial calculators, alongside unit conversions and personal utilities. It simplifies everyday math, financial planning, and unit transformations for students and professionals alike.

**Highlights:** Basic and scientific calculations, Financial and loan calculators, Unit conversion, Expense tracking, Customizable themes, Calculation history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $14.99 | per month |


### ThisKey

[App page](https://appshunter.io/ios/app/thiskey/id6806118702)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThisKey Annual | $14.99 | per year |
| 15-day Trial | Free | one-time |
| ThisKey Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is ThisKey free?

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

### Do Calculator or ThisKey have ads?

Calculator shows ads; ThisKey does not.

### Which is updated more often, Calculator or ThisKey?

Calculator ships an update fortnightly, and ThisKey every 5 days. Most recently, Calculator was updated on October 17, 2026 and ThisKey on October 11, 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.*