# Simple Calculator. + vs KEYVOX Check

The clearest difference is price: KEYVOX Check at Free against Simple Calculator. +'s $1.99. KEYVOX Check also leads on iOS requirement (12.0 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

KEYVOX Check is free to download; Simple Calculator. + costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Calculator. + ships an update every 3 months, KEYVOX Check every 4 months. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Simple Calculator. + | KEYVOX Check |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.7 (147 ratings)](https://appshunter.io/ios/app/simple-calculator-plus/id1324927779/reviews)** | — |
| Number of ratings | **147** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 21 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [tasser gyati](https://appshunter.io/developer/1324926550) | [Blockchain Lock Inc.](https://appshunter.io/developer/1445525151) |

## What reviewers say

### Simple Calculator. +

[App page](https://appshunter.io/ios/app/simple-calculator-plus/id1324927779)

This app offers a straightforward and dependable calculator for iPhone and iPad. It includes advanced features like tax calculation, cost/selling price/margin calculations, and memory operations. A free version is available to try before purchasing.

**Highlights:** 12-digit display, Tax calculation, Cost, selling price, and gross margin calculations, Memory operations, Grand total (GT), Percentage calculation

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

**In-app purchases:** none


### KEYVOX Check

[App page](https://appshunter.io/ios/app/keyvox-check-in/id1488436331)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Calculator. + free?

Simple Calculator. + costs $1.99, with no in-app purchases.

### Is KEYVOX Check free?

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

### Do Simple Calculator. + or KEYVOX Check have ads?

Neither Simple Calculator. + nor KEYVOX Check shows ads.

### Which is updated more often, Simple Calculator. + or KEYVOX Check?

Simple Calculator. + ships an update every 3 months, and KEYVOX Check every 4 months. Most recently, Simple Calculator. + was updated on September 23, 2026 and KEYVOX Check on September 20, 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.*