# Calculator vs Flex Calculators

The clearest difference is iOS requirement: Calculator at 13.0 against Flex Calculators's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Calculator sells 1 one-off in-app purchase and Flex Calculators sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calculator ships an update every 8 days, Flex Calculators every 10 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Calculator | Flex Calculators |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Size | 25 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [jongku han](https://appshunter.io/developer/1871971456) | [An Le](https://appshunter.io/developer/1863975090) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-number-block/id6759218122)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Flex Calculators

[App page](https://appshunter.io/ios/app/flex-calculators/id6761326502)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is Flex Calculators free?

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

### Do Calculator or Flex Calculators have ads?

Neither Calculator nor Flex Calculators shows ads.

### Which is updated more often, Calculator or Flex Calculators?

Calculator ships an update every 8 days, and Flex Calculators every 10 days. Most recently, Calculator was updated on November 9, 2026 and Flex Calculators on November 5, 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.*