# Authenticator App vs Calculator

The clearest difference is update cadence: Authenticator App at every 9 days against Calculator's every 3 months. Authenticator App also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Authenticator App sells 2 in-app purchases, starting at $39.99 per year and Calculator sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Authenticator App ships an update every 9 days, Calculator every 3 months. The most recent releases landed on September 5, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Authenticator App | Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | **Every 9 days** | Every 3 months |
| Size | 68 MB | 29 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | — |
| Age rating | 4+ | 4+ |
| Developer | [Ashish Chaklasiya](https://appshunter.io/developer/1028356298) | [Bhaskar Rao](https://appshunter.io/developer/1862718308) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-otp/id6477574808)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Premium - 1 year | $39.99 | per year |
| Authenticator Premium Lifetime | $69.99 | one-time |


### Calculator

[App page](https://appshunter.io/ios/app/calculator-simple-calculator/id6760180583)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |


## Frequently asked questions

### Is Authenticator App free?

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

### Is Calculator free?

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

### Which is updated more often, Authenticator App or Calculator?

Authenticator App ships an update every 9 days, and Calculator every 3 months. Most recently, Authenticator App was updated on September 5, 2026 and Calculator on September 18, 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.*