# Authenticator App vs Rounding Calculator & Sig Figs

The clearest difference is in-app purchases: Rounding Calculator & Sig Figs at none against Authenticator App's 10. Authenticator App's advantage is update cadence (every 3 weeks vs every 24 months) and ratings volume (917 vs 8). On price, rating, ads and device support there is nothing between them.

Both are free to download. Authenticator App sells 10 in-app purchases, starting at $6.99 per 7 days. Rounding Calculator & Sig Figs asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Authenticator App against 4.5 for Rounding Calculator & Sig Figs. That said, the two scores are not equally well evidenced: Authenticator App has 917 ratings behind it against 8, so its average is the more settled of the two.

Authenticator App ships an update every 3 weeks, Rounding Calculator & Sig Figs every 24 months. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Authenticator App | Rounding Calculator & Sig Figs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (917 ratings)](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6505110382/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/rounding-calculator-and-sig-figs/id6738045683/reviews) |
| Number of ratings | **917** | 8 |
| Positive reviews | 37.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 24 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 320 MB | 26 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [A1Apps](https://appshunter.io/developer/6801470556) | [Muhammad Awais Younas](https://appshunter.io/developer/1771187232) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6505110382)

Secure your online accounts with two-factor and multi-factor authentication. Generates time-based one-time passwords (TOTP) and OTP codes for fast, reliable logins. Includes a built-in password manager and encrypted backup for all your credentials.

**Highlights:** Two-factor authentication (2FA), Multi-factor authentication (MFA), Time-based one-time passwords (TOTP), Built-in password manager, Encrypted backup and sync, Import from other authenticator apps, Offline code generation

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly Plan | $6.99 | per 7 days |
| Pro Weekly Plan | $6.99 | per 7 days |
| Pro Weekly Plan | $9.99 | per 7 days |
| Pro Weekly Plan | $9.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Pro Yearly | $24.99 | per year |
| Pro Yearly | $49.99 | per year |
| Pro Yearly | $49.99 | per year |
| Pro Yearly | $59.99 | per year |
| Pro Yearly Plan | $59.99 | per year |


### Rounding Calculator & Sig Figs

[App page](https://appshunter.io/ios/app/rounding-calculator-and-sig-figs/id6738045683)

Easily round numbers to the nearest integer or a specified number of decimal places. Offers options to round up or down, making it suitable for students and professionals needing quick, accurate calculations for various real-world applications.

**Highlights:** Round whole numbers to nearest integer, 10, 100, or 1000, Round decimals to 1-9 places, Round up and down options, Intuitive interface, Real-world application examples

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App free?

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

### Is Rounding Calculator & Sig Figs free?

Rounding Calculator & Sig Figs is free to download, with no in-app purchases.

### Which has better reviews, Authenticator App or Rounding Calculator & Sig Figs?

Authenticator App is rated higher. Authenticator App averages 4.6 out of 5 from 917 ratings, while Rounding Calculator & Sig Figs averages 4.5 from 8 ratings.

### Do Authenticator App or Rounding Calculator & Sig Figs have ads?

Both Authenticator App and Rounding Calculator & Sig Figs show ads.

### Which is updated more often, Authenticator App or Rounding Calculator & Sig Figs?

Authenticator App ships an update every 3 weeks, and Rounding Calculator & Sig Figs every 24 months. Most recently, Authenticator App was updated on November 8, 2026 and Rounding Calculator & Sig Figs on November 4, 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.*