# Thomson Reuters Authenticator vs KerfCalc

The clearest difference is in-app purchases: Thomson Reuters Authenticator at none against KerfCalc's 1. Thomson Reuters Authenticator also leads on iOS requirement (14.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. KerfCalc sells 1 one-off in-app purchase. Thomson Reuters Authenticator asks for nothing beyond the download.

## The numbers

| Metric | Thomson Reuters Authenticator | KerfCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.2 (1.8K ratings)](https://appshunter.io/ios/app/thomson-reuters-authenticator/id1155604687/reviews)** | — |
| Number of ratings | **1.8K** | — |
| Positive reviews | 10.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free | — |
| Size | 6 MB | 30 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Thomson Reuters](https://appshunter.io/developer/314213170) | [Deakyu Lee](https://appshunter.io/developer/6780601722) |

## What reviewers say

### Thomson Reuters Authenticator

[App page](https://appshunter.io/ios/app/thomson-reuters-authenticator/id1155604687)

This app provides an additional layer of security for accessing Thomson Reuters software. It uses multi-factor authentication to verify your identity, protecting your data with a combination of something you know, have, and are.

**Highlights:** Multi-factor authentication, Secure data protection, Approve/ignore sign-on requests, Automatic setup via QR code, Support for multiple accounts, Offline code generation

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy setup
- 🔒 Secure authentication
- 👍 Works as expected

**What reviewers complain about**

- 🐛 Difficult to migrate to new device
- 👎 Unintuitive and confusing
- 🤯 Impossible to use without corporate account

**Reported bugs**

- QR code not working or unavailable
- Fails to authenticate even with correct credentials
- Permanently locked out after device change

**Requested features**

- Ability to delete old accounts
- Clearer instructions and documentation
- Notification support for approvals


### KerfCalc

[App page](https://appshunter.io/ios/app/kerfcalc-woodworking-math/id6797046477)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KerfCalc Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Thomson Reuters Authenticator free?

Thomson Reuters Authenticator is free to download, with no in-app purchases.

### Is KerfCalc free?

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

### Do Thomson Reuters Authenticator or KerfCalc have ads?

Neither Thomson Reuters Authenticator nor KerfCalc shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*