# Chronos Authenticator vs SlideCrop

The clearest difference is in-app purchases: Chronos Authenticator at none against SlideCrop's 1. Chronos Authenticator also leads on update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

Chronos Authenticator ships an update every 6 days, SlideCrop every 2 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Chronos Authenticator | SlideCrop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chronos-authenticator/id6503929490/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 11 MB | 10 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Joel-David Wong](https://appshunter.io/developer/1750409239) | [Sira Rojanasakul](https://appshunter.io/developer/1880580256) |

## What reviewers say

### Chronos Authenticator

[App page](https://appshunter.io/ios/app/chronos-authenticator/id6503929490)

This open-source app provides secure two-factor authentication using time-based and counter-based methods. It offers end-to-end encryption for token data and optional iCloud backup and sync for convenience. Easily import and export your authentication tokens.

**Highlights:** Open-source, End-to-end encrypted token storage, Optional iCloud backup and sync, Token export and import, Anonymous usage (no account required)

**In-app purchases:** none


### SlideCrop

[App page](https://appshunter.io/ios/app/slidecrop-slide-scanner-and-pdf/id6759816828)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SlideCrop Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is Chronos Authenticator free?

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

### Is SlideCrop free?

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

### Do Chronos Authenticator or SlideCrop have ads?

Neither Chronos Authenticator nor SlideCrop shows ads.

### Which is updated more often, Chronos Authenticator or SlideCrop?

Chronos Authenticator ships an update every 6 days, and SlideCrop every 2 weeks. Most recently, Chronos Authenticator was updated on October 27, 2026 and SlideCrop on October 28, 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.*