# Syndoc Pro vs Chronos Authenticator

The clearest difference is in-app purchases: Chronos Authenticator at none against Syndoc Pro's 1. Chronos Authenticator also leads on update cadence (every 6 days vs every 2 months) and ratings volume (3 vs 1). Syndoc Pro's advantage is iOS requirement (9.0 vs 17.0). On price, rating, ads and device support there is nothing between them.

Both are free to download. Syndoc Pro sells 1 in-app purchase, starting at $2.99 per month. Chronos Authenticator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Syndoc Pro against 5.0 for Chronos Authenticator. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Syndoc Pro ships an update every 2 months, Chronos Authenticator every 6 days. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Syndoc Pro | Chronos Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/syndoc-pro/id1533649767/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/chronos-authenticator/id6503929490/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Subscription | **Free** |
| Size | 26 MB | 11 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vedist Systems Private Limited](https://appshunter.io/developer/1559179261) | [Joel-David Wong](https://appshunter.io/developer/1750409239) |

## What reviewers say

### Syndoc Pro

[App page](https://appshunter.io/ios/app/syndoc-pro/id1533649767)

Access and manage files across multiple cloud storage providers with a unified view. Offers advanced features like encryption, compression, media conversion, and streaming, all within an intuitive interface. Includes 100 GB of cloud storage and in-app support.

**Highlights:** Unified cloud storage view, Multi-provider file access, File encryption and decryption, Compress and extract files, Media streaming and conversion, 100 GB cloud storage included

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Syndoc Pro | $2.99 | per month |


### 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


## Frequently asked questions

### Is Syndoc Pro free?

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

### Is Chronos Authenticator free?

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

### Which has better reviews, Syndoc Pro or Chronos Authenticator?

Syndoc Pro and Chronos Authenticator are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Syndoc Pro or Chronos Authenticator have ads?

Neither Syndoc Pro nor Chronos Authenticator shows ads.

### Which is updated more often, Syndoc Pro or Chronos Authenticator?

Syndoc Pro ships an update every 2 months, and Chronos Authenticator every 6 days. Most recently, Syndoc Pro was updated on October 9, 2026 and Chronos Authenticator on October 20, 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.*