# Chronos Authenticator vs ICS2Calendar

The clearest difference is review sentiment: Chronos Authenticator at 100% against ICS2Calendar's 50%. Chronos Authenticator also leads on price (Free vs $0.99) and rating (5.0 vs 3.0). ICS2Calendar's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On update cadence, ads and in-app purchases there is nothing between them.

Chronos Authenticator is free to download; ICS2Calendar costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chronos Authenticator holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 100% of Chronos Authenticator's written reviews are positive against 50% of ICS2Calendar's.

Chronos Authenticator ships an update every 6 days, ICS2Calendar every 8 days. The most recent releases landed on September 16, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Chronos Authenticator | ICS2Calendar |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/chronos-authenticator/id6503929490/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/ics2calendar/id6742157560/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 8 days |
| Monetization | **Free** | Paid |
| Size | 11 MB | 1 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joel-David Wong](https://appshunter.io/developer/1750409239) | [Linkas SRL](https://appshunter.io/developer/422625445) |

## 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


### ICS2Calendar

[App page](https://appshunter.io/ios/app/ics2calendar/id6742157560)

Easily import calendar events from ICS files directly into your iPhone or iPad calendar. Share files from any app, preview events, select your destination calendar, and import with a single tap for a fast and reliable experience.

**Highlights:** Import ICS calendar files, Preview events before import, Select destination calendar, Share from any app, Direct import from Files app

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

**In-app purchases:** none


## Frequently asked questions

### Is Chronos Authenticator free?

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

### Is ICS2Calendar free?

ICS2Calendar costs $0.99, with no in-app purchases.

### Which has better reviews, Chronos Authenticator or ICS2Calendar?

Chronos Authenticator is rated higher. Chronos Authenticator averages 5.0 out of 5 from 3 ratings, while ICS2Calendar averages 3.0 from 1 ratings.

### Do Chronos Authenticator or ICS2Calendar have ads?

Neither Chronos Authenticator nor ICS2Calendar shows ads.

### Which is updated more often, Chronos Authenticator or ICS2Calendar?

Chronos Authenticator ships an update every 6 days, and ICS2Calendar every 8 days. Most recently, Chronos Authenticator was updated on September 16, 2026 and ICS2Calendar on September 12, 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.*