# Chronos Authenticator vs Build Momentum

The clearest difference is update cadence: Chronos Authenticator at every 6 days against Build Momentum's monthly. Build Momentum's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chronos Authenticator ships an update every 6 days, Build Momentum monthly. The most recent releases landed on September 16, 2026 and February 21, 2026 respectively.

## The numbers

| Metric | Chronos Authenticator | Build Momentum |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Monetization | Free | — |
| Size | 11 MB | 40 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joel-David Wong](https://appshunter.io/developer/1750409239) | [Dinu Mihnea](https://appshunter.io/developer/1812909481) |

## 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


### Build Momentum

[App page](https://appshunter.io/ios/app/build-momentum/id6745558765)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chronos Authenticator free?

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

### Is Build Momentum free?

Build Momentum is free to download, with no in-app purchases.

### Do Chronos Authenticator or Build Momentum have ads?

Neither Chronos Authenticator nor Build Momentum shows ads.

### Which is updated more often, Chronos Authenticator or Build Momentum?

Chronos Authenticator ships an update every 6 days, and Build Momentum monthly. Most recently, Chronos Authenticator was updated on September 16, 2026 and Build Momentum on February 21, 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.*