# Kaifa Absorber Adjustor vs Authenticator

The clearest difference is in-app purchases: Kaifa Absorber Adjustor at none against Authenticator's 2. Kaifa Absorber Adjustor also leads on ads (none vs shown) and iOS requirement (10.3 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Authenticator sells 2 in-app purchases, starting at $6.99 per 7 days. Kaifa Absorber Adjustor asks for nothing beyond the download.

Kaifa Absorber Adjustor ships an update every 3 weeks, Authenticator monthly. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Kaifa Absorber Adjustor | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 51 MB | 49 MB |
| Requires iOS | **10.3** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [I-CHIN MOTOR TECHNOLOGY Co.,Ltd](https://appshunter.io/developer/1232109399) | [Huong Dang](https://appshunter.io/developer/1896285075) |

## What reviewers say

### Kaifa Absorber Adjustor

[App page](https://appshunter.io/ios/app/kaifa-absorber-adjustor/id1274402695)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-and-vault/id6809136121)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $6.99 | per 7 days |
| Yearly Premium Access | $39.99 | per year |


## Frequently asked questions

### Is Kaifa Absorber Adjustor free?

Kaifa Absorber Adjustor is free to download, with no in-app purchases.

### Is Authenticator free?

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

### Do Kaifa Absorber Adjustor or Authenticator have ads?

Authenticator shows ads; Kaifa Absorber Adjustor does not.

### Which is updated more often, Kaifa Absorber Adjustor or Authenticator?

Kaifa Absorber Adjustor ships an update every 3 weeks, and Authenticator monthly. Most recently, Kaifa Absorber Adjustor was updated on October 26, 2026 and Authenticator on October 29, 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.*