# ALDA GPS vs Tanger Med Authenticator

The clearest difference is update cadence: ALDA GPS at weekly against Tanger Med Authenticator's every 16 months. On price, ads, in-app purchases and device support there is nothing between them.

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

ALDA GPS ships an update weekly, Tanger Med Authenticator every 16 months. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ALDA GPS | Tanger Med Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 16 months |
| Size | 44 MB | 20 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tamilarasan Kannan](https://appshunter.io/developer/1500116258) | [TANGER MED PORT AUTHORITY](https://appshunter.io/developer/1268410921) |

## What reviewers say

### ALDA GPS

[App page](https://appshunter.io/ios/app/alda-gps/id1670804189)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tanger Med Authenticator

[App page](https://appshunter.io/ios/app/tanger-med-authenticator/id6746862748)

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

**In-app purchases:** none


## Frequently asked questions

### Is ALDA GPS free?

ALDA GPS is free to download, with no in-app purchases.

### Is Tanger Med Authenticator free?

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

### Do ALDA GPS or Tanger Med Authenticator have ads?

Neither ALDA GPS nor Tanger Med Authenticator shows ads.

### Which is updated more often, ALDA GPS or Tanger Med Authenticator?

ALDA GPS ships an update weekly, and Tanger Med Authenticator every 16 months. Most recently, ALDA GPS was updated on October 4, 2026 and Tanger Med Authenticator on October 10, 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.*