# SD Tech Messenger vs BioSmart ID

The clearest difference is update cadence: BioSmart ID at every 7 months against SD Tech Messenger's every 14 months. BioSmart ID also leads on iOS requirement (11.0 vs 14.0). 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.

SD Tech Messenger ships an update every 14 months, BioSmart ID every 7 months. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SD Tech Messenger | BioSmart ID |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 7 months** |
| Size | 51 MB | 28 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Textable](https://appshunter.io/developer/1395042035) | [PROSOFT-BIOMETRIKS, OOO](https://appshunter.io/developer/1468272248) |

## What reviewers say

### SD Tech Messenger

[App page](https://appshunter.io/ios/app/sd-tech-messenger/id1561430455)

**Features:** macOS Compatibility

**In-app purchases:** none


### BioSmart ID

[App page](https://appshunter.io/ios/app/biosmart-id/id6499214734)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SD Tech Messenger free?

SD Tech Messenger is free to download, with no in-app purchases.

### Is BioSmart ID free?

BioSmart ID is free to download, with no in-app purchases.

### Do SD Tech Messenger or BioSmart ID have ads?

Neither SD Tech Messenger nor BioSmart ID shows ads.

### Which is updated more often, SD Tech Messenger or BioSmart ID?

SD Tech Messenger ships an update every 14 months, and BioSmart ID every 7 months. Most recently, SD Tech Messenger was updated on October 2, 2026 and BioSmart ID on September 30, 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.*