# nsvl vs CDT VN

The clearest difference is update cadence: CDT VN at every 2 days against nsvl's every 18 months. nsvl's advantage is iOS requirement (12 vs 15.5). 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.

nsvl ships an update every 18 months, CDT VN every 2 days. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | nsvl | CDT VN |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 15.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 10 MB | 70 MB |
| Requires iOS | **12** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tran Dai Hai](https://appshunter.io/developer/1301716710) | [GEOGRAPHY SOFTWARE JOINT STOCK COMPANY](https://appshunter.io/developer/1148381187) |

## What reviewers say

### nsvl

[App page](https://appshunter.io/ios/app/nsvl/id1301716711)

**Features:** macOS Compatibility

**In-app purchases:** none


### CDT VN

[App page](https://appshunter.io/ios/app/cdt-vn/id1469180146)

This system helps fishermen manage their catch logs, transfers, and port permits. It also assists processing plants in obtaining origin certificates for seafood products and enables authorities to oversee fishing and export activities.

**Highlights:** Catch log management, Fishing transfer tracking, Port entry/exit permits, Seafood origin certificates, Fishing and export data management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is nsvl free?

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

### Is CDT VN free?

CDT VN is free to download, with no in-app purchases.

### Do nsvl or CDT VN have ads?

Neither nsvl nor CDT VN shows ads.

### Which is updated more often, nsvl or CDT VN?

nsvl ships an update every 18 months, and CDT VN every 2 days. Most recently, nsvl was updated on October 5, 2026 and CDT VN on October 19, 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.*