# Previnet OTP vs OWL VIS

The clearest difference is update cadence: Previnet OTP at every 3 months against OWL VIS's every 33 months. OWL VIS's advantage is iOS requirement (12.0 vs 16.6). 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.

Previnet OTP ships an update every 3 months, OWL VIS every 33 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Previnet OTP | OWL VIS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 33 months |
| Monetization | Free | — |
| Size | 19 MB | 12 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Previnet S.p.A.](https://appshunter.io/developer/585612736) | [SICEP S.r.l.](https://appshunter.io/developer/1017353302) |

## What reviewers say

### Previnet OTP

[App page](https://appshunter.io/ios/app/previnet-otp/id680474557)

This utility app generates unique, time-based verification codes for enhanced security when accessing web services. It supports multiple accounts and offers convenient activation via QR code or URL.

**Highlights:** Generates time-based verification codes, Provides enhanced security for web services, Supports multiple accounts, QR Code activation, URL activation

**Features:** macOS Compatibility

**In-app purchases:** none


### OWL VIS

[App page](https://appshunter.io/ios/app/owl-vis/id1360230088)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Previnet OTP free?

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

### Is OWL VIS free?

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

### Do Previnet OTP or OWL VIS have ads?

Neither Previnet OTP nor OWL VIS shows ads.

### Which is updated more often, Previnet OTP or OWL VIS?

Previnet OTP ships an update every 3 months, and OWL VIS every 33 months. Most recently, Previnet OTP was updated on November 1, 2026 and OWL VIS on November 8, 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.*