# Vivaldi Powerful Web Browser vs Kontakt Synchronizator

The clearest difference is iOS requirement: Kontakt Synchronizator at 15.0 against Vivaldi Powerful Web Browser's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Vivaldi Powerful Web Browser ships an update fortnightly, Kontakt Synchronizator monthly. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Vivaldi Powerful Web Browser | Kontakt Synchronizator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.5K ratings)](https://appshunter.io/ios/app/vivaldi-powerful-web-browser/id1633234600/reviews)** | — |
| Number of ratings | **4.5K** | — |
| Positive reviews | 77.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 241 MB | 25 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Vivaldi Technologies](https://appshunter.io/developer/1633234602) | [Michal Kurzdym](https://appshunter.io/developer/1599868996) |

## What reviewers say

### Vivaldi Powerful Web Browser

[App page](https://appshunter.io/ios/app/vivaldi-powerful-web-browser/id1633234600)

A powerful, private web browser designed for customization and control. It offers desktop-style tab management, built-in ad and tracker blockers, and sync capabilities across devices. Personalize your browsing experience with themes, wallpapers, and dark mode.

**Highlights:** Ad Blocker, Tracker Blocker, Desktop-like tabs, Encrypted Sync, Customizable Themes & Wallpapers, Dark Mode for Webpages, Notes & Bookmarks

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Highly customizable
- 🔒 Strong privacy and security features
- 🚀 Fast and responsive
- 💡 Innovative features like tab stacking
- 👍 Seamless cross-device sync

**What reviewers complain about**

- 🐛 Occasional crashes and performance issues
- 🔋 Battery drain concerns
- 🔒 Lack of support for third-party password managers
- 👎 Missing some basic mobile browser features (e.g., reader mode, bottom address bar)

**Reported bugs**

- Issues with ad blocker not working consistently
- Problems with tab syncing between devices
- Text input lag and delays
- Forced review prompts

**Requested features**

- Option to move address bar and navigation buttons to the bottom of the screen
- Ability to set custom search engines
- Implement a reader mode
- Add support for browser extensions
- Improve tab closing/management gestures


### Kontakt Synchronizator

[App page](https://appshunter.io/ios/app/kontakt-synchronizator/id6766851346)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vivaldi Powerful Web Browser free?

Vivaldi Powerful Web Browser is free to download, with no in-app purchases.

### Is Kontakt Synchronizator free?

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

### Do Vivaldi Powerful Web Browser or Kontakt Synchronizator have ads?

Neither Vivaldi Powerful Web Browser nor Kontakt Synchronizator shows ads.

### Which is updated more often, Vivaldi Powerful Web Browser or Kontakt Synchronizator?

Vivaldi Powerful Web Browser ships an update fortnightly, and Kontakt Synchronizator monthly. Most recently, Vivaldi Powerful Web Browser was updated on October 26, 2026 and Kontakt Synchronizator on October 6, 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.*