# 秘密のプライベートロックブラウザー vs Bifrost Browser

The clearest difference is update cadence: Bifrost Browser at every 3 days against 秘密のプライベートロックブラウザー's every 70 months. 秘密のプライベートロックブラウザー's advantage is iOS requirement (8.0 vs 15.1). 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.

秘密のプライベートロックブラウザー ships an update every 70 months, Bifrost Browser every 3 days. The most recent releases landed on October 12, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 秘密のプライベートロックブラウザー | Bifrost Browser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 70 months | **Every 3 days** |
| Size | 1 MB | 77 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Rikka Takanashi](https://appshunter.io/developer/1090786849) | [MASAYUKI KUROIWA](https://appshunter.io/developer/6772665067) |

## What reviewers say

### 秘密のプライベートロックブラウザー

[App page](https://appshunter.io/ios/app/id1147897563)

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

**In-app purchases:** none


### Bifrost Browser

[App page](https://appshunter.io/ios/app/bifrost-browser/id6772665065)

**In-app purchases:** none


## Frequently asked questions

### Is 秘密のプライベートロックブラウザー free?

秘密のプライベートロックブラウザー is free to download, with no in-app purchases.

### Is Bifrost Browser free?

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

### Do 秘密のプライベートロックブラウザー or Bifrost Browser have ads?

Neither 秘密のプライベートロックブラウザー nor Bifrost Browser shows ads.

### Which is updated more often, 秘密のプライベートロックブラウザー or Bifrost Browser?

秘密のプライベートロックブラウザー ships an update every 70 months, and Bifrost Browser every 3 days. Most recently, 秘密のプライベートロックブラウザー was updated on October 12, 2026 and Bifrost Browser on October 18, 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.*