# Calculator+ 秘密のブラウザとメモ vs Bifrost Browser

The clearest difference is in-app purchases: Bifrost Browser at none against Calculator+ 秘密のブラウザとメモ's 1. Bifrost Browser also leads on iOS requirement (15.1 vs 26.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calculator+ 秘密のブラウザとメモ sells 1 one-off in-app purchase. Bifrost Browser asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. Both last shipped on October 2, 2026.

## The numbers

| Metric | Calculator+ 秘密のブラウザとメモ | Bifrost Browser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Size | 1 MB | 39 MB |
| Requires iOS | 26.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Tomo Takahashi](https://appshunter.io/developer/1858509733) | [MASAYUKI KUROIWA](https://appshunter.io/developer/6772665067) |

## What reviewers say

### Calculator+ 秘密のブラウザとメモ

[App page](https://appshunter.io/ios/app/calculator-plus/id6756207467)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro版 | $2.99 | one-time |


### Bifrost Browser

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator+ 秘密のブラウザとメモ free?

Calculator+ 秘密のブラウザとメモ is free to download, with in-app purchases available.

### Is Bifrost Browser free?

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

### Do Calculator+ 秘密のブラウザとメモ or Bifrost Browser have ads?

Neither Calculator+ 秘密のブラウザとメモ nor Bifrost Browser shows ads.

### Which is updated more often, Calculator+ 秘密のブラウザとメモ or Bifrost Browser?

Calculator+ 秘密のブラウザとメモ ships an update every 4 days, and Bifrost Browser every 4 days. Most recently, Calculator+ 秘密のブラウザとメモ was updated on October 2, 2026 and Bifrost Browser on October 2, 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.*