# Keep Browser vs あとで読む | URL Stacker

The clearest difference is update cadence: あとで読む | URL Stacker at every 2 days against Keep Browser's weekly. あとで読む | URL Stacker also leads on iOS requirement (12.0 vs 15.6). 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.

Keep Browser ships an update weekly, あとで読む | URL Stacker every 2 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Keep Browser | あとで読む | URL Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/keep-browser-tree-tabs/id6444784668/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 145 MB | 41 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [RSA TECHNOLOGIES, LIMITED LIABILITY CO.](https://appshunter.io/developer/1656876758) | [NODGE Technologies inc.](https://appshunter.io/developer/1783916062) |

## What reviewers say

### Keep Browser

[App page](https://appshunter.io/ios/app/keep-browser-tree-tabs/id6444784668)

Organize your research and browsing with tree-style tabs. Group related pages, share them across devices, and easily manage multiple open links for comparison or later review. Features include ad blocking and private browsing.

**Highlights:** Tree-style tab management, Tab group sharing, Keep Mode for research flow, Labels for tab groups, Ad blocking, Private browsing, Backup and restore

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

**In-app purchases:** none


### あとで読む | URL Stacker

[App page](https://appshunter.io/ios/app/url-stacker/id6739153459)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keep Browser free?

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

### Is あとで読む | URL Stacker free?

あとで読む | URL Stacker is free to download, with no in-app purchases.

### Do Keep Browser or あとで読む | URL Stacker have ads?

Both Keep Browser and あとで読む | URL Stacker show ads.

### Which is updated more often, Keep Browser or あとで読む | URL Stacker?

Keep Browser ships an update weekly, and あとで読む | URL Stacker every 2 days. Most recently, Keep Browser was updated on October 30, 2026 and あとで読む | URL Stacker on October 25, 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.*