# RedZen vs When

The clearest difference is in-app purchases: RedZen at none against When's 3. RedZen also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.0). When's advantage is update cadence (every 5 days vs every 3 months) and review sentiment (100% vs 80%). On price and ads there is nothing between them.

Both are free to download. When sells 3 in-app purchases, starting at $0.99 per month. RedZen asks for nothing beyond the download.

RedZen ships an update every 3 months, When every 5 days. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RedZen | When |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/redzen/id6739883959/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 6 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [贤 邓](https://appshunter.io/developer/1780135481) | [Andras Varga](https://appshunter.io/developer/1841546733) |

## What reviewers say

### RedZen

[App page](https://appshunter.io/ios/app/redzen/id6739883959)

This lightweight browser extension helps users stay focused on Xiaohongshu by intelligently blocking the main feed. It preserves essential functions like search while offering simple controls and supporting dark/light modes. Designed for efficiency and privacy, it's completely free and ad-free.

**Highlights:** Intelligent feed blocking, Preserves search functionality, Simple on/off control, Supports dark/light modes, Lightweight and ad-free, Privacy-focused, no data collection

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### When

[App page](https://appshunter.io/ios/app/when-then-and-next/id6804155280)

This app helps you remember important dates and track recurring tasks. It offers timeline views for upcoming events and 'last time' tracking for past activities. Organize items with categories, add notes, and use widgets for quick access.

**Highlights:** Timeline view for upcoming events, Track recurring tasks, Expiry and renewal date tracking, Birthday and anniversary reminders, Home and Lock Screen widgets, Organize with categories and icons, Add notes and attachments

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $7.99 | per year |
| When Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is RedZen free?

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

### Is When free?

When is free to download, with in-app purchases available.

### Do RedZen or When have ads?

Neither RedZen nor When shows ads.

### Which is updated more often, RedZen or When?

RedZen ships an update every 3 months, and When every 5 days. Most recently, RedZen was updated on October 7, 2026 and When 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.*