# Karakeep App vs Inbox Zero

The clearest difference is in-app purchases: Karakeep App at none against Inbox Zero's 2. Karakeep App also leads on iOS requirement (16.4 vs 18.0). Inbox Zero's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. Karakeep App asks for nothing beyond the download.

Karakeep App ships an update every 5 weeks, Inbox Zero weekly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Karakeep App | Inbox Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (44 ratings)](https://appshunter.io/ios/app/karakeep-app/id6479258022/reviews)** | — |
| Number of ratings | **44** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 56 MB | 35 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Mohamed Bassem](https://appshunter.io/developer/1735323299) | [Inbox Zero Inc.](https://appshunter.io/developer/1880462164) |

## What reviewers say

### Karakeep App

[App page](https://appshunter.io/ios/app/karakeep-app/id6479258022)

Effortlessly save links, notes, and images with automatic AI-powered tagging for quick retrieval. Search through all your saved content, including link contents, at blazing fast speeds. Organize your saved items into custom lists and share content from any app.

**Highlights:** Automatic AI tagging, Full-text search, Custom lists, Sharing extension, Save links, notes, and images

**Features:** Vision Pro support

**In-app purchases:** none


### Inbox Zero

[App page](https://appshunter.io/ios/app/inbox-zero-ai-email-assistant/id6759736561)

This AI-powered assistant helps you manage your email inbox efficiently. It prioritizes important messages, drafts replies in your style, and helps you unsubscribe from unwanted newsletters. Automate email handling with custom rules and stay in control of your communications.

**Highlights:** Prioritize important emails, Draft AI-assisted replies, Unsubscribe from newsletters, Bulk archive emails, Create custom automation rules, Manage multiple Gmail accounts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inbox Zero Starter Monthly | $19.99 | per month |
| Inbox Zero Starter Annual | $199.99 | per year |


## Frequently asked questions

### Is Karakeep App free?

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

### Is Inbox Zero free?

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

### Do Karakeep App or Inbox Zero have ads?

Neither Karakeep App nor Inbox Zero shows ads.

### Which is updated more often, Karakeep App or Inbox Zero?

Karakeep App ships an update every 5 weeks, and Inbox Zero weekly. Most recently, Karakeep App was updated on October 25, 2026 and Inbox Zero on October 24, 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.*