# Zulip vs IO Mail

The clearest difference is update cadence: IO Mail at daily against Zulip's monthly. 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.

Zulip ships an update monthly, IO Mail daily. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Zulip | IO Mail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (16 ratings)](https://appshunter.io/ios/app/zulip/id1203036395/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 39.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 33 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kandra Labs, Inc.](https://appshunter.io/developer/1194159660) | [Ali Kemal Celebioglu](https://appshunter.io/developer/6816632018) |

## What reviewers say

### Zulip

[App page](https://appshunter.io/ios/app/zulip/id1203036395)

This app provides organized team chat for groups of any size, enabling users to read and respond to messages in context. It helps maintain focus by allowing users to catch up on topics of interest at their own pace. The application is open-source and available as a cloud service or self-hosted solution.

**Highlights:** Organized team chat, Contextual message reading, Topic-based conversations, Focus maintenance, Open-source software, Cloud and self-hosted options

**Features:** Vision Pro support

**In-app purchases:** none


### IO Mail

[App page](https://appshunter.io/ios/app/io-mail/id6818774366)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zulip free?

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

### Is IO Mail free?

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

### Do Zulip or IO Mail have ads?

Neither Zulip nor IO Mail shows ads.

### Which is updated more often, Zulip or IO Mail?

Zulip ships an update monthly, and IO Mail daily. Most recently, Zulip was updated on October 16, 2026 and IO Mail on October 15, 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.*