# Chatika vs Mark To Do

The clearest difference is update cadence: Chatika at fortnightly against Mark To Do's every 2 months. 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.

Chatika ships an update fortnightly, Mark To Do every 2 months. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Chatika | Mark To Do |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chatika/id6743194488/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 8 MB | 2 MB |
| Requires iOS | **17.1** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chenxing Liu](https://appshunter.io/developer/1789893586) | [hyojin bae](https://appshunter.io/developer/1893353821) |

## What reviewers say

### Chatika

[App page](https://appshunter.io/ios/app/chatika/id6743194488)

This AI chat client offers extensive customization and privacy for your conversations. It acts as a private browser for AI, allowing you to connect with various AI models using your own API keys without data storage on external servers. Enjoy features like web search, image support, and dynamic prompt adjustments.

**Highlights:** Bring Your Own Key (API), Rich Chat Actions (quote, fork, revert), Web Search integration, Image support for AI models, Customizable Persona System, Dynamic AI parameter settings, Thought Process View

**Features:** macOS Compatibility

**In-app purchases:** none


### Mark To Do

[App page](https://appshunter.io/ios/app/mark-to-do/id6762204004)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chatika free?

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

### Is Mark To Do free?

Mark To Do is free to download, with no in-app purchases.

### Do Chatika or Mark To Do have ads?

Neither Chatika nor Mark To Do shows ads.

### Which is updated more often, Chatika or Mark To Do?

Chatika ships an update fortnightly, and Mark To Do every 2 months. Most recently, Chatika was updated on October 5, 2026 and Mark To Do on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*