# To Do List vs CZI Sound

The clearest difference is in-app purchases: CZI Sound at none against To Do List's 2. CZI Sound also leads on iOS requirement (13.0 vs 17.6). To Do List's advantage is update cadence (every 3 weeks vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. To Do List sells 2 in-app purchases, starting at $1.99 per month. CZI Sound asks for nothing beyond the download.

To Do List ships an update every 3 weeks, CZI Sound every 8 months. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | To Do List | CZI Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/to-do-list-task-manager/id1581807016/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Monetization | Freemium | — |
| Size | 8 MB | 64 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Accessible Resources Ltd](https://appshunter.io/developer/1389365061) | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) |

## What reviewers say

### To Do List

[App page](https://appshunter.io/ios/app/to-do-list-task-manager/id1581807016)

This AI-powered task manager offers inclusive features like voice commands and customizable displays. It helps users prioritize tasks, manage their day hands-free, and sync across devices, making productivity accessible to everyone.

**Highlights:** AI-driven task prioritization, Voice command integration, Customizable fonts and themes, Screen-reader compatibility, Cross-device syncing

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | per month |
| Pro | $19.99 | per year |


### CZI Sound

[App page](https://appshunter.io/ios/app/czi-sound/id6446013579)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is To Do List free?

To Do List is free to download, with in-app purchases available.

### Is CZI Sound free?

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

### Do To Do List or CZI Sound have ads?

Neither To Do List nor CZI Sound shows ads.

### Which is updated more often, To Do List or CZI Sound?

To Do List ships an update every 3 weeks, and CZI Sound every 8 months. Most recently, To Do List was updated on September 6, 2026 and CZI Sound on September 18, 2026.

---

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