# Zero by Otto vs ProjectX

The clearest difference is in-app purchases: Zero by Otto at none against ProjectX's 3. Zero by Otto also leads on ads (none vs shown). ProjectX's advantage is iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. ProjectX sells 3 in-app purchases, starting at $1.99 per month. Zero by Otto asks for nothing beyond the download.

## The numbers

| Metric | Zero by Otto | ProjectX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zero-by-otto/id6746745586/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | — |
| Monetization | Free | — |
| Size | 13 MB | 33 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ludus-Language, Inc.](https://appshunter.io/developer/1818287014) | [OKAN KAYCI](https://appshunter.io/developer/1807380236) |

## What reviewers say

### Zero by Otto

[App page](https://appshunter.io/ios/app/zero-by-otto/id6746745586)

This task management app offers a minimalist approach to productivity. Unfinished tasks automatically roll over to the next day, ensuring nothing gets lost. Organize tasks into projects, create reusable lists, and collaborate with others.

**Highlights:** Automatic task rollover, Today view, Drag and drop rescheduling, Project organization, Shared projects for collaboration, Reusable checklists, Desktop widget

**In-app purchases:** none


### ProjectX

[App page](https://appshunter.io/ios/app/projectx-manage-all-projects/id6759188799)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for one month. | $1.99 | per month |
| Premium for one year. | $19.99 | per year |
| Premium Unlimited | $29.99 | one-time |


## Frequently asked questions

### Is Zero by Otto free?

Zero by Otto is free to download, with no in-app purchases.

### Is ProjectX free?

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

### Do Zero by Otto or ProjectX have ads?

ProjectX shows ads; Zero by Otto does not.

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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.*