# Zero by Otto vs Ember

The clearest difference is in-app purchases: Zero by Otto at none against Ember's 1. Ember's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ember sells 1 in-app purchase, starting at $4.99 per month. Zero by Otto asks for nothing beyond the download.

Zero by Otto ships an update every 5 days, Ember every 2 days. The most recent releases landed on June 3, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Zero by Otto | Ember |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 13 MB | 42 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ludus-Language, Inc.](https://appshunter.io/developer/1818287014) | [ori kahalon](https://appshunter.io/developer/1877122574) |

## 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


### Ember

[App page](https://appshunter.io/ios/app/ember-habit-and-task-tracker/id6759167417)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ember Pro | $4.99 | per month |


## Frequently asked questions

### Is Zero by Otto free?

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

### Is Ember free?

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

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

Neither Zero by Otto nor Ember shows ads.

### Which is updated more often, Zero by Otto or Ember?

Zero by Otto ships an update every 5 days, and Ember every 2 days. Most recently, Zero by Otto was updated on June 3, 2026 and Ember on September 8, 2026.

---

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