# Just Do Three vs Trayzero

The clearest difference is in-app purchases: Just Do Three at none against Trayzero's 4. Trayzero's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Trayzero sells 4 in-app purchases, starting at $0.99 per month. Just Do Three asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Just Do Three against 5.0 for Trayzero. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Just Do Three ships an update every 3 weeks, Trayzero monthly. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Just Do Three | Trayzero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/just-do-three/id6760262038/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/trayzero/id6771756447/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Freemium | Freemium |
| Size | 7 MB | 39 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Todd Vallie](https://appshunter.io/developer/1879327827) | [Feipeng Liu](https://appshunter.io/developer/1891204520) |

## What reviewers say

### Just Do Three

[App page](https://appshunter.io/ios/app/just-do-three/id6760262038)

Focus on what truly matters by selecting three key priorities for the day. Once these are completed, the day is considered a success. This app offers a simple, clear, and achievable approach to productivity without overwhelming task management features.

**Highlights:** Select three daily priorities, Focus on task completion, Track progress and build momentum, Schedule tasks up to a week ahead, Import tasks from a file, Productivity analytics, Recurring tasks

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

**In-app purchases:** none


### Trayzero

[App page](https://appshunter.io/ios/app/trayzero/id6771756447)

This app implements David Allen's Getting Things Done (GTD) methodology for task management. It offers a streamlined inbox, clarification flow, and organization into canonical GTD lists. Features include reminders, voice capture, and on-device data storage for enhanced privacy.

**Highlights:** GTD inbox and capture, Clarify flow for processing tasks, Organize into GTD lists, Weekly Review wizard, Engage tab by context/energy/time, On-device data storage, Voice and photo capture

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Supporter (Monthly) | $0.99 | per month |
| Supporter (Yearly) | $7.99 | per year |
| Small Tip | $1.99 | one-time |
| Large Tip | $9.99 | one-time |


## Frequently asked questions

### Is Just Do Three free?

Just Do Three is free to download, with no in-app purchases.

### Is Trayzero free?

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

### Which has better reviews, Just Do Three or Trayzero?

Just Do Three and Trayzero are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Just Do Three or Trayzero have ads?

Neither Just Do Three nor Trayzero shows ads.

### Which is updated more often, Just Do Three or Trayzero?

Just Do Three ships an update every 3 weeks, and Trayzero monthly. Most recently, Just Do Three was updated on October 5, 2026 and Trayzero on October 24, 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.*