# Just Do it vs 3by4

The clearest difference is in-app purchases: Just Do it at none against 3by4's 3. Just Do it also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 3by4 sells 3 in-app purchases, starting at $6.99 per 7 days. Just Do it asks for nothing beyond the download.

Just Do it ships an update every 3 weeks, 3by4 every 3 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Just Do it | 3by4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/3by4-goal-and-task-planner/id6756412554/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 110 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [剑平 沈](https://appshunter.io/developer/697786414) | [Karimulla Mohammed](https://appshunter.io/developer/1860038673) |

## What reviewers say

### Just Do it

[App page](https://appshunter.io/ios/app/just-do-it/id697786411)

**In-app purchases:** none


### 3by4

[App page](https://appshunter.io/ios/app/3by4-goal-and-task-planner/id6756412554)

This app helps you break down large goals into actionable daily, weekly, monthly, and yearly plans. A virtual assistant guides you through habit formation and task management, offering friendly reminders and progress tracking.

**Highlights:** Goal breakdown into actionable plans, Habit tracking with reminders, Daily task management, Focus timer, Home screen widgets, AI-powered planning assistance

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3by4 Premium Weekly | $6.99 | per 7 days |
| 3by4 Premium Monthly | $12.99 | per month |
| 3by4 Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is Just Do it free?

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

### Is 3by4 free?

3by4 is free to download, with in-app purchases available.

### Do Just Do it or 3by4 have ads?

3by4 shows ads; Just Do it does not.

### Which is updated more often, Just Do it or 3by4?

Just Do it ships an update every 3 weeks, and 3by4 every 3 months. Most recently, Just Do it was updated on November 1, 2026 and 3by4 on October 31, 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.*