# SyncTasks vs 66 Challenge

The clearest difference is rating: 66 Challenge at 5.0 against SyncTasks's 4.6. 66 Challenge also leads on update cadence (every 5 days vs every 10 days) and iOS requirement (13.0 vs 17.0). SyncTasks's advantage is ratings volume (352 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. SyncTasks sells 5 in-app purchases, starting at $3.99 per month and 66 Challenge sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

66 Challenge holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: SyncTasks has 352 ratings behind it against 5, so its average is the more settled of the two.

SyncTasks ships an update every 10 days, 66 Challenge every 5 days. The most recent releases landed on September 24, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | SyncTasks | 66 Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (352 ratings)](https://appshunter.io/ios/app/synctasks/id6575384261/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/66-challenge/id6758270405/reviews)** |
| Number of ratings | **352** | 5 |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 79 MB | 18 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Toh Kar Le](https://appshunter.io/developer/1688513019) | [Moad Ghajjate El Fal](https://appshunter.io/developer/1871890791) |

## What reviewers say

### SyncTasks

[App page](https://appshunter.io/ios/app/synctasks/id6575384261)

This app offers a streamlined task management experience, syncing with Notion and Apple Reminders. It features a minimalist widget for distraction-free focus and a folder system for organization. It can also be used as a standalone to-do list.

**Highlights:** Two-way Notion sync, Apple Reminders integration, Minimalist home screen widgets, Folder-based task organization, Standalone to-do list mode, No ads or tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SyncTasks Pro (Monthly) | $3.99 | per month |
| SyncTasks Pro (Annually) | $12.99 | per year |
| 7-day Free Trial | Free | one-time |
| SyncTasks Pro | $9.99 | one-time |
| SyncTasks Pro (Lifetime) | $34.99 | one-time |

**What reviewers like**

- 👍 Simple and efficient
- 🚀 Seamless Notion integration
- 💡 Useful widget functionality
- 🔒 Secure and reliable
- 🎨 Clean and minimalist design

**What reviewers complain about**

- 🐛 Syncing issues with Notion and Reminders
- 🔒 Paywall for widget access
- 🤔 Lack of advanced features
- 🔧 Bugs and crashes reported

**Reported bugs**

- Tasks not syncing properly
- Widget not displaying tasks correctly
- App crashing after updates
- Notification issues with repeat tasks

**Requested features**

- Add support for Notion calendar sync
- Improve widget customization options
- Introduce more view and filter options
- Develop a desktop or web app version


### 66 Challenge

[App page](https://appshunter.io/ios/app/66-challenge/id6758270405)

Build lasting habits with a science-backed system designed to guide you through a 66-day journey. Track daily progress, visualize your transformation, and stay motivated with social features and achievements. Transform your life one habit at a time.

**Highlights:** Daily habit tracking, Progress visualization, Streak protection, Social feed and squads, Customizable reminders, Achievement badges

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is SyncTasks free?

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

### Is 66 Challenge free?

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

### Which has better reviews, SyncTasks or 66 Challenge?

66 Challenge is rated higher. SyncTasks averages 4.6 out of 5 from 352 ratings, while 66 Challenge averages 5.0 from 5 ratings.

### Do SyncTasks or 66 Challenge have ads?

Neither SyncTasks nor 66 Challenge shows ads.

### Which is updated more often, SyncTasks or 66 Challenge?

SyncTasks ships an update every 10 days, and 66 Challenge every 5 days. Most recently, SyncTasks was updated on September 24, 2026 and 66 Challenge on September 4, 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.*