# Syn9 vs GroupTodo

The clearest difference is in-app purchases: GroupTodo at none against Syn9's 6. Syn9's advantage is ads (none vs shown) and update cadence (every 2 days vs every 4 days). On price and device support there is nothing between them.

Both are free to download. Syn9 sells 6 in-app purchases, starting at $3.00 per month. GroupTodo asks for nothing beyond the download.

Syn9 ships an update every 2 days, GroupTodo every 4 days. The most recent releases landed on October 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Syn9 | GroupTodo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 57 MB | 12 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tomohiro Sekikawa](https://appshunter.io/developer/1670259539) | [nanawork](https://appshunter.io/developer/534858192) |

## What reviewers say

### Syn9

[App page](https://appshunter.io/ios/app/syn9/id6758545066)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $3.00 | per month |
| Max | $6.99 | per month |
| Plus annual | $29.00 | per year |
| Light size | $1.99 | one-time |
| Regular size | $3.99 | one-time |
| Generous size | $7.99 | one-time |


### GroupTodo

[App page](https://appshunter.io/ios/app/grouptodo-easy-shared-tasks/id6784164534)

**In-app purchases:** none


## Frequently asked questions

### Is Syn9 free?

Syn9 is free to download, with in-app purchases available.

### Is GroupTodo free?

GroupTodo is free to download, with no in-app purchases.

### Do Syn9 or GroupTodo have ads?

GroupTodo shows ads; Syn9 does not.

### Which is updated more often, Syn9 or GroupTodo?

Syn9 ships an update every 2 days, and GroupTodo every 4 days. Most recently, Syn9 was updated on October 18, 2026 and GroupTodo on September 22, 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.*