# Stack vs Synctodo

The clearest difference is in-app purchases: Synctodo at none against Stack's 2. Stack's advantage is update cadence (every 8 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stack sells 2 in-app purchases, starting at $1.99 per month. Synctodo asks for nothing beyond the download.

Stack ships an update every 8 days, Synctodo monthly. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Stack | Synctodo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Monthly |
| Size | 61 MB | 41 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fadi Zaid](https://appshunter.io/developer/1893682112) | [Ali Alsawad](https://appshunter.io/developer/1895675630) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-tasks-and-reminders/id6762291589)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Yearly Premium | $19.99 | per year |


### Synctodo

[App page](https://appshunter.io/ios/app/synctodo-task-list-and-subtasks/id6764185033)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack free?

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

### Is Synctodo free?

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

### Do Stack or Synctodo have ads?

Neither Stack nor Synctodo shows ads.

### Which is updated more often, Stack or Synctodo?

Stack ships an update every 8 days, and Synctodo monthly. Most recently, Stack was updated on October 31, 2026 and Synctodo on October 28, 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.*