# ToDoStacker vs Study Timer Tracker

The clearest difference is price: ToDoStacker at Free against Study Timer Tracker's $1.99. ToDoStacker also leads on in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

ToDoStacker is free to download; Study Timer Tracker costs $1.99 up front. Study Timer Tracker sells 2 in-app purchases, starting at $0.99 per month. ToDoStacker asks for nothing beyond the download.

## The numbers

| Metric | ToDoStacker | Study Timer Tracker |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 1 MB | 7 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [yaseen khalaf](https://appshunter.io/developer/1723580642) | [Aneesh Pradeep](https://appshunter.io/developer/1836157821) |

## What reviewers say

### ToDoStacker

[App page](https://appshunter.io/ios/app/todostacker-smart-to-do-list/id6743932993)

**Features:** macOS Compatibility

**In-app purchases:** none


### Study Timer Tracker

[App page](https://appshunter.io/ios/app/study-timer-tracker-studius/id6751641628)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Studius Pro Monthly | $0.99 | per month |
| Studius Pro - Annual | $6.99 | per year |


## Frequently asked questions

### Is ToDoStacker free?

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

### Is Study Timer Tracker free?

Study Timer Tracker costs $1.99, and also offers in-app purchases.

### Do ToDoStacker or Study Timer Tracker have ads?

Neither ToDoStacker nor Study Timer Tracker shows ads.

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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.*