# To do Block vs SlotFlow

The clearest difference is iOS requirement: To do Block at 17.0 against SlotFlow's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. To do Block sells 6 in-app purchases, starting at $1.99 per month and SlotFlow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

To do Block ships an update every 3 days, SlotFlow every 2 days. The most recent releases landed on October 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | To do Block | SlotFlow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 96.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 5 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Sanghoon Im](https://appshunter.io/developer/1775904385) | [Yuta Awamura](https://appshunter.io/developer/1886063847) |

## What reviewers say

### To do Block

[App page](https://appshunter.io/ios/app/to-do-block-simple-to-do-list/id6752740243)

This app helps you focus by blocking distracting apps and websites until you complete your daily tasks. It automatically re-blocks them each morning and offers a temporary unlock feature for necessary breaks. Manage your to-dos with customizable groups, recurring tasks, and deadlines.

**Highlights:** App and website blocking, Automatic daily re-blocking, Temporary unlock for breaks, Task organization with groups, Recurring tasks, Deadline setting, Weekly/monthly calendar view, Offline functionality

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 두두 1개월 프로 플랜 | $1.99 | per month |
| 두두 1년 프로 플랜 | $14.99 | per year |
| To-do Block Pro 2 | $14.99 | per year |
| To-do Block (Pro Max) | $14.99 | one-time |
| Todo Block Pro Max 2 | $14.99 | one-time |
| Todo Block Pro Max 3 | $19.99 | one-time |


### SlotFlow

[App page](https://appshunter.io/ios/app/slotflow-multi-section-timer/id6764731372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SlotFlow Pro | $1.99 | one-time |


## Frequently asked questions

### Is To do Block free?

To do Block is free to download, with in-app purchases available.

### Is SlotFlow free?

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

### Do To do Block or SlotFlow have ads?

Both To do Block and SlotFlow show ads.

### Which is updated more often, To do Block or SlotFlow?

To do Block ships an update every 3 days, and SlotFlow every 2 days. Most recently, To do Block was updated on October 18, 2026 and SlotFlow on September 23, 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.*