# Hierarchical To vs Senryu Note

The clearest difference is iOS requirement: Hierarchical To at 12.0 against Senryu Note's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Hierarchical To sells 1 one-off in-app purchase and Senryu Note sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Hierarchical To | Senryu Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hierarchical-to-do-list/id1577074645/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 8 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuuki Shimizu](https://appshunter.io/developer/1533588016) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### Hierarchical To

[App page](https://appshunter.io/ios/app/hierarchical-to-do-list/id1577074645)

Organize complex projects with infinitely layered tasks. View all parent, child, and grandchild tasks at a glance without multiple taps. Collapse or expand task branches for clarity and utilize repeat functions for recurring to-dos.

**Highlights:** Infinite task layering, Collapse/expand task branches, View all task levels at once, Today's To-do List, Task repeat function, Task move and copy, Completion history

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.99 | one-time |


### Senryu Note

[App page](https://appshunter.io/ios/app/senryu-note/id1619329524)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


## Frequently asked questions

### Is Hierarchical To free?

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

### Is Senryu Note free?

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

### Do Hierarchical To or Senryu Note have ads?

Both Hierarchical To and Senryu Note show ads.

### Which is updated more often, Hierarchical To or Senryu Note?

Hierarchical To ships an update every 2 months, and Senryu Note every 2 months. Most recently, Hierarchical To was updated on October 6, 2026 and Senryu Note on October 11, 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.*