# 321 ToDo vs ToDoBuff ~ToDo×Scheduling

The clearest difference is in-app purchases: 321 ToDo at none against ToDoBuff ~ToDo×Scheduling's 1. 321 ToDo also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (9.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. ToDoBuff ~ToDo×Scheduling sells 1 one-off in-app purchase. 321 ToDo asks for nothing beyond the download.

321 ToDo ships an update every 3 days, ToDoBuff ~ToDo×Scheduling every 3 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 321 ToDo | ToDoBuff ~ToDo×Scheduling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/321-todo-countdown-todo/id1542891687/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 64 MB | 14 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shibapp LLC](https://appshunter.io/developer/852300851) | [Taito Iikura](https://appshunter.io/developer/1506013840) |

## What reviewers say

### 321 ToDo

[App page](https://appshunter.io/ios/app/321-todo-countdown-todo/id1542891687)

Organize your tasks with a countdown to their due dates. This app helps you manage your to-do list with real-time grace period displays and customizable reminders. Features include swipe-to-delete, sorting options, and repeat task settings.

**Highlights:** Countdown to due dates, Swipe to delete tasks, Manual and automatic sorting, Customizable reminders, Repeat task function, Theme color customization, Badge display for incomplete tasks

**Features:** macOS Compatibility

**In-app purchases:** none


### ToDoBuff ~ToDo×Scheduling

[App page](https://appshunter.io/ios/app/todobuff-todoscheduling/id6740168317)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Removal | $14.99 | one-time |


## Frequently asked questions

### Is 321 ToDo free?

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

### Is ToDoBuff ~ToDo×Scheduling free?

ToDoBuff ~ToDo×Scheduling is free to download, with in-app purchases available.

### Do 321 ToDo or ToDoBuff ~ToDo×Scheduling have ads?

Both 321 ToDo and ToDoBuff ~ToDo×Scheduling show ads.

### Which is updated more often, 321 ToDo or ToDoBuff ~ToDo×Scheduling?

321 ToDo ships an update every 3 days, and ToDoBuff ~ToDo×Scheduling every 3 weeks. Most recently, 321 ToDo was updated on October 24, 2026 and ToDoBuff ~ToDo×Scheduling on October 30, 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.*