# OnceOne - Grouping To-Do tasks — Smart filter & grouping tasks.

> Smart filter & grouping tasks. (iPhone/iPad app by Dongliang Yin.)

- Source: https://appshunter.io/ios/app/onceone-grouping-to-do-tasks/id6744550176 (this page in markdown: same URL + `.md`)
- Developer: [Dongliang Yin](https://appshunter.io/developer/1030365061)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 3 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2025-07-03
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/onceone-grouping-to-do-tasks/id6744550176/reviews.md

## What is OnceOne?

With OnceOne, you can manage your to-do tasks offline or on multiple devices through iCloud. We provide a powerful filter function to help you quickly locate the task list that meets specific conditions.

## Core Features

- To-do management
- Custom filter list
- Tomato countdown focus
- Activity records
- Data statistics and chart display

Privacy policy: https://yindongliang.com/docs/App/OnceOne-Privacy-Policy/
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro(Monthly) | $0.99 | per month |
| Pro(Annual) | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro(Lifetime) | $24.99 | one-time |



## Version history (last 5 releases)

### 1.2.1 — 2026-01-29

Bug fix: Fix the bug where the page flickers when selecting filter groups, tags, and projects in the filter editing function.
Other: add iOS18 support back.

### 1.2.0 — 2026-01-19

Add iOS26 support.

### 1.1.1 — 2025-07-17

- The filter list is optimized for performance

### 1.1.0 — 2025-07-10

- iPad compatible now.
- Optimized text descriptions.

### 1.0.1 — 2025-07-07

- Fixed delayed update of sidebar statistics
- Fixed the address of the "Manage Subscription" button
- Optimized text descriptions

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*