# PlaySudoku.io vs Trio Math

The clearest difference is in-app purchases: PlaySudoku.io at none against Trio Math's 2. Trio Math's advantage is update cadence (every 4 days vs monthly) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Trio Math sells 2 one-off in-app purchases. PlaySudoku.io asks for nothing beyond the download.

PlaySudoku.io ships an update monthly, Trio Math every 4 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PlaySudoku.io | Trio Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/playsudokuio/id6738934774/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 123 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alfredo Perry](https://appshunter.io/developer/1782998664) | [CHRISTIAN KNOLL](https://appshunter.io/developer/1796167358) |

## What reviewers say

### PlaySudoku.io

[App page](https://appshunter.io/ios/app/playsudokuio/id6738934774)

Engage your mind with a classic Sudoku experience featuring customizable interfaces and multiple difficulty levels. This game offers auto-save and candidate number support for strategic play, perfect for daily mental exercise or quick gaming sessions.

**Highlights:** Three difficulty levels, Auto-save functionality, Candidate number support, Customizable interface, Intuitive controls, Built-in timer, Offline play

**Features:** macOS Compatibility

**In-app purchases:** none


### Trio Math

[App page](https://appshunter.io/ios/app/trio-math/id6741913788)

Sharpen your mental math skills by finding number combinations that equal a target number. Each combination must use one multiplication and one addition or subtraction. Compete globally and enjoy a privacy-friendly, ad-free experience.

**Highlights:** Number grid puzzles, Multiplication and addition/subtraction required, Daily Challenge Mode, Global Leaderboard, Jokers for hints, Ad-free and privacy-friendly

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MinusTrio - Espresso | $1.99 | one-time |
| MinusTrio - Cappuccino | $2.99 | one-time |


## Frequently asked questions

### Is PlaySudoku.io free?

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

### Is Trio Math free?

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

### Do PlaySudoku.io or Trio Math have ads?

Neither PlaySudoku.io nor Trio Math shows ads.

### Which is updated more often, PlaySudoku.io or Trio Math?

PlaySudoku.io ships an update monthly, and Trio Math every 4 days. Most recently, PlaySudoku.io was updated on October 6, 2026 and Trio Math on October 7, 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.*