# 天天数独 vs BrainBay

The clearest difference is in-app purchases: BrainBay at none against 天天数独's 1. BrainBay also leads on update cadence (every 3 weeks vs every 2 months). 天天数独's advantage is iOS requirement (9.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. 天天数独 sells 1 one-off in-app purchase. BrainBay asks for nothing beyond the download.

天天数独 ships an update every 2 months, BrainBay every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 天天数独 | BrainBay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brainbay-brain-training/id6743699439/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 9 MB | 15 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [苗 何](https://appshunter.io/developer/1539679871) | [Silverdragon Tech PTE. LTD](https://appshunter.io/developer/1635915308) |

## What reviewers say

### 天天数独

[App page](https://appshunter.io/ios/app/id1545369837)

This app offers a classic Sudoku puzzle experience designed to train logical reasoning and deductive skills. Players fill a 9x9 grid with numbers 1-9, ensuring each row, column, and 3x3 subgrid contains unique digits. It's suitable for all ages seeking a mentally stimulating challenge.

**Highlights:** Classic Sudoku puzzles, Logical reasoning training, Deductive skill development, Suitable for all ages, 9x9 grid challenges, Unique number placement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告 | $2.99 | one-time |


### BrainBay

[App page](https://appshunter.io/ios/app/brainbay-brain-training/id6743699439)

A collection of classic brain-training puzzle games designed for quick play sessions. Enjoy Sudoku, 2048, memory matching, and 24-point challenges with a minimalist interface. More games are planned for future updates.

**Highlights:** Sudoku puzzles, 2048 number game, Memory matching, 24-point calculation, Minimalist interface, Multiple puzzle types

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 天天数独 free?

天天数独 is free to download, with in-app purchases available.

### Is BrainBay free?

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

### Do 天天数独 or BrainBay have ads?

Neither 天天数独 nor BrainBay shows ads.

### Which is updated more often, 天天数独 or BrainBay?

天天数独 ships an update every 2 months, and BrainBay every 3 weeks. Most recently, 天天数独 was updated on November 3, 2026 and BrainBay on November 4, 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.*