# BiDoku vs Twilight Grids

The clearest difference is ads: BiDoku at none against Twilight Grids's shown. Twilight Grids's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. BiDoku sells 1 one-off in-app purchase and Twilight Grids sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

BiDoku ships an update every 2 days, Twilight Grids daily. Both last shipped on October 31, 2026.

## The numbers

| Metric | BiDoku | Twilight Grids |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bidoku/id6759069902/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 89 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Job Sierkstra](https://appshunter.io/developer/1674438160) | [VectorWeave](https://appshunter.io/developer/1894677144) |

## What reviewers say

### BiDoku

[App page](https://appshunter.io/ios/app/bidoku/id6759069902)

This logic puzzle game challenges you to fill a grid with 0s and 1s. Convert binary numbers to decimal and match row/column targets using pure logic. It offers a fresh twist on number puzzles for those who enjoy brain teasers.

**Highlights:** Binary number puzzles, Grid deduction gameplay, Multiple difficulty levels, Helper modes, Smart hint system, Best time tracking, Hard mode with grouped targets

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BiDoku Premium | $1.99 | one-time |


### Twilight Grids

[App page](https://appshunter.io/ios/app/twilight-grids-logic-puzzles/id6762560297)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Infinity Package | $9.99 | one-time |


## Frequently asked questions

### Is BiDoku free?

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

### Is Twilight Grids free?

Twilight Grids is free to download, with in-app purchases available.

### Do BiDoku or Twilight Grids have ads?

Twilight Grids shows ads; BiDoku does not.

### Which is updated more often, BiDoku or Twilight Grids?

BiDoku ships an update every 2 days, and Twilight Grids daily. Most recently, BiDoku was updated on October 31, 2026 and Twilight Grids on October 31, 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.*