# SudokuNumLogic vs Lullabird

The clearest difference is update cadence: Lullabird at every 3 days against SudokuNumLogic's every 2 weeks. SudokuNumLogic's advantage is iOS requirement (15.6 vs 17.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SudokuNumLogic ships an update every 2 weeks, Lullabird every 3 days. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SudokuNumLogic | Lullabird |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (291 ratings)](https://appshunter.io/ios/app/sudokunumlogic/id6765787017/reviews)** | — |
| Number of ratings | **291** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 53 MB | 14 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Ryan Strebeck](https://appshunter.io/developer/1896074584) | [Hoonchan Yoon](https://appshunter.io/developer/6807282340) |

## What reviewers say

### SudokuNumLogic

[App page](https://appshunter.io/ios/app/sudokunumlogic/id6765787017)

This Sudoku app offers multiple modes and difficulty levels for all skill ranges. It includes helpful tools like timers, notes, and highlighting to aid your gameplay. Track your progress with a built-in statistics page.

**Highlights:** Multiple gameplay modes, Adjustable difficulty levels, Timers and note markers, Undo/redo functionality, Candidate number highlighting, Progress statistics

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

**In-app purchases:** none


### Lullabird

[App page](https://appshunter.io/ios/app/lullabird/id6813956438)

Guide a parrot to sing lullabies to sleeping neighbors in an old apartment building. The song plays itself, with increasing tempo and new instruments as the night progresses. Help each neighbor fall asleep before midnight to advance through the game.

**Highlights:** Rhythm-based gameplay, Progressive difficulty, Unique neighbor characters, Classical lullabies, No timers or ads, Visual and haptic feedback

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

**In-app purchases:** none


## Frequently asked questions

### Is SudokuNumLogic free?

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

### Is Lullabird free?

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

### Do SudokuNumLogic or Lullabird have ads?

Both SudokuNumLogic and Lullabird show ads.

### Which is updated more often, SudokuNumLogic or Lullabird?

SudokuNumLogic ships an update every 2 weeks, and Lullabird every 3 days. Most recently, SudokuNumLogic was updated on October 25, 2026 and Lullabird on October 11, 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.*