Comparison

SudokuNumLogic vs Lullabird

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

SudokuNumLogic

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
Read full description

This is a beautifully designed Sudoku practice application suitable for all users from beginners to advanced players. The application provides three gameplay modes: classic mode, daily challenge, and practice mode, with difficulty levels covering simple, medium, and difficult, meeting the problem-solving needs of different levels. Each game is equipped with practical auxiliary functions such as timers, note markers, undo/redo, candidate number highlighting, and automatic note removal to help you maintain clear thinking during the problem-solving process. The built-in statistics page will record your win rate, consecutive clearance days, and best score, allowing you to intuitively track your progress trajectory. Whether on the commute or during leisure time, simply open the app to start a focused and enjoyable Sudoku challenge.

About

Lullabird

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
Read full description

In an old apartment building, someone is always awake. Up on the roof lives a parrot who has learned every song that drifts through the thin walls. Every night it sings a neighbor's lullaby and puts them to sleep, one flat at a time. It just doesn't have a lullaby of its own. HOW TO PLAY A window lights up when a neighbor is tossing and turning. Tap it, and the song reaches them. That's all there is — nothing to memorize, nothing to count. THE SONG PLAYS ITSELF The lullaby carries on whether you tap or not. Each window lights up just before its note, so the music tells you when to look. THE NIGHT GETS LATE 11 pm, midnight, 1 am… every time the song comes around it gets a little faster, and one more instrument joins in: the left hand, then the cello, then the strings. Last until midnight and the neighbor falls asleep. The parrot always nods off last. YOUR NEIGHBORS Brahmsy in 302, a sparrow who moved in today and can't sleep in a strange room. Pachelbelle in 201, a flamingo who has only ever sung Canon at other people's weddings. Beethowl in 103, an owl who keeps a light on all night while everyone else needs the dark. Each one leaves seeds to thank you, enough to welcome the next neighbor in. • Three classical lullabies, played by a small chamber ensemble • No timers, no ads, no accounts, no sign-in • Plays fine on mute — the lights and the buzz are enough

Screenshots

SudokuNumLogic4 screens
Lullabird4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
SudokuNumLogic versus Lullabird: the parameters behind the verdict, then further details
ParameterSudokuNumLogicLullabird
PriceFreeFree
Rating4.9 (291 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings291 — better—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size53 MB14 MB
Age rating17+4+
DeveloperRyan StrebeckHoonchan Yoon

Customer experience

SudokuNumLogic

All ratings185 ratings
Positive98.9%
Neutral0.5%
Negative0.5%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Lullabird

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SudokuNumLogic

No in-app purchases

None

Lullabird

No in-app purchases

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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