Comparison

CrimeKey vs Digital Sudoku ⊞

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

Head to head
About

CrimeKey

Engage in a detective puzzle game where you solve murder cases by carefully observing clues, deducing connections between suspects, weapons, and locations. This logic-based experience offers a calm, reasoning-focused challenge without timers or action.

Highlights
  • Solve murder cases
  • Observe clues and evidence
  • Deduce suspect, weapon, and location
  • Use a deduction board
  • Logic-based puzzles
  • No timers or action
Features
Read full description

CrimeKey: Murder Logic is a detective puzzle game about solving murder cases through observation, clues and deduction. Each case gives you a small mystery: three suspects, three possible weapons and three places where the crime may have happened. Your job is to read the evidence carefully, compare the details and work out the only combination that truly fits. There are no timers, no action sequences and no guessing. CrimeKey is a calm logic game where every mark on the grid brings you closer to the truth. Use the deduction board to organize your investigation. Cross out options that cannot be true, confirm the ones that make sense, and connect suspects, weapons and locations step by step. A stain, a smell, a trace of dust or a small contradiction may be the detail that opens the whole case. Every mystery is designed to be solved by reasoning. Some clues seem simple at first, but only reveal their meaning when combined with others. The solution is always there; you just have to follow the evidence. CrimeKey is ideal for players who enjoy classic detective stories, murder mystery games, logic puzzles and quiet challenges that reward attention. Open the case. Study the clues. Find the key to the crime.

About

Digital Sudoku ⊞

This game presents Sudoku puzzles where clues are given as partial seven-segment digital displays. Decode the patterns to reveal the digits and solve classic Sudoku logic. It offers multiple board sizes, difficulty levels, and daily challenges.

Highlights
  • Seven-segment display clues
  • Multiple board sizes (4x4, 6x6, 9x9)
  • Various difficulty levels
  • Daily puzzles and streaks
  • Hint system for logical steps
  • Achievements and leaderboards
  • Light and dark themes
Features
Read full description

Digital Sudoku is a Sudoku variant with a twist: every clue isn't a printed number, it's a partial seven-segment display, the kind you'd see on an old calculator or digital clock. Some segments are lit, some aren't — read the pattern, decode the digit, and place it. Once you're solving, it's classic Sudoku logic all the way down. FEATURES • Three board sizes — 4×4, 6×6, and full 9×9 — each with Easy, Medium, and Hard difficulties (9×9 adds Expert). • A new Daily puzzle every day, with its own streak to keep going. • Stuck? Hint walks you through the next logical step instead of just filling in the answer — you still have to place it yourself. • Undo/redo, a mistake-checking readout, and an optional timer you can show or hide. • Achievements and stats track your solves, streaks, and best times per board and difficulty. • Compare your times on a real per-puzzle leaderboard. • Light and dark themes, both designed around the seven-segment look. • Play instantly as a guest — no account or sign-up required. Whether you're decoding your first 4×4 or chasing an Expert 9×9 streak, Digital Sudoku turns a familiar puzzle into something you have to look twice at.

Screenshots

CrimeKey4 screens
Digital Sudoku ⊞4 screens

Verdict

The call

CrimeKey and Digital Sudoku ⊞ are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for CrimeKey against 5.0 for Digital Sudoku ⊞. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

CrimeKey ships an update every 5 days, Digital Sudoku ⊞ every 8 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

ScorecardNo meaningful differences
CrimeKey versus Digital Sudoku ⊞: the parameters behind the verdict, then further details
ParameterCrimeKeyDigital Sudoku ⊞
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 5 days — betterEvery 8 days
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size54 MB40 MB
Age rating9+4+
DeveloperEventronic Systems, SLCorey Wu

In-app purchases

None

CrimeKey

No in-app purchases

None

Digital Sudoku ⊞

No in-app purchases

Questions

Is CrimeKey free?
CrimeKey is free to download, with no in-app purchases.
Is Digital Sudoku ⊞ free?
Digital Sudoku ⊞ is free to download, with no in-app purchases.
Which has better reviews, CrimeKey or Digital Sudoku ⊞?
CrimeKey and Digital Sudoku ⊞ are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do CrimeKey or Digital Sudoku ⊞ have ads?
Both CrimeKey and Digital Sudoku ⊞ show ads.
Which is updated more often, CrimeKey or Digital Sudoku ⊞?
CrimeKey ships an update every 5 days, and Digital Sudoku ⊞ every 8 days. Most recently, CrimeKey was updated on October 31, 2026 and Digital Sudoku ⊞ on November 10, 2026.

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