Sudoku ▦ review

Player-review analysis, not a playtest. Sources: the US App Store listing and 50 US reviews dated 2025-10-08–2026-11-09 (Asia/Shanghai), covering versions 2.12.00–2.19.02. This limited, self-selected sample is not representative; player reports are not independently verified.

Sudoku ▦ by Tripledot centers on the familiar row, column, and block deduction grid. Its notable listing promise is control over assistance: automatic checking and mistake limits are described as optional.

Customize the guardrails

The developer names Easy, Medium, Hard, and Expert, with duplicate highlighting, notes that update automatically, hints, an eraser, and unlimited undo.

A limited-mistake challenge is offered alongside unlimited mistakes. The text mentions three, while the official image displays 0/5; neither should become a fixed universal allowance.

That image also shows the number keypad and notes control. It supports a conventional digit-entry interface without demonstrating the quality or teaching depth of a hint.

Better support can mean less support

A detailed September reviewer wants matching pencil notes highlighted and more choice within Expert. Those are specific interface requests, not evidence that notes or Expert mode are entirely absent.

Another reviewer likes the app but wants wrong-number vibration disabled because it reveals too much. That concern is especially relevant to solvers who want to discover errors through deduction rather than immediate correction.

The listing’s optional auto-check does not independently resolve that separate haptic complaint. No Settings session was conducted to establish the available switches.

Advertising can break the reasoning chain

Multiple reviewers report full-screen ads during a puzzle. One explicitly says they lose their place, while another describes browser openings before they can sustain play.

These reports affect concentration in a constraint puzzle, not merely waiting between games. Claimed intervals vary and are not a measured schedule.

A November reviewer reports a black screen when an ad loads. Another describes misleading-looking upgrade advertising and suspicious device activity. The latter is not independently established malware, tracking causation, or a verified requirement to install another app.

Free access has an unresolved removal route

The US download is free. Several reviewers want a paid ad-free edition and say they cannot find one, but present availability and pricing were not independently checked.

One positive account still finds the puzzle quick and challenging. A negative reviewer explicitly never used the app after reading other comments; that entry is not a firsthand technical test.

Autosave and appearance skins are advertised, while offline play and present stability remain unverified. Consider this Sudoku if configurable checking and classic grid solving are priorities, but do not assume the commercial layer stays outside a difficult deduction.

Verdict

Tripledot Sudoku has a useful advertised distinction in optional guardrails. The sample’s strongest concern is interruption during reasoning, with feedback preferences and expert-selection requests adding more detail than a generic ad complaint.

FAQ

Is the mistake limit mandatory?

The listing says it is optional and also permits unlimited mistakes.

Are note highlighting and digit highlighting identical?

Not according to one reviewer requesting same-number note highlighting; the current interface was not tested.

Is another app required to upgrade?

No such requirement is established. A reviewer describes an advertisement directing them elsewhere, not a verified update process.

US App Store listing.