Endoku vs Sight Check
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Endoku
A single-player logic puzzle game played on concentric rings. Place numbers so each radial line adds up to the same target, using pure logic to find the single solution. Offers multiple board modes and difficulties, with a daily puzzle feature.
- Concentric ring logic puzzles
- Radial line sum challenges
- Multiple board modes and difficulties
- Daily puzzles with streaks
- Built-in strategy guide
- Calm music and sound effects
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No annoying ads, no data collection. Endoku is a single-player logic puzzle played on concentric rings, where you place numbers so each radial line adds up. Just two rules: • Each ring uses its set of numbers exactly once. • The cells along each radial line must add up to the same target. From these two simple rules, pure logic — never guessing — leads you to the one solution. Every puzzle is generated to be solvable by logic alone. Fresh for anyone who bounced off Sudoku, and meaty enough for anyone a little bored of it. Features: • Four board modes: Intro (2 rings) / Basic (3) / Advanced (4) / Expert (5) • Three difficulties (Easy / Medium / Hard) • Pencil marks (candidate notes) to work through the tougher boards • A fresh Daily puzzle with a calendar and streaks • A built-in strategy guide • Calm music and satisfying sound effects (each toggleable) • Gentle haptics • A calm, easy-on-the-eyes board • Japanese / English, portrait & landscape Intro and Basic (Easy/Medium) are free. A single one-time purchase unlocks all modes and difficulties, daily puzzles, the strategy guide, and music & sound.
Sight Check
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Sight Check is a fun, casual game inspired by classic eye charts. Can you read the tiny letters from across the room? Challenge yourself with rows of shrinking letters, track your score, and see how sharp your reading really is - no equipment needed beyond your phone. How to play: - Stand back from your screen and read each row aloud - Progress through smaller and smaller letters - Save your results and beat your personal best - Compare with friends and family for a laugh Sight Check is designed purely for entertainment and casual challenge. It is not a medical device, does not diagnose any condition, and is not a substitute for a professional eye exam. If you have concerns about your vision, please consult a qualified eye care professional. Simple, ad-free, and privacy-first - your results stay on your device. Give your eyes a fun challenge today!
Screenshots
Verdict
The clearest difference is in-app purchases: Sight Check at none against Endoku's 1. Sight Check also leads on iOS requirement (14.0 vs 16.0). On price, ads and device support 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
Both are free to download. Endoku sells 1 one-off in-app purchase. Sight Check asks for nothing beyond the download.
| Parameter | Endoku | Sight Check |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 55 MB |
| Age rating | 4+ | 12+ |
| Developer | seiji honda | lapnito.cz s.r.o. |
In-app purchases
Endoku
- Unlock EverythingFree
Sight Check
No in-app purchases









