Dark Sudoku vs Rayvin
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Dark Sudoku
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Dark Sudoku is a fresh take on the classic and beloved Sudoku Game. Dark backgrounds and vibrant colors that both look good and are easy on the eyes make Dark Sudoku a welcoming opportunity for all Sudoku lovers that got tired of white newspaper looking Sudoku Games. Dark Sudoku comes with 5 different difficulty levels. Just pick the right challenge for your skills. The game comes with a leaderboard that lists all your successes, nicely ordered by difficulty level. Best-in-class comfort features as note taking and highlighting numbers on the field are complemented by a secure system to track your current game progress so that you can always continue where you have stopped.
Rayvin
A gothic tarot match-3 puzzle game where players draw lines to connect matching cards. Uncover an occult mystery across fifty-five levels, interact with living portraits of antagonists, and overcome unique hazards. Purchase the game once for an ad-free, privacy-focused experience.
- Line-drawing match-3 gameplay
- 55 levels across 5 chapters
- Interactive antagonist portraits
- Unique puzzle hazards
- Relics and daily rewards
- Automatic board rearrangement
- Offline play and privacy focus
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Blackwood Manor has been waiting for you. Rayvin is a gothic tarot match-3 built around a single, satisfying gesture: you don't swap tiles — you draw. Trace one continuous line through three or more matching arcana in any direction, including diagonals, and watch the cards dissolve into mist. FIFTY-FIVE LEVELS, FIVE CHAPTERS An occult mystery in five acts, told across fifty-five hand-tuned levels. Earn your way deeper into the manor one chapter at a time, breaking the wax seals as you go. LIVING PORTRAITS Five antagonists guard the manor's secrets. Tap a character's medallion and their oil portrait unrolls — and speaks to you. Lady Evelyn Blackwood. Malakar. Mademoiselle Vespera. Father Lucien. Arch-Sorceress Morvath. HAZARDS WORTH THE CANDLE Shatter iron chains. Cleanse shadow corruption before it spreads. Break stone gargoyles that refuse to be matched. Every hazard you clear pays you in both score and progress. RELICS AND RITUALS Spend Arcana Essence in the Reliquary on the Bone Hammer, the Phantasmal Scythe, and the Tarot Shuffle. Draw from the daily altar for a card and a reward, and keep your streak alive. NEVER STUCK If a board ever runs out of legal moves, the arcana rearrange themselves — free, costing you neither a move nor a relic, with everything you've already cleared left intact. PAY ONCE. THAT'S ALL. No advertisements. No in-app purchases. No energy timers. No accounts to create, no email to hand over, and nothing asked of you a second time. GENUINELY PRIVATE Rayvin collects nothing. There is no analytics, no tracking, no third-party code, and no server — the app makes no network requests at all. Your progress lives on your iPhone and nowhere else. It plays perfectly on Airplane Mode. Light a candle. The cards are waiting.
Screenshots
Verdict
The clearest difference is price: Dark Sudoku at Free against Rayvin's $1.99. Rayvin's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Dark Sudoku is free to download; Rayvin costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Dark Sudoku | Rayvin |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 9 days | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 69 MB | 24 MB |
| Age rating | 4+ | 9+ |
| Developer | Blue Valley Games UG (haftungsbeschränkt) | Daryld Lantz |
In-app purchases
Dark Sudoku
No in-app purchases
Rayvin
No in-app purchases









