Molekula vs Sudoku Sagax
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Molekula
A minimalist and relaxing puzzle game designed for quiet moments. Players interact with molecules in a calm environment without pressure or time limits. It's a hypnotic experience for those seeking a peaceful break.
- Minimalist design
- Relaxing gameplay
- Hypnotic puzzles
- No time pressure
- Molecule interaction
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« Boring » — My daughter « Yes, it’s pretty. Can you walk the dog? » — My wife « Hmm… I’m not sure I’ll understand it » — My mother So I walked Floc. And in the park, I found people willing to try my prototype. They played, replayed… and convinced me to keep building this game. Here is Molekula: a minimalist, relaxing, hypnotic puzzle. A game that doesn’t rush you, doesn’t stress you, doesn’t demand anything. Just you, a few molecules, and a quiet moment to breathe.
Sudoku Sagax
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Sudoku Sagax is Sudoku with real progression: solve levels, collect points and stars, climb through 19 fox ranks and take on everyone else in the daily challenge. Nona the vixen shows you around and explains every new puzzle type in half a minute. ELEVEN PUZZLE TYPES • Sudoku in four difficulties, from Easy to Extreme • Killer Sudoku, Kakuro, Nonogram, Crowns, Binary puzzle • X-Sudoku, Jigsaw Sudoku, Mini 6x6 and the big 16x16 • Foxhold: Sudoku as tower defence, our very own game Every type has its own levels, its own best times and its own leaderboard. DIFFICULTY BY TECHNIQUE In classic Sudoku, difficulty follows the techniques a puzzle calls for, not the number of givens: Easy needs singles, Extreme asks for X-Wing and XY-Wing. In the game you see which technique is needed, and after a win, what you solved it with. Every level of every puzzle type can be solved without guessing, with logic alone. DAILY CHALLENGE AND STREAKS One puzzle a day, the same for everyone, with its own daily leaderboard. Solve on consecutive days and your streak grows. Streak shields cover a missed day, so a busy calendar does not undo weeks of work. RANKS, STARS, ACHIEVEMENTS Every solved level counts towards your rank: 19 tiers from Fox Cub to Sagax Immortalis, each with its own fox portrait as a profile picture. Add up to three stars per level and 39 achievements. DUELS AGAINST FRIENDS After a win, challenge someone with a link: they play exactly the same puzzle against your time. No account needed on their side. THOUGHT THROUGH IN DETAIL • A tip that shows you the next technique instead of giving away the digit, plus notes, eraser and undo • Mistakes shown instantly or only at the end, your choice • Digit-first mode for fast entry • Light and dark themes, in ten languages • Puzzles are generated locally, so a dead spot will not stop you You can start playing without an account. With a free account (sign in with Google or Apple), your progress, streak and leaderboard position follow you across devices, including between app and browser. Sudoku Sagax is free, with no ads and no in-app purchases. The den is open. How far will you get?
Screenshots
Verdict
The clearest difference is in-app purchases: Sudoku Sagax at none against Molekula's 1. Sudoku Sagax also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price 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. Molekula sells 1 one-off in-app purchase. Sudoku Sagax asks for nothing beyond the download.
Molekula ships an update every 2 weeks, Sudoku Sagax every 2 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | Molekula | Sudoku Sagax |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 17 MB |
| Age rating | 4+ | 12+ |
| Developer | Stéphan Barbé | Vulpes Sagax UG (haftungsbeschränkt) |
In-app purchases
Molekula
- Remove Ads$3.99
Sudoku Sagax
No in-app purchases









