# Duorva: Logic Puzzle Game — Brain Teaser & Mind Training

> Brain Teaser & Mind Training (iPhone/iPad app by Mahmut Omer Batrk.)

- Source: https://appshunter.io/ios/app/duorva-logic-puzzle-game/id6822070582 (this page in markdown: same URL + `.md`)
- Developer: [Mahmut Omer Batrk](https://appshunter.io/developer/1820503364)
- Category: Games, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 50 MB
- Languages: American English
- Released: 2026-11-02
- Data updated: 2026-11-05

## What is Duorva?

Duorva is a logic puzzle where you balance Fire and Water, Earth and Wind. The rules take seconds to learn, yet every level asks you to think one step further. If you enjoy sudoku, takuzu and other brain teasers, Duorva is made for you.

HOW TO PLAY

• Every row and column holds an equal number of both elements.
• No more than two of the same element can sit next to each other, horizontally or vertically.
• Cells joined by = must match; cells joined by × must differ.
• Tap a cell: Empty → first element → second element → Empty.

Every puzzle has exactly one solution and can be solved by logic alone, with no guessing.

WHAT'S INSIDE

• Two worlds: Fire & Water and Earth & Wind. Earth & Wind adds new rules such as the Earth Layer and the Wind Vortex.
• Campaign: 25 handcrafted levels in each world, carefully ordered from easy to hard.
• Daily Puzzle: a new puzzle every day; keep your daily streak going.
• Unlimited: Easy, Normal and Hard puzzles on 4×4, 6×6 and 8×8 boards that never run out.
• Smart hints: a hint does not just give the answer, it shows step by step why a cell must be Fire or Water.
• Balance Crystals: earn crystals by finishing levels and the Daily Puzzle, then spend them on hints.
• Interactive tutorial: learn the rules by playing.
• Undo, redo, erase and pause; your progress is saved automatically.
• Play offline, no internet connection needed.
• Available in English and Turkish.

WHO IS IT FOR?

Anyone who loves logic games, brain teasers and mind training; fans of sudoku, takuzu and binary puzzles; and anyone looking for a calm few minutes of focus each day.

ADS

Duorva is free to play and contains ads. You can choose to watch a rewarded ad to earn Balance Crystals, and an ad may occasionally appear between levels.

SUPPORT

Email: duorva.support@gmail.com

## Is Duorva safe?

Not enough ratings yet to assess Duorva.

## Is Duorva legit?

Duorva: Logic Puzzle Game has limited verification signals. The AppsHunter Legitimacy Score for Duorva is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-11-02

No release notes.

## More apps by Mahmut Omer Batrk

- [Neyzence: Ney Öğren, Ney Dinle](https://appshunter.io/ios/app/neyzence-ney-ogren-ney-dinle/id6747272173)
- [Cografium: Geography Revision](https://appshunter.io/ios/app/cografium-geography-revision/id6766243119)

All apps by Mahmut Omer Batrk: https://appshunter.io/developer/1820503364

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-05.*