# River IQ: River Crossing — Classic Logic & Brain Puzzles

> Classic Logic & Brain Puzzles (iPhone/iPad app by THANG TRUONG NGOC.)

- Source: https://appshunter.io/ios/app/river-iq-river-crossing/id6823205074 (this page in markdown: same URL + `.md`)
- Developer: [THANG TRUONG NGOC](https://appshunter.io/developer/6818040142)
- Category: Games, Education, Board, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 100 MB
- Languages: American English, Danish, French (France), German (Germany), Japanese, Korean, European Spanish, Turkish, Vietnamese
- Released: 2026-10-22
- Data updated: 2026-10-29

## What is River IQ?

Embark on a timeless journey of pure deductive reasoning with River IQ: River Crossing — the definitive collection of 35 classic and algorithmic logic riddles, handcrafted for puzzle aficionados of all ages!

From the centuries-old folklore of the Farmer, Wolf, Sheep & Cabbage to the strategic dilemmas of Three Monks & Three Demons and the torchlit crossing of the Night Bridge, River IQ challenges you to transport passengers across treacherous waters while navigating strict predator-prey constraints, boat capacities, and pilot credentials.

Each puzzle represents an elegant mathematical state-space problem with a provable optimal move sequence (S-min). Will you find the shortest path, or will your passengers be left in peril?

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KEY GAME FEATURES
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• 35 MASTER PUZZLE STAGES
Progress through 6 distinct chapters, starting from familiar classic foundations and advancing toward grandmaster-level algorithmic challenges that test your spatial foresight and planning.

• 5 SPECIALIZED PUZZLE ENGINES
Unlike ordinary riddle apps, River IQ features 5 dedicated logic engines:
1. River Crossing: 2-shore & 3-shore island ferry mechanics with pilot qualifications.
2. Decanting Jugs: Precise liquid volume measuring (8-5-3L & 16-11-6L puzzles).
3. Night Bridge & Hourglass: Time optimization with finite torch fuel and varying speeds.
4. Scale & Cipher: Counterfeit coin balance weighing and dial combinations.
5. Board Grid: Toads & Frogs swap leaps, Ancient Tower Mystery, Knight's Tour, and Peg Solitaire.

• ON-DEVICE BFS AI HINT SOLVER
Never stay stuck! Our built-in Breadth-First Search (BFS) graph algorithm dynamically analyzes your current board position and highlights the exact optimal next move without spoiling the full solution.

• RISK-FREE STEP UNDO & RESTART
Enjoy total creative freedom. The complete Command Pattern history stack allows you to rewind moves step-by-step or restart the level instantly to test fresh hypotheses.

• 10 LOCALIZED LANGUAGES
Seamlessly switch between English, Vietnamese (Tiếng Việt), Spanish (Castilian & Latin American), French, German, Danish, Korean, Japanese, and Turkish with a single tap.

• ASMR SOUNDS & RETINA GRAPHICS
Immerse yourself in gentle river ripples, wooden rowing paddle strokes, and ambient nature soundscapes paired with crisp, clean vector artwork tailored for iPhone and iPad displays.

• 100% OFFLINE & PRIVACY-FIRST
Zero third-party advertisements, zero microtransactions, and zero tracking SDKs. River IQ is fully self-contained and completely playable offline — ideal for flights, commutes, and focused family mental exercises.

Download River IQ today and put your logical deduction to the ultimate test!

## Is River IQ safe?

Not enough ratings yet to assess River IQ.

## Is River IQ legit?

River IQ: River Crossing has limited verification signals. The AppsHunter Legitimacy Score for River IQ is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.1.1 — 2026-10-26

Version 1.1.1 (Build 14) Update:
• Prominent Character Visuals: Enlarged, crisp 3D Pixar-style character cards with gentle breathing animations for 4-character stages (Levels 1, 3, 20) on iPhone and iPad.
• Optimal Move Counts Audit: Verified and calibrated the exact mathematical minimum moves across all 35 levels with zero surplus moves.
• iPad Splash Screen Polish: Seamless edge-to-edge startup splash screen on all iPad models with zero color flashes.
• Dramatic Wolf Unmasking (Level 8): Added expressive disguised wolf avatar and dynamic reveal effects.
• Progressive Level Unlock: Levels 1–5 available immediately; unlock Levels 6–35 as you master each puzzle!
• Performance & Stability: Instant startup, 100% offline gameplay, and zero ads for an immersive brain training experience.

### 1.1 — 2026-10-24

Major Version 1.1 Update:
• Full support for 10 languages: English, Vietnamese, French, German, Spanish (Castilian & Mexico), Japanese, Korean, Turkish, and Danish.
• Upgraded tactile 3D button design with responsive mechanical feedback.
• New high-definition pair badges (Diamond, Heart, Star, Clover) for crystal-clear identification on shore and on the boat.
• Enhanced Victory and Rule Conflict modal dialogs with improved contrast.
• Polished animations and performance improvements across iPhone and iPad.

### 1.0 — 2026-10-22

No release notes.

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## More apps by THANG TRUONG NGOC

- [Carom GO: 3-Cushion & Libre](https://appshunter.io/ios/app/carom-go-3-cushion-and-libre/id6818040140)

All apps by THANG TRUONG NGOC: https://appshunter.io/developer/6818040142

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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 2026-10-29.*