Comparison

Notation Chess vs QuantumOrb

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Notation Chess

Practice chess visualization and play games using only standard notation, directly from your Apple Watch. This app offers adjustable difficulty and engine settings, with the ability to review moves and peek at the board when needed.

Highlights
  • Play chess on Apple Watch
  • Practice with standard chess notation
  • Adjustable difficulty and engine settings
  • Review move history
  • Peek at the board feature
  • Undo moves
Features
Read full description

Play notation-first chess on the go, directly from your Apple Watch. Notation Chess is designed for players who want to practice visualization and play without relying on a full board view. Choose your color and difficulty, select moves using standard chess notation, and review your move history as the game progresses. The app is powered by the lightweight Chal chess engine, with adjustable search depth and move variety settings. When you need a quick visual reference, use Peek at Board to check the current position. You can also undo moves and start a new game at any time. Features - Play chess on the go from Apple Watch - Practice using standard chess notation - Powered by the Chal chess engine - Choose your color and difficulty level - Review the complete move history - Peek at the board when needed - Undo moves - Adjust engine search depth and move variety

About

QuantumOrb

Features
Read full description

Reality isn't broken - it just follows different rules! A mysterious cosmic event interrupts a scientist's experiment, tearing open a bridge to an unknown Quantum World. To survive in this impossible realm, his physical body is transformed into a tiny, transparent quantum orb - the only form stable enough to exist there. Imagine the familiar idea of a higher-dimensional being entering our 3-dimensional world. Now reverse it. A human consciousness has fallen into a reality it was never meant to perceive. Space twists, paths overlap and directions lose their meaning. What looks like a simple maze is actually a world your brain cannot fully understand. Guide the scientist, now trapped inside his fragile quantum form, through surreal labyrinths, avoid dangerous anomalies, and solve puzzles that challenge your perception. Every level brings him one step closer to escaping the Quantum World and returning home. Features • Control a transparent quantum orb through mysterious mazes. • Explore worlds with impossible geometry and shifting perspectives. • Solve clever puzzles inspired by quantum concepts. • Atmospheric minimalist visuals and immersive sound. • Easy controls with increasingly challenging gameplay. • Help the scientist find the path back to reality. Can you escape a world that obeys laws beyond human understanding?

Verdict

The call

Notation Chess and QuantumOrb are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Notation Chess versus QuantumOrb: the parameters behind the verdict, then further details
ParameterNotation ChessQuantumOrb
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod, Apple WatchiPhone, iPod, Apple Watch
Requires iOS13.013.0
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperZheng LiangViktor Shcherban

In-app purchases

None

Notation Chess

No in-app purchases

None

QuantumOrb

No in-app purchases

Questions

Is Notation Chess free?
Notation Chess is free to download, with no in-app purchases.
Is QuantumOrb free?
QuantumOrb is free to download, with no in-app purchases.
Do Notation Chess or QuantumOrb have ads?
Neither Notation Chess nor QuantumOrb shows ads.

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