Comparison

A vs Star Exploration

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

Head to head
About

A

Create unique geometric shapes through iterative affine transformations. Apply translations, rotations, and scaling to various objects with gradient coloring to generate visually interesting results.

Highlights
  • Affine transformation for shape creation
  • Translation, rotation, and scaling
  • Gradient coloring
  • Supports circles, rectangles, stars, polygons, and lines
  • Iterative shape generation
Read full description

This app allows you to create interesting shapes using affine transformation. Affine transformation can do translation, rotation and scaling on object's coordinate. We do iterations, and in each iteration we apply the affine transformation on the object (circle, rectangle, star, polygon or line), coloured in gradient. At the end, you may like the result. Have fun.

About

Star Exploration

Features
Read full description

1. About Star Exploration Star Exploration is a novel and interesting game of reasoning. The star map is divided into multiple star regions, some of which have a planet with a color of red, yellow, and blue. The purpose of the game is to gather three planets of different colors together through movement, and there is only one aggregated planet in each sector area divided from the center of the circle. 2. How to Play a. Move: Each planet can only move up to one step. The blue planet can move diagonally by one grid, the green planet can move left and right or up and down by one grid, and the red planet can move up, down, left and right by two grid. b. Zoom: Click the + - button to zoom in or out on the star map. Drag and drop star map in the blank space. c. Undo: click the UNDO button in the upper right corner. d. Hint: click the HINT button right above.

Screenshots

A4 screens
Star Exploration3 screens

Verdict

The call

The clearest difference is in-app purchases: A at none against Star Exploration's 1. Star Exploration's advantage is update cadence (every 10 months vs every 70 months). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Star Exploration sells 1 one-off in-app purchase. A asks for nothing beyond the download.

UpkeepUpdate frequency

A ships an update every 70 months, Star Exploration every 10 months. The most recent releases landed on November 13, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 8 level
A versus Star Exploration: the parameters behind the verdict, then further details
ParameterAStar Exploration
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 70 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.615.6
Further details — not scored
Size24 MB5 MB
Age rating4+4+
DeveloperJohannes Dwiartanto振华 许

In-app purchases

None

A

No in-app purchases

1 purchases

Star Exploration

One-time1
  • Full Version$0.99

Questions

Is A free?
A is free to download, with no in-app purchases.
Is Star Exploration free?
Star Exploration is free to download, with in-app purchases available.
Do A or Star Exploration have ads?
Neither A nor Star Exploration shows ads.
Which is updated more often, A or Star Exploration?
A ships an update every 70 months, and Star Exploration every 10 months. Most recently, A was updated on November 13, 2026 and Star Exploration on November 8, 2026.

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