App Store
Version 1.0.1 · 2026-07-07
We’ve completely revamped the ranking screen. You can now add other players as friends. UI improvements and minor bug fixes.
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 1.0.1, updated 2026-07-07.








Store screenshots supplied by the developer.
Reconstruct the contours of the world with your fingertips.
atlas12 is a drawing app that tests the absolute limits of your memory and precision.
Trace the silhouette of a given region freehand, and a proprietary algorithm will cross-reference it with actual map data. By analyzing deviations in shape, position, and area, your accuracy is visualized as a precise percentage.
Japanese prefectures, US states, Chinese provinces, and nations worldwide.
From familiar topographies to unknown borders, every map is directly linked to a global leaderboard.
Compete against everyone—from close friends to unseen rivals.
Achieve uncompromising precision and seize the top of the world.
[Specifications]
・Intuitive Controls: A refined, quiet experience of drawing a single line on the canvas.
・Precision Scoring: Calculates deviations from the actual map based on shape, position, and area.…
From the developer’s store description.
For developers and the curious
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No review analysis published for this app.
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No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
We’ve completely revamped the ranking screen. You can now add other players as friends. UI improvements and minor bug fixes.
atlas12What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
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