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  • Zero Substrate: Cyber Thriller screenshot 1
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About Zero Substrate: Cyber Thriller

The arterial spray hit the wall at forty-seven degrees. Not forty-five. Not fifty. Exactly forty-seven, like someone calculated the trajectory with software before swinging. A body on the floor of a Substrate BioLabs executive. One set of DNA. Three living people, all with alibis, all claiming they have never met. The lab ran it three times. Same result each time. Zero Substrate is a forensic thriller told the way a case lands on your desk. Twelve chapters of first-person investigation, built as a case file rather than a novel: classified memos, DNA trace reports, chain-of-custody logs, intercepted audio, witness testimony. The documents are not illustrations of the story. They are the story. THE INVESTIGATION Evidence unlocks as you read. Reach the moment in the text where something surfaces and it lands in your Evidence Vault, where you can examine it properly and return to it later. The vault fills as the case does. By the end you are holding everything the investigator was holding, and you know exactly when each piece arrived. BUILT FOR READING A reader designed for long sessions in the dark. Three text sizes, a dim mode for night, bookmarks that hold your place mid-sentence, and progress tracked per chapter. Reading statistics if you want them, out of the way if you do not. WHAT IS INSIDE - Twelve connected chapters, a single continuous case - An Evidence Vault that fills as you read - Case files, forensic reports, transcripts and recordings - Bookmarks, per-chapter progress and reading statistics - Full Japanese translation - Completely offline CHAPTER ONE IS FREE Read the first chapter, all of it, before deciding. Unlocking the remaining eleven is a single purchase. No subscription, no second unlock, no advertising, no accounts. PRIVACY Nothing is collected. No analytics, no tracking, no sign-in. Your progress, bookmarks and evidence stay on your device and go nowhere else. The app works with the network off. Twenty years before VOID, this is where it started.

What’s new

Version 1.1.7 · Updated July 29, 2026

- Sharper reading statistics: your time in the case file is now tracked exactly - Evidence arrives more reliably, so nothing is missed on the way through a chapter - Smoother, lighter reader over long sessions - Better VoiceOver support throughout the reader and settings - Refinements to the Japanese translation

App privacy

The developer, Chia Ying Ho, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

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