About this app
GPTZero: Twain Humanizer AI helps you understand, review, and refine your content with clear, instant feedback—so your writing feels natural, original, and confident. Whether you’re checking for AI-generated content, verifying originality, or polishing your tone, JustZero brings everything together in one simple, focused workflow. Key Features: - AI Content Analysis Check your text across multiple AI detection models. - Originality & Plagiarism Check Identify duplicated content and keep your work authentic. - Humanize Text Improve readability for a natural, human-like tone. - Essay & Content Generator Create structured essays or articles with ease. - AI Audio Detection Analyze audio files for signs of AI-generated speech. - Easy Input & History Paste or upload content and review past checks anytime. Quick to start and easy to use, GPTZero: Twain Humanizer AI is designed for everyday writing needs—helping you analyze content clearly and improve it with confidence, every step of the way. We offer multiple subscription options for you: -$4.99/week -$9.99/month -$49.99/year • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://www.freeprivacypolicy.com/live/5fcb94e8-513e-4ac0-9a64-7f4bcb4e44e1 Terms of Use: https://www.freeprivacypolicy.com/live/a94a49ed-f785-47a8-9cb1-5123409b9077
Latest release
What’s New
General Bug fixing.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 24, 2026 · 5:44 PM Free
Screenshots
