FocusGrid vs Star Fort Builder

FocusGrid – Train Your Attention Daily FocusGrid is a minimalist brain training game designed to improve your attention, speed, and concentration. Tap numbers in order as fast as possible. Lower time = better focus. Why FocusGrid? • Simple and distraction-free design • Daily goal system (3 sessions per day) • Track streaks and performance • See measurable improvement over time • Unlock Pro for advanced statistics How It Works 1. Choose your grid size (4×4, 5×5, 6×6) 2. Tap numbers from 1 to N in order 3. Improve your time 4. Train daily and build your streak Who Is It For? • Students improving concentration • Professionals sharpening mental focus • Anyone who wants a quick daily brain workout Pro Version (One-Time Purchase) Unlock: • 6×6 advanced grid • Extended trend analysis • Future Pro features No subscriptions. One purchase. Lifetime access. Train your focus in just a few minutes per day.

Assuming you mean the **last App Store version users received**, the app has changed substantially. Here’s a release-ready summary: ## Major additions - Added **“What Are Star Forts?”**, an illustrated historical introduction with links into related forts, books, and features. - Added a full **Discover** section with curated books, documentaries, museums, tours, maps, artwork, and articles. - Added a **Science** section, including an interactive cannon-trajectory simulator. - Added **Plan Your Visit** information to fort pages: - Official websites - Hotels and nearby stays - Tours and restaurants - Car-rental options for remote forts - Clear affiliate-link disclosures - Added verified **Wikipedia links for 104 of 107 forts**. ## Library and historical documents - Expanded the offline historical Library with more fortification and scientific works. - Added **Galileo’s _Two New Sciences_** and **Newton’s _Principia_**, with title-page cover images. - Added the public-domain **1638 English translation of Marolois’s _Art of Fortification_** to the project, pending its final Library wiring. - Compressed several large built-in books while preserving readability: - Earlier compression saved approximately **82 MB** - Coehoorn’s book was reduced from **18.6 MB to 5.8 MB** - Verified that every currently registered offline book opens and reports the correct page count. ## Fort information improvements - Added visible **condition badges** to fort detail pages. - Added **design traditions** to Browse cards. - Added historical photographs and related content improvements. - Added clearer notices when no reliable historical measurements have been published. - Improved the display of alternate and historical fort names. - Added museum locations to the Google Earth export. ## Fort Builder improvements - Added shared **wall-profile controls** and cross-section visualizations. - Added wall cross-sections to exported Builder PDFs. - Added an **Export Options** sheet so users can choose whether to include: - Fort diagram - Measurements - Wall profile - Improved fort geometry, measurements, and proportional rendering. - Added or improved wilderness-fort building features and walkthrough content. ## Navigation and appearance - Reorganized the home screen into the requested order: 1. What Are Star Forts? / Discover 2. Browse Forts / Fort Builder 3. Library / Science 4. Google Earth View / Settings 5. About - Updated the hamburger menu to follow the same structure. - Added optional image tiles to the home screen. - Added subtle visual polish to buttons. - Replaced the iOS/App Store icon with the aerial photograph of **Fort Bourtange**. ## iPhone reliability - Audited every custom menu, modal, drawer, and bottom sheet. - Fixed Browse and Library filter sheets so their contents cannot collapse on a real iPhone. - Previously fixed the same native-layout issue in the unit selector. - Verified all pop-ups in Expo Go on a physical iPhone. - Confirmed the photo lightbox, comparison picker, Builder export options, PDF page-jump dialog, menus, filters, and native photo action sheets work correctly. ## Release information - Visible app version is now **1.0.1**. - The new Fort Bourtange icon is configured specifically as the iOS icon used on the phone and in App Store Connect. ### Short “What’s New” version > Explore a new illustrated introduction to star forts, discover curated books, museums, tours, and documentaries, and experiment with fortification science. Fort pages now include richer historical information, travel resources, official links, and improved measurements. This release also expands the offline document library, improves PDF exports, introduces a new Fort Bourtange app icon, reorganizes navigation, and fixes menus and filter sheets on iPhone.