# Katana: Knife Collection — Japanese & Kitchen Knives > Knife collection organizer and Japanese knife research platform. (iPhone/iPad app by ADAM DAVID LOWENSTEIN.) - Source: https://appshunter.io/ios/app/katana-knife-collection/id6794938474 (this page in markdown: same URL + `.md`) - Developer: [ADAM DAVID LOWENSTEIN](https://appshunter.io/developer/6794938476) - Category: Lifestyle - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 18 MB - Languages: American English - Released: 2026-09-16 - Data updated: 2026-10-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/katana-knife-collection/id6794938474/reviews.md ## What is Katana? Katana helps you organize your knife collection and explore the people, places, and craft behind Japanese and kitchen knives. Built for the knife collector, home cook, and chef, it brings knife collecting, private records, and source-backed Edge Index research together. MAKE YOUR COLLECTION YOUR OWN Record each knife's maker, steel, dimensions, purchase details, and personal notes. Add photographs and adjust their framing while preserving the originals. Organize the knives you own, your archive, and your wishlist. EXPLORE JAPANESE KNIVES WITH EDGE INDEX Discover makers, workshops, steels, knife types, techniques, and regions. Read complete maker profiles and regional articles with their supporting sources. Explore the regional map and save research to your private reading list. Public research stays separate from your personal knife records. Regional articles are included for offline reading and refreshed with app updates. ADD KNIVES YOUR WAY Enter a knife manually, import a supported retailer page, scan a receipt, or bring in a spreadsheet. Review the information before saving. Katana also supports scanning and claiming compatible digital knife passports. KEEP YOUR COLLECTION WITH YOU Sign in to the same Katana account on your devices to synchronize your collection and saved research. Clear status and recovery choices help you manage interrupted connections and changes made on more than one device. MEET OTHER KNIFE ENTHUSIASTS Explore Social by topic, ask a question, or share a collection story. View shared collections, inspect photos, give Kudos, save posts, follow discussions, and contribute field notes. Reporting and member-blocking controls are available. SHARE BY CHOICE Social is optional. Choose a display name and accept the rules to join. Joining never publishes your collection. Review and confirm each post; purchase information and notes are excluded unless you choose to include them. Retailers do not receive automatic access to your collection. Follow retailers independently and choose whether to allow their updates or share contact details and interests. GET STARTED AND STAY IN CONTROL A skippable guide introduces the essentials. Search in-app help or prepare feedback from Account. Export selected knives as CSV, Excel, or a photo PDF. Manage your preferences or permanently delete your account from within the app. Social posts, comments and photos you choose to publish can be read publicly on Katana and Edge Index. Your collection and care journal stay private unless you choose to share their contents. Posts are checked against the community rules before publication. Reporting, blocking and withdrawal controls are available. ## Key features - Organize knife collection with details - Explore Japanese knife makers and regions - Add photos and personal notes - Import knives via retailer pages or spreadsheets - Connect with other knife enthusiasts - Optional social sharing features ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/katana-knife-collection/id6794938474/reviews.md ### 5/5 — Very comprehensive *2026-09-27* This is the most comprehensive knife app I’ve seen. The details about the knife makers, the regions and the individual knives… I could spend hours on here. ### 5/5 — Terrific for my Knife passion! *2026-09-16* I love this app! It is a terrific way to track the knives I have and explore the stuff I want!!!! ## Frequently asked questions about Katana ### What is Katana? Katana is an app designed to help you organize your knife collection and explore the world of Japanese and kitchen knives. It allows you to record details about each knife, research makers and regions, and connect with other enthusiasts. ### How do I add knives to my collection in Katana? You can add knives manually, import from supported retailer pages, scan receipts, or import from a spreadsheet. The app also supports scanning and claiming compatible digital knife passports. ### Can I keep my knife collection private in Katana? Yes, your collection and care journal remain private unless you choose to share their contents. Social features are optional, and you control what information is shared. ### Does Katana have ads? No, Katana does not contain advertisements. It is a free application without any ad interruptions. ### How often is Katana updated? The app was last updated on October 5, 2026, with version 15.0.1. Regional articles for offline reading are refreshed with app updates. ### What devices does Katana support? Katana is available for iPhone and iPod devices. You can sign in to the same account on multiple devices to synchronize your collection and research. ### Can I export my knife collection data from Katana? Yes, you can export selected knives as CSV, Excel, or a photo PDF. This allows you to back up your collection or use the data elsewhere. ### What is the age rating for Katana? Katana has an age rating of 4+. This indicates it is suitable for users of all ages. ## Version history (last 5 releases) ### 15.0.1 — 2026-10-05 Adding a knife starts with Brand, with separate fields for smith, sharpener and polisher. Find names in either order and steels by familiar Blue and White names. Record grind, bevel balance and finish separately. Preview a photo before saving it, or cancel and choose another. Clearer sections make longer entries easier to complete. ### 15.0 — 2026-10-01 Bug fixes and speed improvements ### 1.4.1 — 2026-09-30 Knife entry now keeps unfinished edits in place during background sync and waits for you to choose Save. Maker suggestions work in Add and Edit, and polisher has its own field. Find Add knife at the top of Collection, choose a worksheet and columns for spreadsheet imports, and browse live retailer channels. ### 1.4.0 — 2026-09-29 Each knife now has a private care journal for sharpening and maintenance, with dates, tools, notes and before-and-after photos. Share individual knives more easily, open full Social posts with Read more, and choose which Social alerts you receive. This update also improves maker summaries, photo storage and recovery, and screen sizing when returning from Social to Collection. ### 1.3.3 — 2026-09-27 Retailer updates now have their own inbox, with unread counts and a separate view for each shop. Swipe between retailers, save messages for later, and archive updates you have finished reading. Find your interests beside your wishlist, and manage retailer and Social notifications independently in Account. Your collection and retailer sharing choices stay unchanged. ## Apps similar to Katana | App | Rating | Price | Category | | --- | --- | --- | --- | | [EdgeVault](https://appshunter.io/ios/app/edgevault/id6781181072) | — | Free | Lifestyle | | [Fade Log](https://appshunter.io/ios/app/fade-log/id6760555418) | — | Free | Lifestyle | | [Domika](https://appshunter.io/ios/app/domika/id6495262192) | 4.6 (8) | Free | Lifestyle | | [SECH](https://appshunter.io/ios/app/sech/id6744701643) | — | Free | Lifestyle | | [Dependable Cleaners](https://appshunter.io/ios/app/dependable-cleaners/id1360468584) | 5.0 (9) | Free | Lifestyle | | [HAGOBOGO - Global](https://appshunter.io/ios/app/hagobogo-global/id6747214967) | 4.8 (5) | Free | Lifestyle | ## More apps by ADAM DAVID LOWENSTEIN - [PerkRounds](https://appshunter.io/ios/app/perkrounds/id6798515052) All apps by ADAM DAVID LOWENSTEIN: https://appshunter.io/developer/6794938476 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*