Any collection of records is only as safe as its most recent copy sitting somewhere other than the original. That’s true of a binder of paper sharpening logs just as much as a phone full of years of knife specs and maintenance history — the format doesn’t protect you, a second copy does.
A useful shorthand for this is the “3-2-1” rule: three copies of your data, on two different types of storage, with at least one copy kept somewhere other than where the originals live. For a knife collector, that could mean the live data on a phone, a backup file on a computer or external drive, and a third copy in cloud storage or emailed to yourself as an archive. None of this requires specialized software — it’s a habit worth having regardless of how the records are kept.
What this article covers
This article outlines the essential data categories that require protection, applies a general backup mindset before getting into the app-specific mechanics, and explains the two export methods available along with the limitations of the free tier during import.
Why this matters for a knife collection specifically
A knife collection and its sharpening history represent years of specific, hard-to-reconstruct data — steel grades, purchase dates, edge angles, and which stone sequence actually worked on a particular blade. If that information is stored only on a single device, a lost, damaged, or replaced phone can erase all of it at once, with no way to recall the details from memory.
What a complete backup should cover
A comprehensive backup needs to protect every category of data in the vault:
- Knife Collection — brand, model, steel type, and purchase history.
- Whetstone Library — grit levels and maintenance states for every stone.
- Sharpening Sessions — angles, durations, and stone sequences.
- Wishlist Items — intended future acquisitions.
- EDC Logs — which knife was carried on which date.
A text-only export covers the data itself but not photos; a full backup needs the images included too, since a knife’s condition photos or a session’s before/after shots can’t be reconstructed from a spreadsheet row.
Choosing an export format: CSV vs. Photo ZIP
EdgeVault provides two export formats to cover both needs. CSV Export produces spreadsheet-friendly text files for all five data categories above — useful for quick review or insurance appraisals — but doesn’t include photos. Photo ZIP Backup bundles the full database along with every associated image (knife photos, sharpening before/after shots) and is the format to use for a complete device-to-device restore.
How the restoration process works
Restoring a backup is additive: it adds the records from the file to whatever’s already on the device rather than overwriting it. Free-plan limits still apply during restoration — if an imported ZIP contains more than 10 knives, 10 whetstones, or 10 wishlist items, the free plan will only take in records up to those limits, with a one-time Pro upgrade needed to restore the rest.
Securing your history with EdgeVault
Both CSV Export and Photo ZIP Backup are included for every user regardless of plan, so the ability to protect your history isn’t behind a paywall.
Summary
A knife collection’s records — like any single-device data — need a copy that isn’t just sitting on one phone. Applying a 3-2-1 mindset, and using a photo-inclusive backup format rather than text alone, protects years of steel specs and sharpening history from a single lost or broken device. For a broader look at why keeping this data in one place beats a spreadsheet, see One App or a Spreadsheet? What Knife Collectors Should Actually Be Recording.
Follow the manufacturer’s specifications and safe handling instructions when using, sharpening, or storing bladed tools.
This article organizes information from a recording and organizing perspective. If you notice an error or outdated information, please contact us. Last verified: July 2026
