Knife Sharpening Log - Whetlog
Whetstone grit & blade tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Keep your stones, blades, and sharpening sessions together, with the grit progression you used last time. Free to log — Lifetime adds sharing and export.
Keep a clear record of your stones, blades, and sharpening sessions. Whetlog helps home cooks, sharpeners, and knife collectors remember their tools and the grit progressions they use.
STONE WALL
• Catalog water stones, ceramic stones, diamond plates, natural stones, and strops
• Sort your collection by grit and keep a separate wishlist
• Save maker, model, grit, type, and personal notes
BLADE LOGBOOK
• Keep a card for each kitchen knife or other blade
• Record maker, steel, type, and sharpening history
• See which progression you used last time
SESSION TRACKER
• Log the stones used, in order
• Save duration, result rating, stropping, and notes
• Revisit prior sessions before the next sharpening
LIFETIME UNLOCK
Core cataloging and session logging stay available without an account. A one-time Lifetime purchase unlocks Blade Card sharing and data export. No subscription and no renewal.
PRIVATE BY DESIGN
Your catalog and sharpening history stay on your device. Whetlog is a record-keeping tool, not sharpening instruction or safety guidance. Always follow the instructions supplied with your tools.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Clearer upgrade screen: see exactly what stays free, what Premium adds, and when and how renewal works. Plus small fixes.
The developer, Ryosuke Igarashi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ryosuke Igarashi
- Size
- 4.5 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 12 more
- English, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Swedish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Whetlog Pro Lifetime $9.99
- Copyright
- © 2026 Ryosuke Igarashi