# Skate Hollow: ROH & FBV — Blade hollow, bite & FBV calc

> Blade hollow, bite & FBV calc (iPhone/iPad app by Yoshifumi Sato.)

- Source: https://appshunter.io/ios/app/skate-hollow-roh-and-fbv/id6795049796 (this page in markdown: same URL + `.md`)
- Developer: [Yoshifumi Sato](https://appshunter.io/developer/6780413827)
- Category: Sports, Utilities
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 12 MB
- Languages: American English
- Released: 2026-08-05
- Data updated: 2026-09-09
- User reviews in markdown: https://appshunter.io/ios/app/skate-hollow-roh-and-fbv/id6795049796/reviews.md

## What is Skate Hollow?

Skate Hollow helps hockey and figure skaters pick the right radius of hollow (ROH) and understand exactly what it does to the blade.

Pick a hollow and instantly see:
- Bite (edge) angle — how much the edges grip the ice
- Hollow depth — how deep the grind sits
- FBV equivalent — the closest Blackstone flat-bottom-V feel (100/50, 90/1, and more)
- Inch and millimeter, side by side

FIND YOUR HOLLOW
Not sure where to start? Enter your weight, skill level, position, and ice hardness to get a sensible starting-point range, based on widely used sharpening guides. It is a starting point, not a rule — your final choice is always yours and your sharpener's.

SAVE YOUR SKATES
Keep a list of your skates with their preferred hollow, FBV, and blade width, so you can tell any shop exactly what to grind.

BUILT RIGHT
- One time purchase. No subscription, no ads.
- Works completely offline. Nothing leaves your device.
- No account, no tracking, no permissions.

The math is exact geometry; the recommendations and FBV feel-equivalents are guidance from published sharpening resources. Final sharpening and safety are the responsibility of the sharpener and skater.


## Version history (last 1 release)

### 1.0 — 2026-08-05

No release notes.

## More apps by Yoshifumi Sato

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- [こども語録｜子供の名言・言い間違いメモ](https://appshunter.io/ios/app/id6782562338)
- [そなえ費 特別費の積立｜車検・自動車税・固定資産税](https://appshunter.io/ios/app/id6783801899)

All apps by Yoshifumi Sato: https://appshunter.io/developer/6780413827

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*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 2026-09-09.*