# Leather Hard: Pottery Calc — Throw to volume or measure it

> Throw to volume or measure it (iPhone/iPad app by Maria Fernanda de Barros e Azevedo.)

- Source: https://appshunter.io/ios/app/leather-hard-pottery-calc/id6828105422 (this page in markdown: same URL + `.md`)
- Developer: [Maria Fernanda de Barros e Azevedo](https://appshunter.io/developer/1441449210)
- Category: Reference, Lifestyle
- Price: $4.99
- Age rating: +4
- Requires: iOS 17.0 · 6 MB
- Languages: Brazilian Portuguese, American English
- Released: 2026-11-01
- Data updated: 2026-11-05

## What is Leather Hard?

Make the mug you meant to make, and know what the one you just threw will hold.

Leather Hard works both ways at the wheel.

MAKE TO VOLUME
Choose the piece, the capacity you want after firing, the wall profile and your clay's shrinkage. Get the wet inside measures to aim for: rim diameter, inside height, base diameter and headspace, in centimetres.
• Espresso, cup, mug, tumbler, bowl or pitcher
• Suggested capacities, or type your own from 30 to 5,000 ml
• Straight, tapered or rounded profile
• A to-scale drawing that updates as you go

MEASURE A PIECE
Already thrown? Enter the inside measures of the wet piece and see how much it will hold after firing, up to the fill line and full to the rim.
• Works with the same profiles and shrinkage
• One tap carries the suggested measures over, so you only correct what came out different

MADE FOR THE WHEEL
• Inside measures, taken while the clay is still wet
• A visual guide shows where to take each measure
• Accounts for shrinkage in all three dimensions and the space left below the rim
• Clear about its assumptions and margin of error

SIMPLE AND PRIVATE
• No account and no ads
• Works offline
• English and Portuguese, switchable in the app

The measures are geometric estimates for round, symmetrical pieces. Uneven walls, warping and your clay's real shrinkage can change the result, so test with your own clay.

## Is Leather Hard safe?

Not enough ratings yet to assess Leather Hard.

## Is Leather Hard legit?

Leather Hard: Pottery Calc appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Leather Hard is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-01

No release notes.

## More apps by Maria Fernanda de Barros e Azevedo

- [Tangle Patterns Mega Pack](https://appshunter.io/ios/app/tangle-patterns-mega-pack/id928918285)
- [Fibo - Fibonacci Calculator](https://appshunter.io/ios/app/fibo-fibonacci-calculator/id1441449211)
- [Tangleverse: Keep your tangles](https://appshunter.io/ios/app/tangleverse-keep-your-tangles/id1575306991)

All apps by Maria Fernanda de Barros e Azevedo: https://appshunter.io/developer/1441449210

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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 2026-11-05.*