# SoapDIY-Soap Recipe Calculator — Lye calc, recipes & quality

> Handmade soap recipe calculator for lye, water, and quality metrics. (iPhone/iPad app by CHING FENG WANG.)

- Source: https://appshunter.io/ios/app/soapdiy-soap-recipe-calculator/id448287864 (this page in markdown: same URL + `.md`)
- Developer: [CHING FENG WANG](https://appshunter.io/developer/394371304)
- Category: Lifestyle, Utilities
- Price: $5.99
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2011-07-12
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/soapdiy-soap-recipe-calculator/id448287864/reviews.md

## What is SoapDIY?

The best calculator for making handmade soap. Enter your oil recipe and instantly get the lye, water, and quality metrics you need.

Key features • Instant saponification: solid soap (NaOH) and liquid soap (KOH), by ratio or weight • Correct superfat: automatically applied to the lye amount (fixes a common mistake) • Flexible water settings: lye concentration / water-to-lye ratio / % of oils, default 33% • KOH purity: liquid soap auto-converts to the real amount by purity (default 90%) • Quality radar: hardness, cleansing, conditioning, bubbly, creamy — with recommended ranges • 59 built-in oils with verified SAP and fatty-acid data • Custom oils: add your own oils and fatty-acid profiles • Recipe management: save, search, share, export to PDF • Batch log: record each batch with photos and get an automatic cure reminder • Dark mode, Dynamic Type, and an iPad two-column layout

Safety Wear goggles and gloves and keep the area ventilated when handling sodium/potassium hydroxide. This app is for calculation reference; always follow proper safety procedures.

## Key features

- Instant saponification calculation (NaOH/KOH)
- Automatic superfat correction
- Flexible water settings
- Quality radar with recommended ranges
- 59 built-in oils with SAP data
- Custom oil profiles
- Recipe management and PDF export
- Batch logging with cure reminders

## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/soapdiy-soap-recipe-calculator/id448287864/reviews.md

### 1/5 — 很烂

*2018-09-18*

这么烂还要6块钱，不能修改皂化价，也不能新增油脂、精油，也没有成本计算

### 4/5 — 为啥没有山茶油的

*2016-07-02*

都挺好的就是为啥没有山茶油的

### 2/5 — 希望继续改进

*2016-03-26*

功能确实太少，只能计算碱水及硬度，最好可以增加添加物选项！

### 1/5 — 烂

*2016-03-10*

烂！

### 1/5 — 不实用

*2016-01-11*

太鸡肋，还好意思收费！一点都不实用

### 2/5 — 很多地方需要改进。。。

*2015-10-19*

已经是收费app 就要做到一定标准。首先每个配方 不能单个备注，备注完每个配方都会显示备注内容实在不知道这个备注有什么卵用。
其次选好配方油输入克数的时候，如果不输入就退不出去，这也太不人性化了！
再次能不能加入精油牛奶等选项，加入精油的分量等。
赶紧改进吧！！！

### 1/5 — 要求退款！

*2015-02-14*

中文简介，为何是英文的，购买了后才知道！太过分了！

### 1/5 — 骗子

*2013-10-19*

全英文的，大忽悠！
付费的没一个好用的，骗子！

### 1/5 — 什么玩意儿啊 骗人

*2013-10-13*

骗人的东西

### 1/5 — 骗人骗人骗人骗人！

*2013-06-27*

骗了我一只🍦！

## Frequently asked questions about SoapDIY

### What is the price of SoapDIY?

SoapDIY is a paid application, with a one-time purchase price of $5.99. This grants you full access to all its features without recurring charges.

### Does SoapDIY have ads?

No, SoapDIY is ad-free. You can use the application without any interruptions from advertisements.

### What devices does SoapDIY support?

SoapDIY is available for iPhone and iPod Touch devices. It also features a two-column layout optimized for iPads.

### How often is SoapDIY updated?

The latest version, 5.0, was last updated on June 9, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support.

### Can I add my own oils to SoapDIY?

Yes, SoapDIY allows you to add custom oils and their fatty-acid profiles. This flexibility ensures you can calculate recipes with unique ingredients.

### What safety precautions does SoapDIY mention?

SoapDIY reminds users to wear goggles and gloves and ensure good ventilation when handling sodium/potassium hydroxide. It emphasizes that the app is for calculation reference and proper safety procedures must always be followed.

### What quality metrics does SoapDIY provide?

SoapDIY offers a quality radar that displays metrics for hardness, cleansing, conditioning, bubbliness, and creaminess. It also shows recommended ranges for these qualities.

### Can I save and share my soap recipes with SoapDIY?

Yes, SoapDIY includes recipe management features that allow you to save, search, share, and export your recipes to PDF format.

## Version history (last 5 releases)

### 5.0 — 2026-06-09

Rebuilt entirely in SwiftUI: instant calculation, quality radar, batch log with cure reminders, PDF export, and iPad layout — plus corrected superfat math and oil data.

### 2.3 — 2022-05-16

Fixed some issue on dark mode

### 2.2 — 2022-03-21

Support iOS 15

### 2.1 — 2018-07-06

This app has been updated by Apple to display the Apple Watch app icon.

1. Support iPhone X
2. Provide two ways to make up your recipe.

### 2.0 — 2015-05-29

What's New
1. Support iOS8
2. Add Simplified Chinese Language

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## More apps by CHING FENG WANG

- [多功能計算機](https://appshunter.io/ios/app/id470931826)
- [EZCalculator (Multi-Function)](https://appshunter.io/ios/app/ezcalculator-multi-function/id483984066)
- [ClassTable: Lecture Notes AI](https://appshunter.io/ios/app/classtable-lecture-notes-ai/id491629217)
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- [MP3 錄音筆](https://appshunter.io/ios/app/mp3/id562147822)

All apps by CHING FENG WANG: https://appshunter.io/developer/394371304

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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 2026-08-24.*