# SplitFlap Display vs Soap Lye Calculator

The clearest difference is price: SplitFlap Display at Free against Soap Lye Calculator's $3.99. SplitFlap Display also leads on update cadence (every 3 weeks vs every 3 months). Soap Lye Calculator's advantage is in-app purchases (none vs 4) and iOS requirement (15.1 vs 18.6). On ads and device support there is nothing between them.

SplitFlap Display is free to download; Soap Lye Calculator costs $3.99 up front. SplitFlap Display sells 4 in-app purchases, starting at $0.99 per 7 days. Soap Lye Calculator asks for nothing beyond the download.

SplitFlap Display ships an update every 3 weeks, Soap Lye Calculator every 3 months. Both last shipped on October 12, 2026.

## The numbers

| Metric | SplitFlap Display | Soap Lye Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 50 MB | 34 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | **iPhone, iPad, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Richardson](https://appshunter.io/developer/1887851473) | [Jelmer van Nuss](https://appshunter.io/developer/1880809991) |

## What reviewers say

### SplitFlap Display

[App page](https://appshunter.io/ios/app/splitflap-display/id6761390167)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SplitFlap Weekly | $0.99 | per 7 days |
| SplitFlap Monthly | $2.49 | per month |
| SplitFlap Yearly | $24.99 | per year |
| SplitFlap Lifetime | $49.99 | one-time |


### Soap Lye Calculator

[App page](https://appshunter.io/ios/app/soap-lye-calculator/id6762357300)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SplitFlap Display free?

SplitFlap Display is free to download, with in-app purchases available.

### Is Soap Lye Calculator free?

Soap Lye Calculator costs $3.99, with no in-app purchases.

### Do SplitFlap Display or Soap Lye Calculator have ads?

Neither SplitFlap Display nor Soap Lye Calculator shows ads.

### Which is updated more often, SplitFlap Display or Soap Lye Calculator?

SplitFlap Display ships an update every 3 weeks, and Soap Lye Calculator every 3 months. Most recently, SplitFlap Display was updated on October 12, 2026 and Soap Lye Calculator on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*