# ISSWSH vs Vulvar Pain Algorithm

The clearest difference is price: ISSWSH at Free against Vulvar Pain Algorithm's $4.99. Vulvar Pain Algorithm's advantage is update cadence (every 3 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ISSWSH is free to download; Vulvar Pain Algorithm costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ISSWSH ships an update every 2 months, Vulvar Pain Algorithm every 3 days. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | ISSWSH | Vulvar Pain Algorithm |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 121 MB | 2 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [International Society for the Study of Women's Sexual Health](https://appshunter.io/developer/1497734142) | [Jennifer Lanoff](https://appshunter.io/developer/1886721101) |

## What reviewers say

### ISSWSH

[App page](https://appshunter.io/ios/app/isswsh/id1497734143)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vulvar Pain Algorithm

[App page](https://appshunter.io/ios/app/vulvar-pain-algorithm/id6760949362)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISSWSH free?

ISSWSH is free to download, with no in-app purchases.

### Is Vulvar Pain Algorithm free?

Vulvar Pain Algorithm costs $4.99, with no in-app purchases.

### Do ISSWSH or Vulvar Pain Algorithm have ads?

Neither ISSWSH nor Vulvar Pain Algorithm shows ads.

### Which is updated more often, ISSWSH or Vulvar Pain Algorithm?

ISSWSH ships an update every 2 months, and Vulvar Pain Algorithm every 3 days. Most recently, ISSWSH was updated on September 18, 2026 and Vulvar Pain Algorithm on September 15, 2026.

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