# Rash vs SPIRO

The clearest difference is review sentiment: Rash at 88% against SPIRO's 0%. SPIRO's advantage is price ($3.99 vs $9.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Rash costs $9.99 and SPIRO $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 7 months. The most recent releases landed on September 22, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Rash | SPIRO |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rash/id669851114/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **87.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | Every 7 months |
| Monetization | Paid | Paid |
| Size | 172 MB | 125 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bruno Girodias](https://appshunter.io/developer/669851117) | [Universite Laval](https://appshunter.io/developer/386592978) |

## What reviewers say

### Rash

[App page](https://appshunter.io/ios/app/rash/id669851114)

An educational tool and memory aid for identifying and understanding common childhood eruptive diseases. It offers essential information on care, treatment, and prevention, complemented by visual aids.

**Highlights:** Childhood disease identification, Care and treatment information, Preventive measures, Photos and illustrations, Memory aid sheets, Multilingual support (English, French, Spanish)

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

**In-app purchases:** none


### SPIRO

[App page](https://appshunter.io/ios/app/spiro/id1135982423)

This medical app assists healthcare professionals and students in interpreting spirometry tests. It provides diagnostic and treatment suggestions based on entered data and offers access to educational materials and respiratory health guidelines.

**Highlights:** Interpret spirometry tests, Diagnostic suggestions, Treatment suggestions, Access respiratory guidelines, Educational material, Patient follow-up tool

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rash free?

Rash costs $9.99, with no in-app purchases.

### Is SPIRO free?

SPIRO costs $3.99, with no in-app purchases.

### Do Rash or SPIRO have ads?

Neither Rash nor SPIRO shows ads.

### Which is updated more often, Rash or SPIRO?

Rash ships an update every 7 months, and SPIRO every 7 months. Most recently, Rash was updated on September 22, 2026 and SPIRO on September 30, 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.*