# CDN STBBI Guidelines vs SPIRO

The clearest difference is review sentiment: CDN STBBI Guidelines at 100% against SPIRO's 0%. CDN STBBI Guidelines also leads on price (Free vs $3.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

CDN STBBI Guidelines is free to download; SPIRO costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CDN STBBI Guidelines ships an update every 4 months, SPIRO every 7 months. The most recent releases landed on June 5, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | CDN STBBI Guidelines | SPIRO |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | **Free** | Paid |
| Size | 28 MB | 125 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Health Canada](https://appshunter.io/developer/408663392) | [Universite Laval](https://appshunter.io/developer/386592978) |

## What reviewers say

### CDN STBBI Guidelines

[App page](https://appshunter.io/ios/app/cdn-stbbi-guidelines/id958263397)

This app offers Canadian health professionals current recommendations for screening, diagnosing, managing, and treating sexually transmitted infections (STIs). It's based on updated guidelines and complementary resources, focusing on uncomplicated STIs in adults and youth.

**Highlights:** STI screening recommendations, Diagnosis guidance, Management protocols, Treatment strategies, Antibiotic-resistant gonorrhea updates, Concise and easy-to-use format

**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

**In-app purchases:** none


## Frequently asked questions

### Is CDN STBBI Guidelines free?

CDN STBBI Guidelines is free to download, with no in-app purchases.

### Is SPIRO free?

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

### Do CDN STBBI Guidelines or SPIRO have ads?

Neither CDN STBBI Guidelines nor SPIRO shows ads.

### Which is updated more often, CDN STBBI Guidelines or SPIRO?

CDN STBBI Guidelines ships an update every 4 months, and SPIRO every 7 months. Most recently, CDN STBBI Guidelines was updated on June 5, 2026 and SPIRO on July 9, 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.*