# PneumoRecs VaxAdvisor vs Circadia Talkie

The clearest difference is iOS requirement: Circadia Talkie at 15.0 against PneumoRecs VaxAdvisor's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PneumoRecs VaxAdvisor ships an update every 3 months, Circadia Talkie every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PneumoRecs VaxAdvisor | Circadia Talkie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (60 ratings)](https://appshunter.io/ios/app/pneumorecs-vaxadvisor/id1440647099/reviews)** | — |
| Number of ratings | **60** | — |
| Positive reviews | 26.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 34 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [Circadia Technologies Ltd.](https://appshunter.io/developer/1434232630) |

## What reviewers say

### PneumoRecs VaxAdvisor

[App page](https://appshunter.io/ios/app/pneumorecs-vaxadvisor/id1440647099)

This application offers personalized pneumococcal vaccination guidance based on patient age, vaccination history, and medical conditions. It aligns with the Advisory Committee on Immunization Practices' recommendations for U.S. immunization schedules.

**Highlights:** Patient-specific vaccination recommendations, Age-based guidance, Vaccination history tracking, Underlying medical condition prompts, U.S. immunization schedule compliance

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

**In-app purchases:** none


### Circadia Talkie

[App page](https://appshunter.io/ios/app/circadia-talkie/id6468366761)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PneumoRecs VaxAdvisor free?

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

### Is Circadia Talkie free?

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

### Do PneumoRecs VaxAdvisor or Circadia Talkie have ads?

Neither PneumoRecs VaxAdvisor nor Circadia Talkie shows ads.

### Which is updated more often, PneumoRecs VaxAdvisor or Circadia Talkie?

PneumoRecs VaxAdvisor ships an update every 3 months, and Circadia Talkie every 6 weeks. Most recently, PneumoRecs VaxAdvisor was updated on November 3, 2026 and Circadia Talkie on October 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.*