# HTMIS Mobile Application vs PediaRex

The clearest difference is in-app purchases: HTMIS Mobile Application at none against PediaRex's 1. HTMIS Mobile Application also leads on iOS requirement (10.0 vs 15.0). PediaRex's advantage is update cadence (daily vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. PediaRex sells 1 one-off in-app purchase. HTMIS Mobile Application asks for nothing beyond the download.

HTMIS Mobile Application ships an update every 8 months, PediaRex daily. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HTMIS Mobile Application | PediaRex |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 39 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Livro Systems Incorporated](https://appshunter.io/developer/1896544025) | [Sajil Haq](https://appshunter.io/developer/1887198954) |

## What reviewers say

### HTMIS Mobile Application

[App page](https://appshunter.io/ios/app/htmis-mobile-application/id1597723691)

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

**In-app purchases:** none


### PediaRex

[App page](https://appshunter.io/ios/app/pediarex/id6761159114)

This educational tool helps medical students practice pediatric dose calculations and pharmacology. It offers offline practice for various medication forms and includes a comprehensive study guide with clinical notes and warnings. An optional Pro version removes ads and adds advanced features.

**Highlights:** Weight-based pediatric dose practice, Offline calculation for syrups, drops, tablets, injectables, Study guide with clinical notes and warnings, Over 620 pediatric medicine entries, Pro version with IP Mode and ad-free experience, Searchable medicine database

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PediaRex Pro Onetime purchase | $0.99 | one-time |


## Frequently asked questions

### Is HTMIS Mobile Application free?

HTMIS Mobile Application is free to download, with no in-app purchases.

### Is PediaRex free?

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

### Do HTMIS Mobile Application or PediaRex have ads?

Neither HTMIS Mobile Application nor PediaRex shows ads.

### Which is updated more often, HTMIS Mobile Application or PediaRex?

HTMIS Mobile Application ships an update every 8 months, and PediaRex daily. Most recently, HTMIS Mobile Application was updated on October 8, 2026 and PediaRex on October 11, 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.*