# HidraPedia vs Sala ERApp

The clearest difference is update cadence: Sala ERApp at every 3 months against HidraPedia's every 48 months. Sala ERApp also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

HidraPedia ships an update every 48 months, Sala ERApp every 3 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | HidraPedia | Sala ERApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hidrapedia/id1407496786/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 22 MB | 52 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Universidad del Rosario](https://appshunter.io/developer/1091330047) | [Dingo Interactive SAS](https://appshunter.io/developer/421000137) |

## What reviewers say

### HidraPedia

[App page](https://appshunter.io/ios/app/hidrapedia/id1407496786)

This app assists healthcare professionals in calculating oral and intravenous fluid volumes for children based on hydration plans. It helps determine appropriate hydration strategies and volumes for dehydrated pediatric patients with an intuitive interface. The tool also offers alarm scheduling for patient supervision and access to reference materials.

**Highlights:** Fluid volume calculation (oral & IV), Hydration plan A, B, C support, Patient weight, age, and hydration status input, Alarm scheduling for supervision, Access to reference tables, Intuitive user interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Sala ERApp

[App page](https://appshunter.io/ios/app/sala-erapp/id1475918055)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HidraPedia free?

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

### Is Sala ERApp free?

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

### Do HidraPedia or Sala ERApp have ads?

Neither HidraPedia nor Sala ERApp shows ads.

### Which is updated more often, HidraPedia or Sala ERApp?

HidraPedia ships an update every 48 months, and Sala ERApp every 3 months. Most recently, HidraPedia was updated on October 12, 2026 and Sala ERApp on October 14, 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.*