# Certa Dose vs PED

The clearest difference is monetization model: PED at free with in-app purchases against Certa Dose's subscription. Certa Dose's advantage is update cadence (every 3 months vs every 10 months) and iOS requirement (13.0 vs 15.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Certa Dose sells 2 in-app purchases, starting at $3.99 per month and PED sells 3 in-app purchases, starting at $5.99 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Certa Dose against 4.9 for PED. Both are backed by a comparable volume of ratings — 5 and 7 respectively.

Certa Dose ships an update every 3 months, PED every 10 months. The most recent releases landed on September 8, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Certa Dose | PED |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/certa-dose/id1524942244/reviews)** | [4.9 (7 ratings)](https://appshunter.io/ios/app/ped-er/id1568969247/reviews) |
| Number of ratings | 5 | **7** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 16 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Certa Dose, Inc.](https://appshunter.io/developer/1524942636) | [Tsai Newcomb Technology LLC](https://appshunter.io/developer/1568969249) |

## What reviewers say

### Certa Dose

[App page](https://appshunter.io/ios/app/certa-dose/id1524942244)

This app helps healthcare professionals confidently administer high-risk medications. It provides visual verification for each step, estimates weight-based doses, and documents sessions instantly. Designed to reduce critical dosing errors, it offers peace of mind in high-stress medical environments.

**Highlights:** Visual medication administration verification, Weight-based dose estimation, Syringe volume visualization, Instant session documentation, Medication information and contraindications, Virtual pediatric measuring tape

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan | $3.99 | per month |
| Yearly subscription | $29.99 | per year |


### PED

[App page](https://appshunter.io/ios/app/ped-er/id1568969247)

This medical app provides critical pediatric dosing information for over 170 drugs and infusions, along with vital sign references and calculators. It's designed for emergency medical professionals to quickly access essential data for small patients.

**Highlights:** Pediatric drug dosing information, Over 170 common drugs and infusions, Weight-based vital sign ranges, Medication infusion calculations, Medical and trauma references, Clinical decision support calculators

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Month Subscription | $5.99 | per 3 months |
| 6 Month Subscription | $10.99 | per 6 months |
| One Year Subscription | $19.99 | per year |


## Frequently asked questions

### Is Certa Dose free?

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

### Is PED free?

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

### Which has better reviews, Certa Dose or PED?

Certa Dose is rated higher. Certa Dose averages 5.0 out of 5 from 5 ratings, while PED averages 4.9 from 7 ratings.

### Do Certa Dose or PED have ads?

Neither Certa Dose nor PED shows ads.

### Which is updated more often, Certa Dose or PED?

Certa Dose ships an update every 3 months, and PED every 10 months. Most recently, Certa Dose was updated on September 8, 2026 and PED on August 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*