# VetPDA Calcs vs Plumb's | Standards

The clearest difference is price: Plumb's | Standards at Free against VetPDA Calcs's $4.99. Plumb's | Standards also leads on ratings volume (3.4K vs 16) and update cadence (every 3 weeks vs every 2 months). VetPDA Calcs's advantage is review sentiment (83% vs 56%) and chart position (#124 vs unranked). On rating, ads, in-app purchases and device support there is nothing between them.

Plumb's | Standards is free to download; VetPDA Calcs costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for VetPDA Calcs against 4.9 for Plumb's | Standards. That said, the two scores are not equally well evidenced: Plumb's | Standards has 3.4K ratings behind it against 16, so its average is the more settled of the two. Written reviews are what separate them: 83% of VetPDA Calcs's written reviews are positive against 56% of Plumb's | Standards's.

VetPDA Calcs ships an update every 2 months, Plumb's | Standards every 3 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | VetPDA Calcs | Plumb's | Standards |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.9 (16 ratings)](https://appshunter.io/ios/app/vetpda-calcs/id356519283/reviews) | **[4.9 (3.4K ratings)](https://appshunter.io/ios/app/plumbs-standards/id1556729700/reviews)** |
| Number of ratings | 16 | **3.4K** |
| Positive reviews | **82.6% of reviews** | 55.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Paid** | Subscription |
| Best chart rank | **#124** | — |
| Size | 2 MB | 62 MB |
| Requires iOS | **12.3** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [University of California, Davis](https://appshunter.io/developer/356519286) | [Brief Media](https://appshunter.io/developer/1018418856) |

## What reviewers say

### VetPDA Calcs

[App page](https://appshunter.io/ios/app/vetpda-calcs/id356519283)

**Currently charting:** #124 Top Paid · Medical (US App Store)

This app offers 21 essential calculators for veterinary medicine students and professionals. It includes tools for anesthesia, fluid management, drug dosing, and more, with informative sheets explaining each calculator's use.

**Highlights:** 21 veterinary calculators, Anesthesia drug calculations, Fluid management tools, Dosing and infusion calculators, Information sheets for each calculator

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

**In-app purchases:** none


### Plumb's | Standards

[App page](https://appshunter.io/ios/app/plumbs-standards/id1556729700)

This app provides trusted veterinary clinical decision support, integrating comprehensive drug information and treatment guidance. It offers tools for diagnosis, treatment, and client education, designed for veterinary professionals.

**Highlights:** Veterinary drug and dosing information, Drug interaction checker, Conversion calculator, Diagnosis and treatment monographs, Management algorithms, Differential diagnosis lists, Client education handouts

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Super helpful
- 👍 Excellent resource
- 👍 Very helpful and easy to use
- 👍 Worth the price
- 👍 Amazing app

**What reviewers complain about**

- 🐛 Signing in issues
- 🐛 Impossible to get an answer from Support
- 💰 Disappointed - Careful before purchasing!
- 🐛 No calculator
- 🐛 Imposible to renew

**Reported bugs**

- Signing in issues
- Crashing
- Login/password reset problems
- Compatibility issues on iPad

**Requested features**

- Add calculator function
- Improve renewal/subscription management


## Frequently asked questions

### Is VetPDA Calcs free?

VetPDA Calcs costs $4.99, with no in-app purchases.

### Is Plumb's | Standards free?

Plumb's | Standards is free to download, with no in-app purchases.

### Which has better reviews, VetPDA Calcs or Plumb's | Standards?

Plumb's | Standards is rated higher. VetPDA Calcs averages 4.9 out of 5 from 16 ratings, while Plumb's | Standards averages 4.9 from 3.4K ratings.

### Do VetPDA Calcs or Plumb's | Standards have ads?

Neither VetPDA Calcs nor Plumb's | Standards shows ads.

### Which is updated more often, VetPDA Calcs or Plumb's | Standards?

VetPDA Calcs ships an update every 2 months, and Plumb's | Standards every 3 weeks. Most recently, VetPDA Calcs was updated on October 29, 2026 and Plumb's | Standards on October 27, 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.*