# Vetcalculators vs Plumb's | Standards

The clearest difference is in-app purchases: Plumb's | Standards at none against Vetcalculators's 1. Plumb's | Standards also leads on update cadence (every 3 weeks vs every 3 months) and rating (4.9 vs 4.7). Vetcalculators's advantage is chart position (#44 vs unranked). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Vetcalculators sells 1 in-app purchase, starting at $3.99 per month. Plumb's | Standards asks for nothing beyond the download.

Plumb's | Standards holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Plumb's | Standards has 3.3K ratings behind it against 606, so its average is the more settled of the two. Written reviews point the same way: 45% of Vetcalculators's written reviews are positive against 57% of Plumb's | Standards's.

Vetcalculators ships an update every 3 months, Plumb's | Standards every 3 weeks. Both last shipped on September 22, 2026.

## The numbers

| Metric | Vetcalculators | Plumb's | Standards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (606 ratings)](https://appshunter.io/ios/app/vetcalculators/id1403466061/reviews) | **[4.9 (3.3K ratings)](https://appshunter.io/ios/app/plumbs-standards/id1556729700/reviews)** |
| Number of ratings | 606 | **3.3K** |
| Positive reviews | 45.2% of reviews | **57.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Subscription | Subscription |
| Best chart rank | **#44** | — |
| Size | 85 MB | 62 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [LifeLearn USA](https://appshunter.io/developer/1642768183) | [Brief Media](https://appshunter.io/developer/1018418856) |

## What reviewers say

### Vetcalculators

[App page](https://appshunter.io/ios/app/vetcalculators/id1403466061)

**Currently charting:** #44 Top Grossing · Medical (US App Store)

This app provides veterinarians and staff with a comprehensive suite of calculators for drug dosages, medical measurements, and patient assessments. It also includes a wide range of veterinary references for quick access to essential information.

**Highlights:** Drug dose calculators, Emergency drug dosages, Fluid therapy rates, Toxicity calculators, Pet age calculator, Veterinary references, Unit conversion

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vetcalculators Subscription | $3.99 | per month |

**What reviewers like**

- 🚀 Saves significant time on drug calculations
- ✅ Accurate dosage calculations reduce errors
- 📚 Comprehensive reference library with multiple resources
- 💊 Useful for emergency cases and anesthesia management
- 🔧 Highly customizable with favorites and personal dosages

**What reviewers complain about**

- 💰 Switched from one-time purchase to monthly subscription
- 🔐 No grandfathering for previous paid users
- 🐛 App frequently freezes or crashes on opening
- 🐛 Unresponsive UI elements that require repeated tapping
- 🌐 Requires internet connection to function

**Reported bugs**

- App crashes or closes immediately upon opening
- UI elements unresponsive to clicks and taps
- Drug database fails to load after updates
- Data not persisting when app order is changed
- New drugs and concentrations not saving properly

**Requested features**

- Support for additional animal species beyond dogs and cats
- Gram weight unit option in addition to lbs and kgs
- Cross-device data synchronization
- Offline functionality without internet requirement
- Student pricing or free tier option


### 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 Vetcalculators free?

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

### Is Plumb's | Standards free?

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

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

Plumb's | Standards is rated higher. Vetcalculators averages 4.7 out of 5 from 606 ratings, while Plumb's | Standards averages 4.9 from 3.3K ratings.

### Do Vetcalculators or Plumb's | Standards have ads?

Neither Vetcalculators nor Plumb's | Standards shows ads.

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

Vetcalculators ships an update every 3 months, and Plumb's | Standards every 3 weeks. Most recently, Vetcalculators was updated on September 22, 2026 and Plumb's | Standards on September 22, 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.*