# Iv vs Plumb's | Standards

The clearest difference is price: Plumb's | Standards at Free against Iv's $1.99. Plumb's | Standards also leads on update cadence (every 3 weeks vs every 10 months). Iv's advantage is iOS requirement (11.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Plumb's | Standards is free to download; Iv costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Iv ships an update every 10 months, Plumb's | Standards every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Iv | Plumb's | Standards |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.9 (3.4K ratings)](https://appshunter.io/ios/app/plumbs-standards/id1556729700/reviews)** |
| Number of ratings | — | **3.4K** |
| Positive reviews | — | 55.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | — | Subscription |
| Size | 7 MB | 62 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Rimon](https://appshunter.io/developer/590338647) | [Brief Media](https://appshunter.io/developer/1018418856) |

## What reviewers say

### Iv

[App page](https://appshunter.io/ios/app/iv-calculator/id1031858167)

**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 Iv free?

Iv costs $1.99, with no in-app purchases.

### Is Plumb's | Standards free?

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

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

Neither Iv nor Plumb's | Standards shows ads.

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

Iv ships an update every 10 months, and Plumb's | Standards every 3 weeks. Most recently, Iv was updated on November 1, 2026 and Plumb's | Standards on November 3, 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.*