# NOAH Compendium vs Vetcalculators

The clearest difference is review sentiment: NOAH Compendium at 100% against Vetcalculators's 43%. NOAH Compendium also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.7). Vetcalculators's advantage is ratings volume (618 vs 1) and chart position (#62 vs unranked). On price, update cadence, ads 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. NOAH Compendium asks for nothing beyond the download.

NOAH Compendium holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Vetcalculators has 618 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of NOAH Compendium's written reviews are positive against 43% of Vetcalculators's.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | NOAH Compendium | Vetcalculators |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/noah-compendium/id1173339300/reviews)** | [4.7 (618 ratings)](https://appshunter.io/ios/app/vetcalculators/id1403466061/reviews) |
| Number of ratings | 1 | **618** |
| Positive reviews | **100.0% of reviews** | 43.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Subscription |
| Best chart rank | — | **#62** |
| Size | 78 MB | 83 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NOAH Ltd](https://appshunter.io/developer/1173339299) | [LifeLearn USA](https://appshunter.io/developer/1642768183) |

## What reviewers say

### NOAH Compendium

[App page](https://appshunter.io/ios/app/noah-compendium/id1173339300)

Access a comprehensive database of over 1,000 UK authorised animal medicines, including full product information and datasheets. Scan barcodes for quick access to vital details like dosing, warnings, and withdrawal periods. This tool aids responsible prescribing and safe administration of veterinary medicines.

**Highlights:** 1,000+ animal medicine listings, Dosing, warnings, and withdrawal periods, Datamatrix barcode scanner, Search by medication, manufacturer, GTIN, Offline access to datasheets, Notes and bookmarks for datasheets

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

**In-app purchases:** none


### Vetcalculators

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

**Currently charting:** #62 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


## Frequently asked questions

### Is NOAH Compendium free?

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

### Is Vetcalculators free?

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

### Which has better reviews, NOAH Compendium or Vetcalculators?

NOAH Compendium is rated higher. NOAH Compendium averages 5.0 out of 5 from 1 ratings, while Vetcalculators averages 4.7 from 618 ratings.

### Do NOAH Compendium or Vetcalculators have ads?

Neither NOAH Compendium nor Vetcalculators shows ads.

### Which is updated more often, NOAH Compendium or Vetcalculators?

NOAH Compendium ships an update every 2 months, and Vetcalculators every 2 months. Most recently, NOAH Compendium was updated on November 2, 2026 and Vetcalculators on November 2, 2026.

---

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