# Vetcalculators vs Sleip

The clearest difference is in-app purchases: Sleip at none against Vetcalculators's 1. Sleip also leads on update cadence (every 3 weeks vs every 3 months) and review sentiment (60% vs 45%). Vetcalculators's advantage is chart position (#45 vs unranked) and ratings volume (606 vs 108). On price, rating, ads and iOS requirement there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Vetcalculators against 4.8 for Sleip. That said, the two scores are not equally well evidenced: Vetcalculators has 606 ratings behind it against 108, so its average is the more settled of the two. Written reviews are what separate them: 45% of Vetcalculators's written reviews are positive against 60% of Sleip's.

Vetcalculators ships an update every 3 months, Sleip every 3 weeks. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Vetcalculators | Sleip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (606 ratings)](https://appshunter.io/ios/app/vetcalculators/id1403466061/reviews) | **[4.8 (108 ratings)](https://appshunter.io/ios/app/sleip/id1583194375/reviews)** |
| Number of ratings | **606** | 108 |
| Positive reviews | 45.2% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Subscription | **Free** |
| Best chart rank | **#45** | — |
| Size | 85 MB | 207 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [LifeLearn USA](https://appshunter.io/developer/1642768183) | [Sleip Ai AB](https://appshunter.io/developer/1528755130) |

## What reviewers say

### Vetcalculators

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

**Currently charting:** #45 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


### Sleip

[App page](https://appshunter.io/ios/app/sleip/id1583194375)

This app uses AI and video analysis to detect and measure gait asymmetries in horses. Professionals can record movements with their iPhone to receive detailed analysis, including slow-motion video and quantified measurements, in minutes. It supports lameness evaluations, performance tracking, and rehabilitation assessments.

**Highlights:** AI-powered gait asymmetry detection, Video-based analysis from iPhone, Quantified measurements and slow-motion video, Diagnostic analgesia annotation (Pro Vet), Compensatory pattern detection (Pro Vet), Gait monitoring for progress tracking, Sensor-free workflow

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vetcalculators free?

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

### Is Sleip free?

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

### Which has better reviews, Vetcalculators or Sleip?

Sleip is rated higher. Vetcalculators averages 4.7 out of 5 from 606 ratings, while Sleip averages 4.8 from 108 ratings.

### Do Vetcalculators or Sleip have ads?

Neither Vetcalculators nor Sleip shows ads.

### Which is updated more often, Vetcalculators or Sleip?

Vetcalculators ships an update every 3 months, and Sleip every 3 weeks. Most recently, Vetcalculators was updated on September 27, 2026 and Sleip on September 24, 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.*