Vetcalculators vs OneUnit+ Pets
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vetcalculators
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.
- Drug dose calculators
- Emergency drug dosages
- Fluid therapy rates
- Toxicity calculators
- Pet age calculator
- Veterinary references
- Unit conversion
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The Ultimate Veterinary Calculator App Vetcalculators is a Monthly Subscription. First Month is Free Vetcalculators is the number one Veterinary Calculator App for veterinarians, veterinary technicians, and staff. With Vetcalculators, one can quickly and easily calculate a variety of veterinary dosages and measurements. Vetcalculators includes calculators for: • Popup Drug Dose Calculator with ~200 veterinary drugs included • Emergency Drug dosage calculator • Anesthetic, Antibiotic and General drug dosage calculators • CRI (constant rate infusions) calculators • Fluid therapy rates • Blood glucose curve generator • Canine and Feline Calorie calculator • Pain score calculators • Chocolate toxicity • Rodenticide toxicity • Xylitol toxicity • Poisonous Plants • Blood transfusion volumes • Pet age and pregnancy calculator • Blood pressure • Trauma Triage scores • Modified Glasgow Coma score • Cushing diagnostic score • Unit conversion Vetcalculators also includes a variety of veterinary references, including: • Drug labels • IRIS stages • Pain scales • Normal lab values • Heartworm treatment protocols • Lab test protocols • Microchip lookup • Vertebral heart score • Body condition score charts • ACVIM Mitral Valve Disease 2019 Consensus Guidelines • ACVIM Feline Cardiomyopathy 2020 Consensus Guidelines • Dental charts • Feline and Canine AAHA Vaccination Guidelines • Flea and tick product information • Dog and cat breed search • RECOVER Guidelines • Document and QR code scanning Designed for Veterinarians by a Veterinarian, Vetcalculators is a valuable resource for all veterinarians, veterinary technicians, nurses, and staff. It can be used to calculate a variety of veterinary drug dosages, medical calculations, and measurements quickly and easily. The app also includes a variety of veterinary medical references. Download Vetcalculators today and start providing the best possible care for your patients! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
OneUnit+ Pets
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Create a profile for your blood donor hero, follow their donation journey, and celebrate the lifesaving impact of every visit. From their first screening to every unit donated, OneUnit+ keeps pet parents connected to the community that makes transfusion medicine possible. One donation can create multiple lifesaving products that reach further than you think. Behind every transfusion is a donor. Your pet could be one of them.
Screenshots
Verdict
The clearest difference is in-app purchases: OneUnit+ Pets at none against Vetcalculators's 1. OneUnit+ Pets also leads on update cadence (weekly vs every 2 months). Vetcalculators's advantage is chart position (#67 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Vetcalculators sells 1 in-app purchase, starting at $3.99 per month. OneUnit+ Pets asks for nothing beyond the download.
Vetcalculators ships an update every 2 months, OneUnit+ Pets weekly. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.
| Parameter | Vetcalculators | OneUnit+ Pets |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (615 ratings) — better | — |
| Positive reviews | 43.2% of reviews | — |
| Number of ratings | 615 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Best chart rank | #67 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 83 MB | 51 MB |
| Age rating | 17+ | 17+ |
| Developer | LifeLearn USA | National Veterinary Associates Inc. |
Bugs and requests
Vetcalculators
Reported bugs
8 issues- 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
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- Subscription charges reappearing after app reinstallation
- Recurring charges despite cancellation
- Inconsistent functionality across different sessions
Requested features
8 requests- 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
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- Ability to highlight/select individual drug line items
- Improved drug order saving functionality
- Free or freemium version with basic features
OneUnit+ Pets
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Vetcalculators
- Vetcalculators Subscription1 Month trial$3.991 Month
OneUnit+ Pets
No in-app purchases
Questions
Is Vetcalculators free?
Is OneUnit+ Pets free?
Do Vetcalculators or OneUnit+ Pets have ads?
Which is updated more often, Vetcalculators or OneUnit+ Pets?
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