Pool Doctor vs Veterinary Notebook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pool Doctor
This powerful digital tool helps pool professionals and enthusiasts maintain their pools. Input your chemical readings, and it will provide precise instructions on what chemicals to add and why, supporting various pool types and units of measurement.
- Chemical level adjustment (chlorine, pH, alkalinity, etc.)
- Supports regular, salt-water, and bromine pools
- Multiple unit of measurement options
- Customizable ideal ranges and chemicals
- Saves reading and treatment records
- Langelier Index calculation
- Shock calculator
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Thousands of professionals across the world already use Pool Doctor to keep their pools blue... you should too! This app is not for total beginners -- It is a powerful digital tool for professionals or enthusiasts. But don't worry! Instructions are constantly scrolling across the screen. Just enter whatever chemical readings you prefer using any test kit you own, and Pool Doctor will tell you exactly what chemicals to put into your pool and why. With Pool Doctor, you can adjust the chlorine, bromine, salt, pH, total alkalinity, calcium hardness, and even the cyanuric acid levels in all of your pools. You can even configure the ideal ranges and chemicals used to treat the pools (see screenshots). Pool Doctor gives all results and explanations in pounds, ounces, grams, kilograms, liters, gallons, or even in the number of scoops (you can enter custom scoop sizes); and changing units is as easy as pressing a button! This app supports regular, salt-water, or even bromine pools. Pool Doctor now saves basic reading and treatment records for all of your pools! Pool Doctor only shows you readings that apply to your pool type, so there is no unnecessary confusion! Pool Doctor will now calculate the Langelier Index automatically if you take all of the required readings! Pool Doctor now includes a shock calculator! Just enter the free and total chlorine levels, and Pool Doctor will automatically calculate how much of your preferred shock chemical is necessary to bring your pool to breakpoint chlorination.
Veterinary Notebook
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The ultimate toolkit for veterinary medicine. This app features: Basic Translator Notebook Anesthesia monitoring sheet Unit Conversion Calculator CRI calculators for metoclopramide, KCl, and dextrose. Custom calculators for dose, tablets to dispense, CRI's for Reglan, KCl, and dextrose, and transfusion calculator This is a great app for vet assistance, technicians, and doctors in the field. This is not a substitute for medical consult and advice. If you, an animal, or someone you know needs medical advice, please seek a licensed medical professional. Veterinary Notebook is not liable for user error.
Screenshots
Verdict
The clearest difference is price: Veterinary Notebook at $1.99 against Pool Doctor's $19.99. Pool Doctor's advantage is iOS requirement (11.0 vs 17.5). On update cadence, ads, in-app purchases and device support 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
Pool Doctor costs $19.99 and Veterinary Notebook $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pool Doctor ships an update every 2 months, Veterinary Notebook every 3 months. The most recent releases landed on October 7, 2026 and May 14, 2026 respectively.
| Parameter | Pool Doctor | Veterinary Notebook |
|---|---|---|
| Price | $19.99 | $1.99 — better |
| Rating | 4.4 (134 ratings) — better | — |
| Positive reviews | 67.8% of reviews | — |
| Number of ratings | 134 — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 12+ |
| Developer | Gazzini Ventures | Summer Youngberg |
Bugs and requests
Pool Doctor
Reported bugs
9 issues- App crashes after entering readings
- Phone keyboard won't close, preventing navigation
- Entered values change automatically (pH decreases, chlorine increases)
- Chemical settings don't save or remember user preferences
- Recommendations ignore user-specified chemical concentrations
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- Metric calculations don't work properly
- App requires internet connection despite being offline-capable
- Support page/links no longer available
- Inconsistent shock chemical recommendations despite selection changes
Requested features
13 requests- Customizable input field order to match test kit order
- Support for Baquacil pool products
- Cyanuric acid reading support
- Ability to select specific chemical types (liquid vs powdered chlorine)
- Salt level adjustment based on salt water generator (SWG) ranges
Show 8 moreShow fewer
- Support for additional chemicals like Borax for pH adjustment
- Water temperature and wind data tracking
- Graphing and historical data visualization
- Multi-user sync for shared pool maintenance
- Pool volume estimator tool
- Support for hot tubs and spas
- Metric-only interface for non-US users
- More detailed information on calcium hardness and other parameters
Veterinary Notebook
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Pool Doctor
No in-app purchases
Veterinary Notebook
No in-app purchases
Questions
Is Pool Doctor free?
Is Veterinary Notebook free?
Do Pool Doctor or Veterinary Notebook have ads?
Which is updated more often, Pool Doctor or Veterinary Notebook?
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