HydroCalc Plus vs Habit Tracker & Capybara
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HydroCalc Plus
A professional tool for hydraulic engineers to calculate pressure losses in piping systems. It supports US and SI units, offers an extensive pipe material and fittings database, and includes inverse calculations for design optimization.
- Friction head loss calculation (Hazen-Williams)
- US and SI unit support
- Extensive pipe material library
- Fittings and valves database
- Inverse calculation mode
- Real-time results (velocity, losses)
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The COMPLETE version of HydroCalc, with what the free app doesn't have: the FITTINGS SELECTOR. Pick elbows, valves, tees and reducers piece by piece and the app computes minor losses for you — in the calculator, the inverse calculator and the system curve. No K-value tables, no transcription errors. ALL INCLUDED: pump power, system curve, pipe database and Darcy-Weisbach with real fluids come with the app. One purchase, no in-app purchases. Professional hydraulic engineering tool for calculating pressure losses in piping systems. Essential for engineers, plumbers, and contractors designing water distribution networks. Key Features: Calculate friction head losses using industry-standard Hazen-Williams equation Support for both US (ft, gpm, psi) and SI (m, lps, bar) units Extensive pipe material library with pre-defined roughness coefficients (C-factors) Complete fittings and valves database including elbows, tees, valves, contractions, and expansions Inverse calculations to determine optimal pipe diameter, flow rate, or length for target head loss Real-time results showing velocity, friction loss, minor losses, and total system head loss What Sets Plus Apart: Unlike basic calculators, HydroCalc Plus accounts for both major losses (pipe friction) and minor losses (fittings and valves). The app includes a comprehensive database of K-factors for various components, allowing accurate total system pressure loss calculations. Perfect For: Water supply system design Irrigation network planning HVAC piping calculations Fire protection systems Industrial fluid transport Educational purposes in hydraulic engineering Technical Capabilities: The app considers all critical factors affecting pressure loss: flow velocity, pipe diameter, internal roughness, pipe length, and fitting configurations. Materials include PVC, polyethylene, steel, cast iron, concrete, and more with accurate C-factors ranging from 120-150. Inverse Calculation Mode: Unique feature allowing backward calculations - determine required pipe size for allowable head loss, maximum flow capacity, or optimal pipe length for your system constraints. Simple, intuitive interface with instant results. No internet connection required. Professional-grade calculations in your pocket. Note: the advanced modules are available in English and Spanish.
Habit Tracker & Capybara
Build gentle routines and track progress towards your goals with a charming, stress-free habit tracker. Earn rewards for completing tasks and maintain cozy streaks with visual habit cards and home screen widgets. This app transforms self-improvement into a mindful and rewarding experience.
- Gentle routine building
- Visual habit cards
- Progress streaks
- Personalized rewards
- Home screen widgets
- Built-in templates
- Reminders
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Kapy is a kawaii habit tracker that makes progress feel calm, simple, and fun. It helps users build gentle routines, keep streaks alive, and reach goals without pressure. Instead of long lists or complex charts, Kapy uses habit cards. Each card represents a goal with a set number of completions, making progress visual and motivating. Every check-in brings users closer to their next small win, no rush, just steady growth. Kapy also allows adding personal rewards for finishing a card. A small treat, a break, or something that sparks joy, every effort deserves to be celebrated. With built-in templates, reminders, and widgets, habits can be tracked directly from the home screen. Everything is designed to keep daily progress cozy, mindful, and rewarding. Why choose Kapy? Kapy transforms habit building into a soft and positive experience. It encourages consistency, turns small actions into meaningful achievements, and brings a cute, cozy atmosphere to self-improvement. Start today and see how much progress can grow! Privacy: https://me.dmansodev.com/kapy-privacy-policy Terms: https://me.dmansodev.com/kapy-terms
Screenshots
Verdict
The clearest difference is price: Habit Tracker & Capybara at Free against HydroCalc Plus's $6.99. Habit Tracker & Capybara also leads on update cadence (every 9 days vs every 3 weeks). HydroCalc Plus's advantage is iOS requirement (15.1 vs 18.0). On rating, review sentiment, ratings volume and ads 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
Habit Tracker & Capybara is free to download; HydroCalc Plus costs $6.99 up front. HydroCalc Plus sells 4 one-off in-app purchases and Habit Tracker & Capybara sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for HydroCalc Plus against 5.0 for Habit Tracker & Capybara. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
HydroCalc Plus ships an update every 3 weeks, Habit Tracker & Capybara every 9 days. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.
| Parameter | HydroCalc Plus | Habit Tracker & Capybara |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 34 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Transparent Blue Water LLC | David Manso |
Customer experience
HydroCalc Plus
Habit Tracker & Capybara
In-app purchases
HydroCalc Plus
- Pump Power Calculator$1.99
- System Curve Generator$1.99
- Pipe Database$1.99
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- Industrial Fluids Pack$2.99
Habit Tracker & Capybara
- Kapy PRO Monthly$1.991 Month
- Kapy PRO Yearly3 Days trial$6.991 Year
- Kapy PRO Lifetime$3.99
Questions
Is HydroCalc Plus free?
Is Habit Tracker & Capybara free?
Which has better reviews, HydroCalc Plus or Habit Tracker & Capybara?
Do HydroCalc Plus or Habit Tracker & Capybara have ads?
Which is updated more often, HydroCalc Plus or Habit Tracker & Capybara?
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