Plutocalc+ Water
Engineering calculator
$4.99 · Designed for iPad. Not verified for macOS.
Plutocalc is the most complete and popular problem solver suite for water treatment, wastewater, hydraulics, environmental chemistry and unit conversions.
Plutocalc+ is a premium version of the free Plutocalc packed some extras. For iOS, only the premium version is available.
Features:
- 105 solvers
- 4498+ different calculations
- Self explanatory diagrams
- Internal databases for chemicals and standards
- Results as you type, nothing is faster than that!
- Multiple languages: English, Portuguese and Spanish
- Available for multiple platforms
- 100% offline, no data connection required
- Advertisement free
NOTE: If after the update the program loads to a blank screen, just reinstall to fix.
Solver list:
Conversions
- Angle
- Area
- Conductivity and resistivity
- Density and concentration
- Energy
- Flow - mass
- Flow - volumetric
- Flux and rates
- Forces
- Hardness in water
- Length
- Mass
- Power
- Pressure
- Speed
- Temperature
- Time
- Volume
Geometry
- Buffer tank capacity
- Cylinder volume
- Cone volume
- Cube volume
- Circle properties (radius, diameter, perimeter and area)
- Horizontal cylindrical tank volume
- Triangle properties with sides/angles determination
- Municipal plants flow estimation
- Nominal pipe sizes and wall thickness
- Sieve sizes according
- Rainfall volume
Energy and power
- Head loss in pipes
- Open channels or partially filled pipes
- Orifice plates with incompressible fluids
- Parshall flumes flow measurement
- Rectangular flumes flow measurement
- Flow adjustment for dosing/metering pumps
- Pump power and energy consumption
- Blowers and compressors power and energy consumption
- Mixing velocity gradient
- Reynolds number and speed
Contaminants
- Boiler water quality and blowdown
- Periodic table of elements with oxidation states
- Ionic Balance and Conductivity
- CO2 conductivity in pure water
- TOC, COD and KMnO4 relations
- Langlier Saturation Index - LSI
- Ryznar Stability Index - RSI
- Silt Density Index - SDI
- Modified Fouling Index - MFI
- Sludge Volume Index - SVI
Solutions
- Chemical dosing flow, mass and concentrations
- Dry chemical dosing flow
- Chemical solutions density database
- Water properties (viscosity, density)
- Gases properties (density and molecular weight)
- Oxygen solubility in water
- Multiple streams blending
- Specific gravity, Baumé, Brix and API relations
Adsorption and Ion Exchange
- Sorption/Exchange capacity
- Empty Bed Contact Time and BV/h
- Ion Exchange regeneration
- Ion Exchange softener design
Filters and membranes (Reverse Osmosis, Ultrafiltration and Nanofiltration)
- Cylindrical filter rate and speed
- Microfiltration / Ultrafiltration comparison and normalization
- Reverse Osmosis membranes and datasheets comparison
- Reverse Osmosis plant normalization and performance comparison
- Reverse Osmosis / NF skid design
- Recovery
- Recovery for membranes in series
- Normalized permeability
- Granular media head loss (sand, resins, anthracite, carbon and custom)
- Granular media backwash expansion rate
Reactions
- pH equilibrium for: Ammonia, Sulfates, Boric Acid, Sulfides, Silicic Acid, Phosphates and Nitrous Acid
- Equilibrium for Carbonates with temperature dependence
- Disinfection with Chlorine, Chlorine Dioxide, Chloramines and Ozone
- Disinfection with Chlorine for Giardia Cysts
- Disinfection with UV
- Iron oxidation and precipitation
- Manganese oxidation and precipitation
- Sludge from chemicals
- Food-to-microorganisms ratio - F/M
- Ultimate BOD
Clarifiers
- Surface loading rate - circular
- Surface loading rate - rectangular
- Hydraulic retention time - HRT
- Solids retention time - SRT
- Solids loading rate
- Volumetric solids loading rate
- Return activated sludge recycle - RAS
- Discrete sedimentation
- Sludge concentration and mass
- Sludge age
Finance
- Ordinary annuity
- Annuity due
- Compound annual growth rate - CAGR
- Interest rate conversions
- Simple interest
Ratings & Reviews
- New: chemical dilution solver
- New: chemical dilution solver in the molar form
- New: database of molecular weight for 151 substances (molar dilution model)
- New: deep search expanded to all Plutocalc versions
- New: diagrams for chemical dosing
- New: previous field shortcut (Plutocalc+ exclusive feature)
- Improved: back button now navigates directly from/to input fields
- Improved: conversions navigation by clicking on the unit
- Improved: number rounding and formatting
- Improved: unit conversions precision
- Improved: performance: less computing cycles for most of the calculations
- Improved: sections layout
- Improved: standardization of symbols for physical quantities (density, viscosity, etc...)
- Fixed: search results box positioning in some devices
- Fixed: menu using two lines in smaller screens or devices with increased font size
- Fixed: menu bar too thick or misaligned in Android devices
- Fixed: section navigation visibility
The developer, Daniel Peig, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daniel Peig
- Size
- 4.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Daniel BP
