Comparison

HydroniCalc vs Solar Pump

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HydroniCalc

Features
Read full description

HydroniCalc brings together 23 hydronic calculators for heating engineers and installers of water-based heating systems. Everything runs in metric units, offline, and without an account. The calculators are grouped into four families: • Basic hydraulics and pipework: power, flow and temperature difference, diameter and velocity, linear and fitting pressure losses. • Valves, balancing and circulator: the Kv / flow / pressure-drop relationship, valve sizing, balancing, and the pump operating point. • Pressurization, volumes and separation: fill pressure, water expansion, expansion vessel, and system volumes. • Radiators and underfloor heating: radiator output correction, sizing, and underfloor loop length. Each calculator shows the values to enter and displays the result as soon as the required data is valid. An info button explains the purpose of the calculation, the expected inputs, the method, the results, and the usage limits. Built-in Kv tables: look up the Kv values published by manufacturers (manufacturer, product, and generation), then copy a value to paste into your calculation. The tables never fill a calculation automatically; the value is always typed or pasted into the field. Recent calculations: your ten most recent successful calculations are stored locally, so you can find them again and resume them with their values. Eleven calculators are free to use. A single, non-subscription purchase permanently unlocks the other twelve for the Apple account used. If a purchase isn’t recognized, “Restore Purchases” asks the App Store to sync it again.

About

Solar Pump

Features
Read full description

Solar Pump sizes battery-less solar pumping systems (direct to tank), built for the field. Tell it how much water you need and the head, and it computes the solar array size and the pump class — no need to know panels or electricity. WORKS OFFLINE All the math is local. No signal, no data needed — use it at the well, on the farm, anywhere. WHAT IT COMPUTES • The solar array needed (Wp / kW) • Suggested pump power in kW and HP • Design flow and pipe velocity • Total dynamic head (TDH) from your pipe and static head • The suggested pump class for your duty point • Daily system energy SIZED FOR THE WORST MONTH The system is sized on the peak sun hours of your region's lowest-radiation month, so it delivers water year-round — even in the cloudiest season. ESTIMATE YOUR WATER DEMAND Not sure of your m³/day? The app estimates it for you: • Livestock: dairy and beef cattle, pigs, poultry, sheep and goats, and more • Crops: by area and irrigation method (drip, sprinkler, furrow) Or enter the daily volume directly. 21 COUNTRIES, 3 LANGUAGES Available across all of Latin America plus Brazil, Australia and the United States — 21 countries, each with its region's real solar resource (NASA POWER, 20-year climatology). Switch between English, Spanish and Portuguese anytime. ADVANCED SETTINGS Fine-tune the pump-and-motor efficiency, array losses (derate) and well drawdown to match your case. Solar Pump, by Transparent Blue Water. For preliminary sizing: always verify results with engineering judgment.

Screenshots

HydroniCalc4 screens
Solar Pump4 screens

Verdict

The call

The clearest difference is in-app purchases: Solar Pump at none against HydroniCalc's 1. Solar Pump also leads on iOS requirement (15.1 vs 17.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HydroniCalc sells 1 one-off in-app purchase. Solar Pump asks for nothing beyond the download.

Scorecard2 real differences · 4 level
HydroniCalc versus Solar Pump: the parameters behind the verdict, then further details
ParameterHydroniCalcSolar Pump
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size7 MB25 MB
Age rating4+4+
DeveloperEric ChmaraTransparent Blue Water LLC

In-app purchases

1 purchases

HydroniCalc

One-time1
  • Unlock All Calculators$12.99
None

Solar Pump

No in-app purchases

Questions

Is HydroniCalc free?
HydroniCalc is free to download, with in-app purchases available.
Is Solar Pump free?
Solar Pump is free to download, with no in-app purchases.
Do HydroniCalc or Solar Pump have ads?
Neither HydroniCalc nor Solar Pump shows ads.

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