Comparison

Hanna Pool vs Ohm's Law+

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

Head to head
About

Hanna Pool

Features
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The Hanna Pool App is your portal to Hanna Cloud. Hanna Cloud is a web-based application that connects you to your Hanna Instruments BL family swimming pool controller. Hanna Cloud measurements and data storage are accessible through the Hanna Pool App. With the Hanna Pool App notifications are sent directly to your device. User-defined alarm values ensure that you are informed if values fall outside your limits. The dashboard provides an overview of the current status and out of range readings are clearly identified. Measurement, alarm, hold, and pump status are easily viewable. The graph allows you to view trends over the last 6, 12 or 24 hours. Log history can be easily exported as a PDF or .CSV file. pH and ORP calibration data is readily available. Register multiple devices to a single Hanna Cloud account. Multiple secondary users may also be added to your controller to monitor measurements and receive notifications.

About

Ohm's Law+

This utility app simplifies electrical calculations with a clean interface. Input any two values (voltage, current, resistance, or power) to instantly solve for the remaining ones. It also includes a resistor color code calculator and a home screen widget for quick access.

Highlights
  • Electrical calculations
  • Resistor color code calculator
  • Home screen widget
  • Sleek Liquid Glass interface
  • Accurate and fast
Read full description

Make electrical calculations effortless with Ohm’s Law+, designed for iOS 26 with a sleek Liquid Glass interface. Whether you’re a student, hobbyist, or engineer, simply enter any two known values—voltage, current, resistance, or power—and instantly solve for the rest. • Resistor Color Code Calculator – Quickly decode resistor values with an intuitive color-band layout. • Home Screen Widget – Jump straight to the calculator or resistor tool with a single tap. • Liquid Glass Design – A smooth, modern interface built for iOS 26. • Accurate. Fast. Simple. – Designed for clarity, precision, and speed. No Ads. No Clutter.

Screenshots

Hanna Pool4 screens
Ohm's Law+4 screens

Verdict

The call

The clearest difference is price: Hanna Pool at Free against Ohm's Law+'s $0.99. Hanna Pool also leads on iOS requirement (15.0 vs 26.0). On 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

CostPrice · In-app purchases · Ads · Monetization

Hanna Pool is free to download; Ohm's Law+ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 7 level
Hanna Pool versus Ohm's Law+: the parameters behind the verdict, then further details
ParameterHanna PoolOhm's Law+
PriceFree — better$0.99
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequency—Daily
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size8 MB1 MB
Age rating4+4+
DeveloperHanna Instruments, Inc.Kanz Studios

In-app purchases

None

Hanna Pool

No in-app purchases

None

Ohm's Law+

No in-app purchases

Questions

Is Hanna Pool free?
Hanna Pool is free to download, with no in-app purchases.
Is Ohm's Law+ free?
Ohm's Law+ costs $0.99, with no in-app purchases.
Do Hanna Pool or Ohm's Law+ have ads?
Neither Hanna Pool nor Ohm's Law+ shows ads.

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