Comparison

Electrical Calc Pro vs Watts 2.0

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

Head to head
About

Electrical Calc Pro

This professional electrical application calculates common electrical problems, including wire sizing, conduit sizing, and fusing based on the Canadian Electric Code. It offers advanced features for motor loads, transformers, feeders, and voltage drop calculations, making it an essential tool for electricians and engineers.

Highlights
  • Wire and conduit sizing
  • Motor and transformer load calculations
  • Voltage drop calculations
  • Panel legend creation and export
  • Allowable ampacity and derating
  • Box fill calculations
Features
Read full description

E-Calc Pro is a professional electrical application for calculating many common electrical problems. This app is an essential tool for all electricians and electrical engineers. Unlike other similar apps E-Calc not only calculates simple formulas but returns code results including wire sizing, conduit sizing, fusing, overload size, ground and bond size and much more based on the Canadian Electric Code. The features of this app are too long to list but here are a few of the key ones; - Basic construction calculator allows you to easily divide rooms for lighting in imperial or metric measurements. - Calculate any single motor or multiple motor load and get maximum overcurrent, maximum overload, minimum wire, minimum pipe, and minimum bond wire size. Store a schedule of motors for easy retrieval. - Calculate any transformer size and get KVA, FLA, pipe size, fuse and breaker size, bond size and ground size, on both primary and secondary. Easily choke down the transformer and get appropriate results for the modified demand load. - Calculate feeders for wire size, conduit size and voltage drop simultaneously. - Create panel legends of any size and easily export or print them right from your device. - Calculate the allowable ampacity of any wire type and deration situation. - Calculate maximum number of similar sized wires in a given pipe size. - Calculate pipe size required for a list of any number, size, and type of wire. - Calculate required ground and bonding sizes. - Easily calculate complicated voltage drop calculations. Get results for percentage voltage drop as well as maximum lengths of runs and wire size. Derating is also supported. - Calculate minimum burial depths for any situation including special situations including mechanical protection, under slab, and rock encased. - Calculate any box fill situation in mL and cubic inch. - Calculate recommeneded torque settings for all varieties of lugs and terminations. - Convert many common units. - Find NEMA codes and specs of receptacles. - Calculate residential single dwelling service sizes. - Easily access in app support with quick links to your tablet's email.

About

Watts 2.0

Control Watts 2.0 LED controllers with this application. Adjust lighting settings and manage your devices.

Highlights
  • Control LED controllers
  • Manage lighting settings
  • Device management
Features
Read full description

Used to control Watts 2.0 LED Controllers

Screenshots

Electrical Calc Pro4 screens
Watts 2.04 screens

Verdict

The call

The clearest difference is price: Watts 2.0 at Free against Electrical Calc Pro's $19.99. Watts 2.0 also leads on update cadence (every 2 weeks vs every 5 weeks) and ratings volume (5 vs 1). Electrical Calc Pro's advantage is rating (5.0 vs 3.0) and review sentiment (60% vs 50%). 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

Watts 2.0 is free to download; Electrical Calc Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Electrical Calc Pro holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Watts 2.0 has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Electrical Calc Pro's written reviews are positive against 50% of Watts 2.0's.

UpkeepUpdate frequency

Electrical Calc Pro ships an update every 5 weeks, Watts 2.0 every 2 weeks. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

Scorecard7 real differences · 3 level
Electrical Calc Pro versus Watts 2.0: the parameters behind the verdict, then further details
ParameterElectrical Calc ProWatts 2.0
Price$19.99Free — better
Rating5.0 (1 ratings) — better3.0 (5 ratings)
Positive reviews60.0% of reviews — better50.0% of reviews
Number of ratings15 — better
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size22 MB83 MB
Age rating4+4+
DeveloperSnappy Appz Inc.2301114 Alberta Ltd

Customer experience

Electrical Calc Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

Watts 2.0

All ratings5 ratings
Positive40.0%
Neutral20.0%
Negative40.0%
Written reviews30 reviews
Positive50.0%
Neutral3.3%
Negative46.7%

In-app purchases

None

Electrical Calc Pro

No in-app purchases

None

Watts 2.0

No in-app purchases

Questions

Is Electrical Calc Pro free?
Electrical Calc Pro costs $19.99, with no in-app purchases.
Is Watts 2.0 free?
Watts 2.0 is free to download, with no in-app purchases.
Which has better reviews, Electrical Calc Pro or Watts 2.0?
Electrical Calc Pro is rated higher. Electrical Calc Pro averages 5.0 out of 5 from 1 ratings, while Watts 2.0 averages 3.0 from 5 ratings.
Do Electrical Calc Pro or Watts 2.0 have ads?
Neither Electrical Calc Pro nor Watts 2.0 shows ads.
Which is updated more often, Electrical Calc Pro or Watts 2.0?
Electrical Calc Pro ships an update every 5 weeks, and Watts 2.0 every 2 weeks. Most recently, Electrical Calc Pro was updated on October 5, 2026 and Watts 2.0 on October 19, 2026.

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