Comparison

PCalc Lite vs Fieldwatt Electrician NEC Calc

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

Head to head
About

PCalc Lite

This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.

Highlights
  • Optional RPN mode
  • Multiple undo and redo
  • Unit conversions and constants
  • Two stylish themes
  • Apple Watch app
Features
Read full description

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.PCalc Lite is a fully functional and free taste of our very popular scientific calculator. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, as well as two stylish themes and our highly praised design. A great choice for your new iPad! If you like what you see, the full version has many more settings and themes, a paper tape, engineering and scientific notation, and full support for hexadecimal, octal, and binary calculations. You can also now purchase extra features directly from inside PCalc Lite. Buy them individually, or buy everything. Includes an Apple Watch app, so you can calculate on your wrist!

About

Fieldwatt Electrician NEC Calc

Features
Read full description

Five NEC calculators that work with no signal. Fieldwatt is a field calculator suite for electricians, apprentices, and inspectors. Every calculation runs on the phone — no account, no network, no waiting. Open it in a crawlspace, a mechanical room, or a job trailer with one bar and it still answers instantly. WHAT'S INSIDE • Voltage Drop — 1-phase and 3-phase, copper or aluminum, checked against the 3% branch / 5% total recommendation. When a run fails, it names the size that passes. • Wire Ampacity — minimum conductor from NEC Table 310.16, with the 125% continuous-load multiplier applied where it belongs. • Conduit Fill — minimum EMT, PVC-40, or RMC for your conductor count, per Chapter 9 Tables 1, 4, and 5. • Box Fill — total volume required per NEC 314.16, counting conductors, devices, clamps, and grounds the way the article does. • Conduit Bending — offset multipliers, mark spacing, shrink, and 90° stub take-up. IT TELLS YOU THE RULE, NOT JUST THE NUMBER Most calculators hand back a figure and leave you to defend it. Fieldwatt hands back the figure and the article behind it: • Choose the 90°C column and it warns you that 90°C is a derating column. Per NEC 110.14(C) terminations are listed for 60°C or 75°C, and sizing off 90°C is how a conductor passes arithmetic and fails inspection. • Mark a load continuous and it sizes at 125% up front, instead of reporting a code requirement as an afterthought. • Upsize for voltage drop and it reminds you that NEC 250.122(B) makes you upsize the equipment grounding conductor in the same proportion. Every result carries its citation — 310.16, 314.16, 250.122(B), Chapter 9 Tables 1/4/5 — so you can check the work against the book. BUILT FOR THE JOBSITE • Fully offline. The whole app ships on the device. • No account required to calculate. • No ads. • Large type and big touch targets, for gloves and bad light. • Dark by default, because most of this work happens in the dark. FREE All five calculators are free. Signing in is optional and only adds saved jobs and material lists for accounts that already have them. NEC 2023. For guidance only — verify against the code edition your AHJ enforces and any local amendments.

Screenshots

PCalc Lite4 screens
Fieldwatt Electrician NEC Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Fieldwatt Electrician NEC Calc at none against PCalc Lite's 10. On price, ads, device support and iOS requirement 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. PCalc Lite sells 10 one-off in-app purchases. Fieldwatt Electrician NEC Calc asks for nothing beyond the download.

Scorecard1 real difference · 9 level
PCalc Lite versus Fieldwatt Electrician NEC Calc: the parameters behind the verdict, then further details
ParameterPCalc LiteFieldwatt Electrician NEC Calc
PriceFreeFree
Rating4.4 (214 ratings) — better—
Positive reviews82.5% of reviews—
Number of ratings214 — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size79 MB3 MB
Age rating4+4+
DeveloperTLA Systems Ltd.VectraSEO LLC

Bugs and requests

PCalc Lite

Reported bugs

3 issues
  • Calculations sometimes produce unexpected results
  • Upside-down text censorship feature is problematic
  • Purchased features not always accessible on Apple Watch

Requested features

4 requests
  • Add option to display thousands separators
  • Implement a history function to review past calculations
  • Provide more customization options for the widget
  • Add support for sexagesimal angle input and conversion

Fieldwatt Electrician NEC Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PCalc Lite

One-time10
  • Theme Pack$0.99
  • Power User Pack$0.99
  • Multiple Line Pack$0.99
Show 7 more
  • Conversion Pack$0.99
  • Small Tip$0.99
  • Medium Tip$1.99
  • Programmer Pack$2.99
  • Engineer Pack$2.99
  • Large Tip$4.99
  • Complete Pack$9.99
None

Fieldwatt Electrician NEC Calc

No in-app purchases

Questions

Is PCalc Lite free?
PCalc Lite is free to download, with in-app purchases available.
Is Fieldwatt Electrician NEC Calc free?
Fieldwatt Electrician NEC Calc is free to download, with no in-app purchases.
Do PCalc Lite or Fieldwatt Electrician NEC Calc have ads?
Neither PCalc Lite nor Fieldwatt Electrician NEC Calc shows ads.

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