Comparison

Wattson vs CuCalc

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

Head to head
About

Wattson

Features
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Stop guessing. Stop scrolling through ads. Stop paying monthly for a calculator. Wattson is two tools in one app: 15 precision electrical calculators with an AI assistant that actually runs them, and a project manager for your jobs β€” clients, photos, materials, estimates and payments. Built for electricians and engineers who work in the field, not the ones designing the app store. AI ASSISTANT β€” ANSWERS YOU CAN TRUST Other apps wrap a chatbot and call it AI. Wattson's AI runs your actual calculators β€” cable sizing with full derating, voltage drop, breaker coordination β€” and returns verified results citing the exact IEC or NEC code section. Not opinions. Math. Use voice input when your hands are full. Speak your question, get a verified answer β€” hands-free on the job site. PROJECT MANAGEMENT β€” EVERY JOB IN ONE PLACE β€’ Clients β€” name, phone and address; tap to call or open in maps β€’ Job status β€” active, completed or archived; search all your projects β€’ Photos β€” before, after and progress shots; draw on photos to mark up the work β€’ Notes β€” typed or by voice β€’ Materials β€” quick-add common electrical parts, quantities and prices; export the list as PDF β€’ Estimates β€” materials plus labor hours and rate; export a PDF to send to your client β€’ Payments β€” cash, bank transfer or card; see quoted, paid, remaining and profit per job β€’ Documents β€” keep files with the job β€’ Sign in to back up your projects and sync them across devices SMART CABLE SIZING Full derating factor analysis (Ca, Cg, Ci) per IEC 60364 β€” installation method, conductor material, insulation type, ambient temperature, and grouped circuits. PRO CALCULATORS β€’ Smart Cable Sizing β€” full derating factors β€’ Voltage Drop β€” single-phase and 3-phase β€’ Breaker Sizing β€” Ib ≀ In ≀ Iz protection coordination β€’ Motor Calculator β€” FLC, starting current, protection β€’ Short Circuit (Ik) β€” IEC 60909 fault current β€’ Earth Fault Loop (Zs) β€” loop impedance testing β€’ Power Calculator β€” P, Q, S, cos Ο† β€’ Power Factor Correction β€” capacitor bank sizing β€’ Wire Sizing β€” AWG and mmΒ² with capacity tables β€’ Conduit Fill β€” IEC fill limits β€’ Box Fill β€” NEC 314.16 volume calculations β€’ Dwelling Load β€” NEC Article 220 residential loads FREE β€” NO CATCH β€’ Ohm's Law β€” V, I, R, P solver β€’ Unit Converter β€” AWG, kW, HP, Β°C β€’ LED Color Temperature β€’ Wiring Color Codes β€” IEC 60446 standards β€’ IP Rating Decoder β€” IEC 60529 β€’ Installation Heights β€’ Wiring Diagrams β€” 12 interactive circuit diagrams β€’ Full AI assistant with voice input WIRING DIAGRAMS 12 professional interactive circuit diagrams β€” 6 for IEC and 6 for NEC. Color-coded wires per IEC 60446 and NFPA 70, component labels, installation notes, and regulatory references. Pinch to zoom, tap to explore. DUAL STANDARD SUPPORT Switch between IEC 60364 and NEC/NFPA 70 with one tap. Every calculation cites the applicable code section. Whether you wire to European or American standards β€” one app covers both. PDF REPORTS Export PDF reports for cable sizing, box fill, dwelling load, materials lists and estimates. Hand them to inspectors, clients, or keep them for your records. 8 LANGUAGES English, German, French, Spanish, Italian, Polish, Portuguese, and Croatian. The AI responds in your chosen language. NO ADS. NO SUBSCRIPTIONS. NO $10/MONTH "AI TAX." Download free with the free tools above, the full AI assistant and wiring diagrams. Unlock all Pro calculators and project management with a single purchase. No recurring fees. No ads. No paywalled NEC editions. Ever. WHY ELECTRICIANS SWITCH TO WATTSON β†’ AI that runs real calculations, not a chatbot wrapper β†’ Calculators and job management in one app β†’ Estimates and payment tracking for every job β†’ Voice input β€” hands-free on the job site β†’ Full derating factors other apps skip entirely β†’ IEC and NEC in one app β€” not two separate purchases β†’ PDF reports for inspectors, clients and documentation β†’ No ads, no subscription β†’ 8 languages and dark mode Wattson. The electrical toolbox professionals trust.

About

CuCalc

Read full description

CuCalc: Electrical Cable Sizing & Project Management Professional electrical engineering at your fingertips. Generate professional technical reports instantly. CuCalc is the ultimate all-in-one tool for electricians, engineers, and contractors to handle accurate cable sizing, voltage drop calculations, and automated Bill of Materials (BOM) management on-site or in the office. Try it nowβ€”generate your first professional PDF report completely free! WHY CHOOSE CUCALC? β€’ Stop using manual spreadsheets. CuCalc calculates AND manages. β€’ Automatically aggregates your project bill of materials. β€’ Built-in safety warnings prevent mechanical strength and compliance errors. β€’ Saves hours of manual administrative procurement work. KEY FEATURES: β€’ SMART CABLE SIZING: Precise calculations based on power, voltage, and load type (including specialized motor calculations). β€’ DUAL STANDARDS: Full compliance tracking for both IEC (International) and NEC (USA/North America) standards. β€’ UNIT FLEXIBILITY: Toggle instantly between Metric (mmΒ²) and Imperial (AWG/kcmil) units. β€’ AUTOMATED MATERIAL SUMMARY: Add cables, breakers, and accessories. CuCalc sums up identical material types across multiple entries for quick ordering. β€’ PROJECT ARCHIVE: Group multiple calculations into neat projects. Save, edit, and export your history seamlessly. β€’ CUSTOM INVENTORY: Add your own custom materials, unique cables, or specialized fuses to any project. β€’ PROFESSIONAL PDF REPORTS: Export detailed, branded technical reports with your Company Name to share with clients or team members. TECHNICAL SPECIFICATIONS: β€’ Calculations: Voltage drop, current (A), minimum permitted conductor size, and breaker pairing. β€’ Localization: Fully translated in English, German, French, and Croatian. Download CuCalc today to eliminate calculation errors and professionalize your electrical workflow.

Screenshots

Wattson4 screens
CuCalc4 screens

Verdict

The call

The clearest difference is update cadence: Wattson at every 5 days against CuCalc's every 3 weeks. On price, in-app purchases and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Wattson sells 1 one-off in-app purchase and CuCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Wattson ships an update every 5 days, CuCalc every 3 weeks. The most recent releases landed on October 20, 2026 and October 13, 2026 respectively.

Scorecard1 real difference Β· 5 level
Wattson versus CuCalc: the parameters behind the verdict, then further details
ParameterWattsonCuCalc
PriceFreeFree
Update frequencyEvery 5 days β€” betterEvery 3 weeks
AdsNoβ€”
In-app purchasesYesYes
DevicesiPhone β€” betterβ€”
Requires iOS16.0 β€” better17.6
Further details β€” not scored
Size44 MB3 MB
Age rating17+4+
DeveloperMarin MartinovicANDELKO PADOVIC

In-app purchases

1 purchases

Wattson

One-time1
  • Wattson Pro$5.99
1 purchases

CuCalc

One-time1
  • CuCalc Pro$9.99

Questions

Is Wattson free?
Wattson is free to download, with in-app purchases available.
Is CuCalc free?
CuCalc is free to download, with in-app purchases available.
Which is updated more often, Wattson or CuCalc?
Wattson ships an update every 5 days, and CuCalc every 3 weeks. Most recently, Wattson was updated on October 20, 2026 and CuCalc on October 13, 2026.

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