Comparison

Box Fill 2 vs KCi IoT

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

Head to head
About

Box Fill 2

This utility app helps electricians and contractors perform precise electrical box fill calculations according to the latest codes. It also includes a comprehensive construction calculator for dimensional math, area, volume, and right-angle solutions.

Highlights
  • Electrical box fill calculations
  • Construction calculator
  • Dimensional math (feet-inches-fractions, metric)
  • Area and volume calculations
  • Right-angle solutions
  • Shareable calculation reports
  • iCloud sync across devices
Features
Read full description

Box Fill 2: Electrical & Construction Calculator Stop guessing and start calculating with confidence. Box Fill 2 is the ultimate pro-grade utility for electricians, contractors, and engineers. Designed to streamline your workflow from the office to the job site, it combines a precision electrical box fill calculator with a full-featured construction calculator in one powerful, intuitive interface. EXPERT ELECTRICAL CALCULATIONS Stay compliant and safe with box fill calculations based on the latest standards, including the 2024 Canadian Electrical Code (CEC) and the 2023 National Electrical Code (NEC). Complete Fill Schedules: Create and save an unlimited list of calculations for entire projects. Advanced Device Logic: Automatically handles standard devices and "bulky" equipment (like smart dimmers or GFCIs) using the specific depth-based volume math required by the CEC. Detailed Conductor Tracking: Easily account for insulated conductors, bare grounds (with the NEC "4-ground" rule), internal clamps, and wire nuts. Custom Box Support: Use standard trade sizes or enter custom dimensions for specialized enclosures. Share & Export: Print directly from the app or share professional calculation reports via email or messaging to inspectors and team members. FULL CONSTRUCTION CALCULATOR No more switching between apps. Box Fill 2 includes a robust construction math engine designed for the trades. Dimensional Math: Work directly in feet-inches-fractions or metric units with seamless conversions. Area & Volume: Quickly solve for square footage and cubic volume for materials like concrete, drywall, and paint. Right-Angle Solutions: Instantly calculate rafters, slopes, and square-ups for precise layouts. History & Memory: Access previous calculations and save frequently used values to save time on repetitive tasks. MODERN & PROFESSIONAL FEATURES Universal Compatibility: Buy once and use on your iPhone, iPad, and Mac. iCloud Sync: Your project data stays up-to-date across all your devices automatically. Dark Mode Support: Optimized for high visibility in low-light job site conditions. Clean Interface: Ad-free, professional UI designed for speed and clarity under pressure. Put your pencil down and upgrade your toolkit. Download Box Fill 2 today.

About

KCi IoT

Features
Read full description

An application to monitor events, register devices with the cloud receiver, toggle relays, and program King Fisher IoT transmitters remotely.

Screenshots

Box Fill 24 screens
KCi IoT3 screens

Verdict

The call

The clearest difference is price: KCi IoT at Free against Box Fill 2's $3.99. KCi IoT also leads on iOS requirement (16.4 vs 26.0). Box Fill 2's advantage is update cadence (every 5 weeks vs every 7 months). 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

KCi IoT is free to download; Box Fill 2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Box Fill 2 ships an update every 5 weeks, KCi IoT every 7 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Box Fill 2 versus KCi IoT: the parameters behind the verdict, then further details
ParameterBox Fill 2KCi IoT
Price$3.99Free — better
Rating3.3 (3 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.4 — better
Further details — not scored
Size19 MB3 MB
Age rating4+4+
DeveloperSnappy Appz Inc.Kingfisher Company Inc.

In-app purchases

None

Box Fill 2

No in-app purchases

None

KCi IoT

No in-app purchases

Questions

Is Box Fill 2 free?
Box Fill 2 costs $3.99, with no in-app purchases.
Is KCi IoT free?
KCi IoT is free to download, with no in-app purchases.
Do Box Fill 2 or KCi IoT have ads?
Neither Box Fill 2 nor KCi IoT shows ads.
Which is updated more often, Box Fill 2 or KCi IoT?
Box Fill 2 ships an update every 5 weeks, and KCi IoT every 7 months. Most recently, Box Fill 2 was updated on November 3, 2026 and KCi IoT on October 30, 2026.

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