Comparison

eViewer vs BuilderCalc

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

Head to head
About

eViewer

Features
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We present the official App of Cegasa EnergΓ­a to display the status of your installation. With it, you will be able to know: β€’ Parameters of the complete system: system voltage, current, state of charge, temperature and cycles performed β€’ Status of the modules: you will be able to know the status of each module, alarms, warnings, etc. β€’ Parameters of each module: Voltage, current, state of charge, temperature, etc. β€’ CAN parameters: It will be possible to view the premises sent by the system to your application. β€’ Statistical data: View the energy consumption used by our batteries in the last 24 hours, in the last month and even since it started. To connect to our TCC management system, just follow the steps below. It is so simple! 1. Install our App 2. Activate your Bluetooth connection 3. Press the button on the TCC management system 4. Enter the code 5. Enjoy the experience !! Take all your systems in real time on your favorite device and see how your electricity bill is reduced thanks to Cegasa EnergΓ­a’s lithium ion batteries…

About

BuilderCalc

Features
Read full description

The construction calculator a contractor actually uses on the job site β€” tile, drywall, concrete, paint, framing β€” every material estimate, with waste built in. Tap a project. Answer 2–3 questions. BuilderCalc tells you exactly how much to buy β€” humanized ("Buy 3 gallons, about $90–$140"), the shopping list to bring, and the mistakes that cost real money every year. FIVE GUIDED PROJECT FLOWS β€’ Paint a room β€” wall area minus openings, primer + coats, gallon estimate β€’ Tile a bathroom β€” square footage, box count, waste factor, grout volume β€’ Build a deck (Pro) β€” joist spacing, beams, posts, footings, decking, fasteners β€’ Install drywall (Pro) β€” sheets by room, screws, mud, tape β€’ Pour a concrete slab (Pro) β€” slab, footers, columns, bags or yards EVERY FLOW INCLUDES β€’ The humanized result, not just decimals β€’ The shopping list to bring to the hardware store β€’ The mistakes to dodge β€” sourced from JLC, Fine Homebuilding, This Old House, and the IRC PLUS 14 PRO CALCULATORS UNDERNEATH Tile Β· Drywall Β· Concrete Β· Paint Β· Flooring (LVP, hardwood, laminate, carpet) Β· Framing (studs, plates, headers) Β· Roofing (squares, underlayment, ridge cap) Β· Layout (diagonal squareness, stair stringer, rake/run/rise) Β· Materials waste Β· Square footage Β· Conversions Β· Volume Β· Coverage Β· Cost-per-unit WHO IT'S FOR Contractors, remodelers, handymen, framers, finish carpenters. Homeowners running a real project. Anyone who'd rather take an extra coffee break than re-measure for the third time. FREE vs PRO Free forever: paint and tile flows + all 14 calculators. Pro unlocks deck, drywall, and concrete flows; saved-job worksheets; cost-per-square-foot tracking. One-time or subscription. Subscriptions auto-renew until cancelled. Manage in your Apple ID Subscription Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://doublevision.company/privacy OFFLINE. NO ACCOUNT. NO ADS. The job site doesn't always have signal. Neither does this app, by design.

Screenshots

eViewer4 screens
BuilderCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: eViewer at none against BuilderCalc's 3. eViewer also leads on iOS requirement (13.0 vs 16.0). BuilderCalc's advantage is update cadence (every 4 days vs every 4 months). On price, ads and device support 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. BuilderCalc sells 3 in-app purchases, starting at $3.99 per month. eViewer asks for nothing beyond the download.

UpkeepUpdate frequency

eViewer ships an update every 4 months, BuilderCalc every 4 days. The most recent releases landed on September 14, 2026 and October 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
eViewer versus BuilderCalc: the parameters behind the verdict, then further details
ParametereViewerBuilderCalc
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS13.0 β€” better16.0
Further details β€” not scored
Size13 MB1 MB
Age rating4+4+
DeveloperCegasa Energia, Sociedad LimitadaDouble Vision USA LLC

In-app purchases

None

eViewer

No in-app purchases

3 purchases

BuilderCalc

Subscriptions2
  • Pro Monthly7 Days trial$3.991 Month
  • Pro Yearly7 Days trial$29.991 Year
One-time1
  • Pro Unlock$74.99

Questions

Is eViewer free?
eViewer is free to download, with no in-app purchases.
Is BuilderCalc free?
BuilderCalc is free to download, with in-app purchases available.
Do eViewer or BuilderCalc have ads?
Neither eViewer nor BuilderCalc shows ads.
Which is updated more often, eViewer or BuilderCalc?
eViewer ships an update every 4 months, and BuilderCalc every 4 days. Most recently, eViewer was updated on September 14, 2026 and BuilderCalc on October 5, 2026.

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