Comparison

QR Code Scanner vs VoltSizer

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

Head to head
About

QR Code Scanner

Easily scan and read QR codes and barcodes to quickly access information, connect to Wi-Fi, and search for product details. This utility helps you avoid unknown links and securely access online content.

Highlights
  • Scan QR Codes
  • Read Barcodes
  • Search Product Info
  • Access Wi-Fi Quickly
  • Save History
  • Create QR Codes
Features
Read full description

Safe, Smart, Super-Your New Code Scanner Best app to help you scan and read QR code & Barcode! Features: -Scan QR Codes -Read Barcodes -Search Products Info -Avoid Stranger Danger -Access Wi-Fi Quickly -Save History About subscriptions - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable * Terms of Use: https://qrcodescanner.onetouchinsight.com/privacy * Privacy Policy: https://qrcodescanner.onetouchinsight.com/terms * Support: https://qrcodescanner.onetouchinsight.com/support

About

VoltSizer

Features
Read full description

VoltSizer is a low-voltage DC cable sizing and electrical calculation app built for campervans, overland rigs, off-grid solar cabins, marine builds and mobile audio systems. Unlike basic voltage drop calculators that only look up wire gauges, it treats your DC installation as a full engineering project, combining cable physics, real connection losses and coordinated overcurrent protection. It performs full DC loop voltage drop calculations with chassis ground mode support, showing results at 20°C and elevated operating temperatures. Milliohm losses from crimp lugs, fuse holders, isolators and busbars are included so outputs match real multimeter readings. The tool picks compliant fuse ratings following the 1.25× continuous current rule and derated wire ampacity. It flags low-voltage shutdown risks for inverters, pumps and electronics, and assesses motor inrush without overspecifying copper. Organise multiple branch circuits with custom ambient temperature and bundling factors. Input equipment duty cycles to compute energy use and battery runtime, or simulate upgrades between 12 V, 24 V, 36 V and 48 V to find copper weight savings. Practical workshop utilities: calculate safe limits for leftover cable spools, find maximum compliant run length for a fixed wire gauge, view pass/fail gauge matrices with failure explanations, and quickly reference terminal studs, lugs and torque specs. Track commissioning checks including terminal torque and measured voltage drops. Auto-generate BOMs with cable lengths, copper weight and terminal counts, then export clean professional PDF specification sheets. Fully offline with no internet required. No accounts, sign-ins or tracking — all your project data stays local on your device.、

Screenshots

QR Code Scanner4 screens
VoltSizer4 screens

Verdict

The call

The clearest difference is in-app purchases: VoltSizer at none against QR Code Scanner's 6. 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. QR Code Scanner sells 6 in-app purchases, starting at $7.99 per month. VoltSizer asks for nothing beyond the download.

Scorecard1 real difference · 9 level
QR Code Scanner versus VoltSizer: the parameters behind the verdict, then further details
ParameterQR Code ScannerVoltSizer
PriceFreeFree
Rating4.8 (66 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings66 — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size85 MB4 MB
Age rating+174+
DeveloperIdentity and Access SecurityHimraj Singh

In-app purchases

6 purchases

QR Code Scanner

Subscriptions5
  • QR Reader Premium 1-Month3 Days trial$7.991 Month
  • QR Reader Premium 1-Week7 Days trial$8.997 Days
  • QR Reader Premium 1-Week3 Days trial$9.997 Days
Show 2 more
  • QR Reader Premium 1-Year3 Days trial$29.991 Year
  • QR Reader Premium 1-Year$29.991 Year
One-time1
  • Premium -lifetime$29.99
None

VoltSizer

No in-app purchases

Questions

Is QR Code Scanner free?
QR Code Scanner is free to download, with in-app purchases available.
Is VoltSizer free?
VoltSizer is free to download, with no in-app purchases.
Do QR Code Scanner or VoltSizer have ads?
Neither QR Code Scanner nor VoltSizer shows ads.

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