Comparison

Resistor vs PortScope Pro

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

Head to head
About

Resistor

Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.

Highlights
  • Calculate resistor values from color bands
  • Convert resistor values to color bands
  • Supports 4, 5, and 6-band resistors
  • Handles SMD codes (EIA-3, EIA-4, EIA-96)
  • Works offline
  • No registration required
Features
Read full description

Resistor Converter – Fast & Easy Calculate resistor values, color bands, and SMD codes in seconds – perfect for electronics hobbyists, students, and professionals. Supports 4-, 5-, and 6-band resistors as well as SMD codes (EIA-3, EIA-4, EIA-96). - Tap color bands → read the value - Enter resistor → get matching color bands & SMD codes - Works offline, no registration required - Perfect for electronics, study & DIY projects Simple, fast, and free – the perfect companion for every electronics enthusiast!

About

PortScope Pro

Read full description

PortScope Pro is a powerful and lightweight network port scanner tailored for IT professionals, system administrators, developers, and security enthusiasts. It allows you to scan any IP address or hostname directly from your iPhone, delivering real-time results with clear progress tracking. The app offers flexible scan options, including common ports, all ports, web ports, or custom port ranges, and supports service detection for over 50 popular protocols like HTTP, SSH, FTP, and databases. Each port scan includes latency measurements and color-coded results for easy identification of open, closed, or filtered ports. PortScope Pro automatically saves your scan history, enabling quick access to past results with detailed port information. Designed with a sleek dark interface and concurrent scanning capabilities, it provides fast, reliable network diagnostics and security assessments in a minimal, user-friendly environment. Terms of Use Link: https://docs.google.com/document/d/1IwkMf1PRkVGJOTAca0zhUHRdR1O_g6QoXMWFQ7UzQhM/edit?tab=t.wlemd3hn94zi Privacy Policy: https://docs.google.com/document/d/1IwkMf1PRkVGJOTAca0zhUHRdR1O_g6QoXMWFQ7UzQhM/edit?tab=t.0

Screenshots

Resistor4 screens
PortScope Pro3 screens

Verdict

The call

The clearest difference is iOS requirement: PortScope Pro at 16.0 against Resistor's 26.0. On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
Resistor versus PortScope Pro: the parameters behind the verdict, then further details
ParameterResistorPortScope Pro
PriceFreeFree
Rating4.9 (19 ratings) — better—
Number of ratings19 — better—
Update frequencyEvery 9 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size8 MB9 MB
Age rating4+4+
DeveloperGerhard LentschikPortScope Pro

In-app purchases

None

Resistor

No in-app purchases

None

PortScope Pro

No in-app purchases

Questions

Is Resistor free?
Resistor is free to download, with no in-app purchases.
Is PortScope Pro free?
PortScope Pro is free to download, with no in-app purchases.
Do Resistor or PortScope Pro have ads?
Neither Resistor nor PortScope Pro shows ads.

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