Comparison

Resistor Calc+ vs APPhone

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

Head to head
About

Resistor Calc+

This utility helps you determine the resistance value of resistors by interpreting their colored bands. It supports 3, 4, 5, and 6 band resistors, visually displaying your selections and the calculated resistance and tolerance.

Highlights
  • Calculates resistance for 3-6 band resistors
  • Visual band color selection
  • Displays resistance and tolerance
  • Aids electronics configuration
  • User-friendly interface
Features
Read full description

Resistor color code calculator helps determine the resistance value indicated by the colored band. You can use it for 3, 4, 5 and 6 band resistors. You can click the band in the color table to select a color for that band. The resistor visually shows your band color selection and displays the corresponding resistance value. It will help you configure your electronics. How to use the resistance color code calculator - Please select the number of band colors first. - Select the color of the band by clicking on the corresponding box in the color chart. - The corresponding resistance value and the tolerance of the resistance are displayed.

About

APPhone

Features
Read full description

APPhone is a modern video intercom system right on your smartphone, designed for residents of modern housing communities, multi-family buildings, and private homes. With APPhone, your phone becomes a fully functional intercom handset. Answer calls wherever you are – at home, at work, or on the go. KEY FEATURES: • Real-time video calls: See and speak with visitors calling from the entry panel before opening the door. • Native iOS integration (Apple CallKit): Intercom calls ring just like standard phone calls – even with your screen locked. • Remote access control: Unlock pedestrian gates, entry barriers, or building entrance doors with a single tap. • Smart presence (Geofencing): The system optimizes call routing, prioritizing notifications when you are near your building. • Family & PIN management: Easily grant access to family members, generate custom access codes, and manage permissions. • Call history: Review call logs and see who visited your apartment while you were away. • Do Not Disturb (DND) mode: Silence intercom notifications whenever you need peace and quiet. GETTING STARTED: The app requires an active account associated with a building equipped with the APPhone intercom system. Contact your property manager to receive an invitation with your activation code.

Screenshots

Resistor Calc+4 screens
APPhone3 screens

Verdict

The call

The clearest difference is ads: APPhone at none against Resistor Calc+'s shown. APPhone also leads on update cadence (every 6 days vs every 2 months). Resistor Calc+'s advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price and in-app purchases 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.

UpkeepUpdate frequency

Resistor Calc+ ships an update every 2 months, APPhone every 6 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Resistor Calc+ versus APPhone: the parameters behind the verdict, then further details
ParameterResistor Calc+APPhone
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 monthsEvery 6 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.4
Further details — not scored
Size6 MB69 MB
Age rating4+4+
DeveloperEONSOFTJan Milewczyk

In-app purchases

None

Resistor Calc+

No in-app purchases

None

APPhone

No in-app purchases

Questions

Is Resistor Calc+ free?
Resistor Calc+ is free to download, with no in-app purchases.
Is APPhone free?
APPhone is free to download, with no in-app purchases.
Do Resistor Calc+ or APPhone have ads?
Resistor Calc+ shows ads; APPhone does not.
Which is updated more often, Resistor Calc+ or APPhone?
Resistor Calc+ ships an update every 2 months, and APPhone every 6 days. Most recently, Resistor Calc+ was updated on October 7, 2026 and APPhone on October 8, 2026.

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