Resistor Calc+ vs APPhone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculates resistance for 3-6 band resistors
- Visual band color selection
- Displays resistance and tolerance
- Aids electronics configuration
- User-friendly interface
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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.
APPhone
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Resistor Calc+ | APPhone |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 6 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | EONSOFT | Jan Milewczyk |
In-app purchases
Resistor Calc+
No in-app purchases
APPhone
No in-app purchases
Questions
Is Resistor Calc+ free?
Is APPhone free?
Do Resistor Calc+ or APPhone have ads?
Which is updated more often, Resistor Calc+ or APPhone?
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