# Electrical Parallel Calculator vs 555 Timer & Oscillators Guide

Electrical Parallel Calculator and 555 Timer & Oscillators Guide are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Electrical Parallel Calculator ships an update every 8 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Electrical Parallel Calculator | 555 Timer & Oscillators Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (33 ratings)](https://appshunter.io/ios/app/electrical-parallel-calculator/id968992028/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 24 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Electrical Parallel Calculator

[App page](https://appshunter.io/ios/app/electrical-parallel-calculator/id968992028)

This app provides three specialized calculators for parallel electrical circuits: resistance, inductance, and capacitance. It allows for easy input of values, unit customization, and delivers instant, accurate results for engineers and students.

**Highlights:** Parallel resistance calculation, Parallel inductance calculation, Parallel capacitance calculation, Customizable units (Ohm, KiloOhm, Farad, etc.), Instant and accurate results, iPad and iPhone compatible

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 555 Timer & Oscillators Guide

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-guide/id6504487994)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Parallel Calculator free?

Electrical Parallel Calculator is free to download, with no in-app purchases.

### Is 555 Timer & Oscillators Guide free?

555 Timer & Oscillators Guide is free to download, with no in-app purchases.

### Do Electrical Parallel Calculator or 555 Timer & Oscillators Guide have ads?

Both Electrical Parallel Calculator and 555 Timer & Oscillators Guide show ads.

### Which is updated more often, Electrical Parallel Calculator or 555 Timer & Oscillators Guide?

Electrical Parallel Calculator ships an update every 8 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Electrical Parallel Calculator was updated on October 7, 2026 and 555 Timer & Oscillators Guide on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*