# RCircuitCalc vs Countdown & Visual Timer

The clearest difference is price: Countdown & Visual Timer at Free against RCircuitCalc's $1.99. Countdown & Visual Timer also leads on rating (4.0 vs 1.0) and update cadence (every 2 days vs every 17 months). RCircuitCalc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Countdown & Visual Timer is free to download; RCircuitCalc costs $1.99 up front. Countdown & Visual Timer sells 1 one-off in-app purchase. RCircuitCalc asks for nothing beyond the download.

Countdown & Visual Timer holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: RCircuitCalc has 5 ratings behind it against 1, so its average is the more settled of the two.

RCircuitCalc ships an update every 17 months, Countdown & Visual Timer every 2 days. The most recent releases landed on June 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | RCircuitCalc | Countdown & Visual Timer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [1.0 (5 ratings)](https://appshunter.io/ios/app/rcircuitcalc/id857468508/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/countdown-and-visual-timer/id6499164517/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 7 MB | 74 MB |
| Requires iOS | **13.6** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAKAHIKO FUKUYAMA](https://appshunter.io/developer/857468511) | [ByteBlocks, LLC](https://appshunter.io/developer/1676719240) |

## What reviewers say

### RCircuitCalc

[App page](https://appshunter.io/ios/app/rcircuitcalc/id857468508)

This app helps engineers and students design electrical and electronic circuits by calculating standard resistance values based on E-series numbers. It supports various circuit types, including voltage dividers, series, parallel, and combination circuits, and can also calculate current and power for each resistor.

**Highlights:** Calculates standard resistance values, Supports voltage dividers, series, parallel, and combination circuits, Calculates current and power for resistors, Outputs resistance values based on E-series numbers (E6, E12, E24, E48, E96), Calculations based on input voltage, output voltage, current, and resistance ratio

**Features:** macOS Compatibility

**In-app purchases:** none


### Countdown & Visual Timer

[App page](https://appshunter.io/ios/app/countdown-and-visual-timer/id6499164517)

This app helps you track important dates and events with customizable countdowns and timely reminders. It offers unlimited event creation and a count-up feature for past occasions. Personalize your countdowns with custom backgrounds and home screen widgets.

**Highlights:** Customizable countdowns, Timely reminders, Unlimited event creation, Count up from past events, Customizable backgrounds, Home screen widget

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countdown | $3.99 | one-time |


## Frequently asked questions

### Is RCircuitCalc free?

RCircuitCalc costs $1.99, with no in-app purchases.

### Is Countdown & Visual Timer free?

Countdown & Visual Timer is free to download, with in-app purchases available.

### Which has better reviews, RCircuitCalc or Countdown & Visual Timer?

Countdown & Visual Timer is rated higher. RCircuitCalc averages 1.0 out of 5 from 5 ratings, while Countdown & Visual Timer averages 4.0 from 1 ratings.

### Do RCircuitCalc or Countdown & Visual Timer have ads?

Countdown & Visual Timer shows ads; RCircuitCalc does not.

### Which is updated more often, RCircuitCalc or Countdown & Visual Timer?

RCircuitCalc ships an update every 17 months, and Countdown & Visual Timer every 2 days. Most recently, RCircuitCalc was updated on June 8, 2026 and Countdown & Visual Timer on September 17, 2026.

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