# Circuit Resistance Creator vs SpeedMark

The clearest difference is in-app purchases: Circuit Resistance Creator at none against SpeedMark's 6. Circuit Resistance Creator also leads on update cadence (every 3 weeks vs every 6 weeks) and device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. SpeedMark sells 6 in-app purchases, starting at $3.99 per month. Circuit Resistance Creator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Circuit Resistance Creator against 5.0 for SpeedMark. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Circuit Resistance Creator ships an update every 3 weeks, SpeedMark every 6 weeks. The most recent releases landed on September 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Circuit Resistance Creator | SpeedMark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/speedmark/id6760244323/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 16 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [1807 LLC](https://appshunter.io/developer/1883437121) |

## What reviewers say

### Circuit Resistance Creator

[App page](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949)

Calculate equivalent resistance for any resistor circuit. This tool is designed for students, technicians, and engineers, offering high accuracy for voltage, current, and resistance. It's a great way to check homework and perform engineering calculations.

**Highlights:** Equivalent resistance calculation, Supports any resistor circuit, High accuracy displays (6 decimal places), Apply custom circuit voltages, Designed for students and engineers, Homework checking tool

**Features:** macOS Compatibility

**In-app purchases:** none


### SpeedMark

[App page](https://appshunter.io/ios/app/speedmark/id6760244323)

This app helps drivers stay aware of their speed and avoid tickets. It provides real-time speed limit displays, over-limit alerts, and automatic drive recording. Optional Guardian Alerts can notify trusted contacts if you exceed the speed limit significantly, without continuous location sharing.

**Highlights:** Real-time speed limit display, Instant over-limit alerts, Adjustable alert sensitivity, Guardian Alerts for trusted contacts, Automatic background drive recording, Session replay on map, Exportable drive reports

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpeedMark Lite - Monthly | $3.99 | per month |
| SpeedMark Full - Monthly | $5.99 | per month |
| SpeedMark Family Lite - Monthly | $6.99 | per month |
| SpeedMark Lite - Annual | $34.99 | per year |
| SpeedMark Full - Annual | $49.99 | per year |
| SpeedMark Family Lite - Annual | $59.99 | per year |


## Frequently asked questions

### Is Circuit Resistance Creator free?

Circuit Resistance Creator is free to download, with no in-app purchases.

### Is SpeedMark free?

SpeedMark is free to download, with in-app purchases available.

### Which has better reviews, Circuit Resistance Creator or SpeedMark?

Circuit Resistance Creator and SpeedMark are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Circuit Resistance Creator or SpeedMark have ads?

Neither Circuit Resistance Creator nor SpeedMark shows ads.

### Which is updated more often, Circuit Resistance Creator or SpeedMark?

Circuit Resistance Creator ships an update every 3 weeks, and SpeedMark every 6 weeks. Most recently, Circuit Resistance Creator was updated on September 26, 2026 and SpeedMark on October 28, 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.*