# Electric circuit calculator vs Marker database

The clearest difference is in-app purchases: Marker database at none against Electric circuit calculator's 3. Electric circuit calculator's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Electric circuit calculator sells 3 in-app purchases, starting at $3.99 per month. Marker database asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Electric circuit calculator | Marker database |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (11 ratings)](https://appshunter.io/ios/app/electric-circuit-calculator/id1662063384/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 111 MB | 7 MB |
| Requires iOS | **15.6** | 16.3 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [Komplex s.r.o.](https://appshunter.io/developer/1767399890) |

## What reviewers say

### Electric circuit calculator

[App page](https://appshunter.io/ios/app/electric-circuit-calculator/id1662063384)

This app simplifies complex electrical and electronic circuit calculations for students, hobbyists, and professionals. It offers tools for Ohm's Law, DC analysis, and various circuit configurations, with integrated learning resources to enhance understanding.

**Highlights:** Parallel circuit current calculation, Series circuit voltage calculation, Series/parallel resistance calculation, Ohm's Law calculator, DC analysis tools, LR filter calculations, Integrated learning explanations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ONE MONTH UNLOCK | $3.99 | per month |
| ONE YEAR UNLOCK | $29.99 | per year |
| LIFETIME UNLOCK | $54.99 | one-time |


### Marker database

[App page](https://appshunter.io/ios/app/marker-database/id6670759357)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electric circuit calculator free?

Electric circuit calculator is free to download, with in-app purchases available.

### Is Marker database free?

Marker database is free to download, with no in-app purchases.

### Do Electric circuit calculator or Marker database have ads?

Neither Electric circuit calculator nor Marker database shows ads.

### Which is updated more often, Electric circuit calculator or Marker database?

Electric circuit calculator ships an update every 4 months, and Marker database every 4 months. Most recently, Electric circuit calculator was updated on October 21, 2026 and Marker database on October 16, 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.*