# verificathor vs SJ Resistor Calculator

The clearest difference is in-app purchases: verificathor at none against SJ Resistor Calculator's 5. verificathor also leads on ads (none vs shown) and iOS requirement (14.2 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SJ Resistor Calculator sells 5 one-off in-app purchases. verificathor asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | verificathor | SJ Resistor Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 74 MB | 4 MB |
| Requires iOS | **14.2** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MCDI Security Products Inc.](https://appshunter.io/developer/536074992) | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) |

## What reviewers say

### verificathor

[App page](https://appshunter.io/ios/app/verificathor/id1549269770)

**Features:** macOS Compatibility

**In-app purchases:** none


### SJ Resistor Calculator

[App page](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457)

This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.

**Highlights:** Resistor color code decoding (4, 5, 6 band), Series resistor calculations, Parallel resistor calculations, Accurate resistance and tolerance values, User-friendly interface

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coffee | $0.99 | one-time |
| A cookie | $2.99 | one-time |
| No ads | $4.99 | one-time |
| A lemon tart | $4.99 | one-time |
| A pizza | $9.99 | one-time |


## Frequently asked questions

### Is verificathor free?

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

### Is SJ Resistor Calculator free?

SJ Resistor Calculator is free to download, with in-app purchases available.

### Do verificathor or SJ Resistor Calculator have ads?

SJ Resistor Calculator shows ads; verificathor does not.

### Which is updated more often, verificathor or SJ Resistor Calculator?

verificathor ships an update every 2 weeks, and SJ Resistor Calculator every 2 weeks. Most recently, verificathor was updated on November 3, 2026 and SJ Resistor Calculator on November 4, 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.*