# Resistor Color Code Calc. vs TechKIT

The clearest difference is in-app purchases: TechKIT at none against Resistor Color Code Calc.'s 1. TechKIT also leads on update cadence (every 6 days vs every 4 months). Resistor Color Code Calc.'s advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Resistor Color Code Calc. sells 1 one-off in-app purchase. TechKIT asks for nothing beyond the download.

Resistor Color Code Calc. ships an update every 4 months, TechKIT every 6 days. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Resistor Color Code Calc. | TechKIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/resistor-color-code-calc/id6755287812/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 72 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) | [Sergio Kirienko](https://appshunter.io/developer/1611605628) |

## What reviewers say

### Resistor Color Code Calc.

[App page](https://appshunter.io/ios/app/resistor-color-code-calc/id6755287812)

Instantly decode resistor color bands, calculate exact values, and convert SMD resistor markings. This app provides essential tools for electronics students, technicians, and hobbyists with a clean interface and fast processing.

**Highlights:** Decode 3- to 6-band resistors, Calculate resistance values, Convert SMD resistor codes, Series and parallel resistor calculators, Save and share results, Clean and simple interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $12.99 | one-time |


### TechKIT

[App page](https://appshunter.io/ios/app/techkit-technician-tools/id6756894714)

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

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Color Code Calc. free?

Resistor Color Code Calc. is free to download, with in-app purchases available.

### Is TechKIT free?

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

### Do Resistor Color Code Calc. or TechKIT have ads?

TechKIT shows ads; Resistor Color Code Calc. does not.

### Which is updated more often, Resistor Color Code Calc. or TechKIT?

Resistor Color Code Calc. ships an update every 4 months, and TechKIT every 6 days. Most recently, Resistor Color Code Calc. was updated on September 10, 2026 and TechKIT on September 15, 2026.

---

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