# Technician | AquaCertify.com vs Resistor

The clearest difference is update cadence: Technician | AquaCertify.com at monthly against Resistor's every 9 months. Technician | AquaCertify.com also leads on iOS requirement (14.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Technician | AquaCertify.com ships an update monthly, Resistor every 9 months. The most recent releases landed on October 2, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Technician | AquaCertify.com | Resistor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (17 ratings)](https://appshunter.io/ios/app/resistor-converter/id6446839759/reviews)** |
| Number of ratings | — | **17** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | — | Free |
| Size | 26 MB | 8 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Consoli Tech](https://appshunter.io/developer/1657768164) | [Gerhard Lentschik](https://appshunter.io/developer/629988041) |

## What reviewers say

### Technician | AquaCertify.com

[App page](https://appshunter.io/ios/app/technician-aquacertifycom/id1553483969)

**Features:** macOS Compatibility

**In-app purchases:** none


### Resistor

[App page](https://appshunter.io/ios/app/resistor-converter/id6446839759)

Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.

**Highlights:** Calculate resistor values from color bands, Convert resistor values to color bands, Supports 4, 5, and 6-band resistors, Handles SMD codes (EIA-3, EIA-4, EIA-96), Works offline, No registration required

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

**In-app purchases:** none


## Frequently asked questions

### Is Technician | AquaCertify.com free?

Technician | AquaCertify.com is free to download, with no in-app purchases.

### Is Resistor free?

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

### Do Technician | AquaCertify.com or Resistor have ads?

Neither Technician | AquaCertify.com nor Resistor shows ads.

### Which is updated more often, Technician | AquaCertify.com or Resistor?

Technician | AquaCertify.com ships an update monthly, and Resistor every 9 months. Most recently, Technician | AquaCertify.com was updated on October 2, 2026 and Resistor on September 27, 2026.

---

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