# GoldCalculator Pro vs OTEC

The clearest difference is update cadence: GoldCalculator Pro at every 4 days against OTEC's monthly. OTEC's advantage is iOS requirement (14.0.0 vs 18.4). 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.

GoldCalculator Pro ships an update every 4 days, OTEC monthly. The most recent releases landed on September 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | GoldCalculator Pro | OTEC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/goldcalculator-pro/id6746294725/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free | — |
| Size | 13 MB | 24 MB |
| Requires iOS | 18.4 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alaa Shaban](https://appshunter.io/developer/1816087486) | [OTEC Präzisionsfinish GmbH](https://appshunter.io/developer/1860278470) |

## What reviewers say

### GoldCalculator Pro

[App page](https://appshunter.io/ios/app/goldcalculator-pro/id6746294725)

This app instantly calculates the value of gold and silver using real-time market prices. It supports various karats and silver purities, allowing input in grams or pennyweight. Adjust buy/sell margins and refresh prices with a single tap.

**Highlights:** Live gold & silver prices, Supports multiple karats and silver purities, Input weight in grams or pennyweight, Adjustable buy/sell margin, One-tap spot price refresh, Dark Mode support

**Features:** macOS Compatibility

**In-app purchases:** none


### OTEC

[App page](https://appshunter.io/ios/app/otec/id6756361669)

**In-app purchases:** none


## Frequently asked questions

### Is GoldCalculator Pro free?

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

### Is OTEC free?

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

### Do GoldCalculator Pro or OTEC have ads?

Neither GoldCalculator Pro nor OTEC shows ads.

### Which is updated more often, GoldCalculator Pro or OTEC?

GoldCalculator Pro ships an update every 4 days, and OTEC monthly. Most recently, GoldCalculator Pro was updated on September 21, 2026 and OTEC on October 19, 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.*