Comparison

AurumTools vs OTEC

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AurumTools

Features
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"Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/"AurumTool is the versatile app designed specifically for goldsmiths and jewelry manufacturers. It offers numerous practical features to simplify and streamline daily work. With AurumTool, you can compare ring sizes, calculate prices, and determine the optimal mixing ratios for alloys. Additionally, the app enables you to calculate the required material length for jewelry pieces, provides detailed specifications for diamonds, and supports real-time gold price calculations. AurumTool combines all these essential tools into a user-friendly application, making it the perfect digital companion for everyone in the jewelry industry. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

OTEC

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Designed for professional metal polishing, OTEC gives you a smarter, faster and more precise way to manage your workflows. Key Features • Seamless Bluetooth connection to your EF-One or EF-Nova • Adjust processing parameters directly from the app • Save custom settings for consistent, repeatable results • Create and manage Recipes for specific workpieces, including time, speed & voltage • Improve efficiency with quick access to your preferred polishing processes With OTEC, you can bring precision, repeatability and maximum convenience to your surface-finishing operations—right from your smartphone.

Screenshots

AurumTools3 screens
OTEC4 screens

Verdict

The call

The clearest difference is in-app purchases: OTEC at none against AurumTools's 2. OTEC also leads on ads (none vs shown) and iOS requirement (14.0.0 vs 16.6). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AurumTools sells 2 in-app purchases, starting at $5.90 per month. OTEC asks for nothing beyond the download.

UpkeepUpdate frequency

AurumTools ships an update every 6 weeks, OTEC monthly. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 3 level
AurumTools versus OTEC: the parameters behind the verdict, then further details
ParameterAurumToolsOTEC
PriceFreeFree
Update frequencyEvery 6 weeksMonthly — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.614.0.0 — better
Further details — not scored
Size56 MB24 MB
Age rating4+4+
DeveloperKaddick GoldschmiedeOTEC Präzisionsfinish GmbH

In-app purchases

2 purchases

AurumTools

Subscriptions2
  • Monthly$5.901 Month
  • Yearly7 Days trial$59.001 Year
None

OTEC

No in-app purchases

Questions

Is AurumTools free?
AurumTools is free to download, with in-app purchases available.
Is OTEC free?
OTEC is free to download, with no in-app purchases.
Do AurumTools or OTEC have ads?
AurumTools shows ads; OTEC does not.
Which is updated more often, AurumTools or OTEC?
AurumTools ships an update every 6 weeks, and OTEC monthly. Most recently, AurumTools was updated on October 5, 2026 and OTEC on October 1, 2026.

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