Comparison

SmartPro Instrument vs OTEC

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

Head to head
About

SmartPro Instrument

This app displays measurement test results synchronized with specialized devices. It allows users to generate, share, and print certifications for diamonds and other gemstones after completing required tests.

Highlights
  • Synchronized measurement test results
  • Generate gemstone certifications
  • Share and print certifications
  • Supports Diamonds, Moissanites, CVD/HPHT
  • Works with multiple SmartPro devices
Features
Read full description

This application is used to display measurement test results which is synchronized with SmartPro devices. Users may generate, share and print certifications for Diamonds, Moissanites and CVD/HPHT by completing the required tests and certification form. Available SmartPro Devices 1. Reader I: Identifying between Diamond, Moissanite and Simulant. 2. Gem-Eye I: Distinguish between diamond and its other simulants. 3. Screen I: Identifying between Natural Diamonds from Synthetic Diamonds CVD/HPHT. 4. Optimum I: Identifying between Natural Diamond, CVD/HPHT and all types of Moissanite. 5. Primo I: Digital Gem Gauge, measures small dimensions accurately in millimeters with direct conversion to carat unit. Follow us on: https://www.youtube.com/channel/UC_8CvolTj8jbXJkwvZbdb5Q/videos) Website: https://www.smartproinstrument.com/

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

SmartPro Instrument4 screens
OTEC4 screens

Verdict

The call

SmartPro Instrument and OTEC are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SmartPro Instrument ships an update every 2 months, OTEC monthly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

ScorecardNo meaningful differences
SmartPro Instrument versus OTEC: the parameters behind the verdict, then further details
ParameterSmartPro InstrumentOTEC
PriceFreeFree
Rating1.8 (8 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.0.0 — better
Further details — not scored
Size44 MB24 MB
Age rating17+4+
DeveloperSmartPro Instrument Co., Ltd.OTEC Präzisionsfinish GmbH

In-app purchases

None

SmartPro Instrument

No in-app purchases

None

OTEC

No in-app purchases

Questions

Is SmartPro Instrument free?
SmartPro Instrument is free to download, with no in-app purchases.
Is OTEC free?
OTEC is free to download, with no in-app purchases.
Do SmartPro Instrument or OTEC have ads?
Neither SmartPro Instrument nor OTEC shows ads.
Which is updated more often, SmartPro Instrument or OTEC?
SmartPro Instrument ships an update every 2 months, and OTEC monthly. Most recently, SmartPro Instrument was updated on October 24, 2026 and OTEC on October 19, 2026.

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