SmartPro Instrument vs OTEC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Synchronized measurement test results
- Generate gemstone certifications
- Share and print certifications
- Supports Diamonds, Moissanites, CVD/HPHT
- Works with multiple SmartPro devices
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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/
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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SmartPro Instrument ships an update every 2 months, OTEC monthly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | SmartPro Instrument | OTEC |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (8 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0.0 — better |
| Further details — not scored | ||
| Size | 44 MB | 24 MB |
| Age rating | 17+ | 4+ |
| Developer | SmartPro Instrument Co., Ltd. | OTEC Präzisionsfinish GmbH |
In-app purchases
SmartPro Instrument
No in-app purchases
OTEC
No in-app purchases
Questions
Is SmartPro Instrument free?
Is OTEC free?
Do SmartPro Instrument or OTEC have ads?
Which is updated more often, SmartPro Instrument or OTEC?
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