MyGemeWizard vs TDC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MyGemeWizard
This app provides a digital system for communicating and grading gemstone colors, aligning with industry standards. It helps standardize color descriptions, streamline trade, and increase consumer confidence across the gemstone industry.
- Digital color communication system
- Industry-standard GIA alignment
- Standardized gem color descriptions
- Database of 1146 gem color images
- Color grading for over 50 gemstone types
- Share color information via messaging
Read full descriptionHide full description
My Gemewizard smartphone app is a groundbreaking digital color communication and grading system. Methodically reviewed and aligned with the industry-standard GIA® gemstone color description system. It has been designed to be used by the entire gemstone industry, from gemology students to jewelers, gem dealers and gem appraisers, enabling the standardization and communication of gem colors. My Gemewizard aims to streamline the trade, increase consumers' confidence and expand business opportunities. My Gemewizard displays a base palette of the 31 master hues - the most common basic hues of the visible spectrum - and the tone and saturation levels of each hue: making a total of 1146 gem color images. The database contains typical colors, grades and borders of over 50 types of the most traded gemstones. Gem colors are described using standard GIA® terminology and GemeWizard's alphanumeric color code. My Gemewizard enables users to quickly and accurately capture (or upload) a gem image, identify its exact color, and communicate that information, together with additional information such as the gem vendor and the event it was presented, to a third party via email, sms messages, WhatsApp, etc.
TDC
Read full descriptionHide full description
The Diamond Calculator is a powerful tool for diamond traders, jewelers, and professionals who rely on the Rapaport price list. This app simplifies diamond price calculations based on the 4Cs — Carat, Cut, Clarity, and Color — using up-to-date Rapaport values rates. Whether you're dealing in certified solitaires or pointer diamonds, The Diamond Calculator helps you price stones with speed and confidence. Key Features: - Real-time Rapaport-based diamond price calculator - Reliable and accurate data - Easy selection of clarity, color, carat - Easy-to-use calculation tools - Historical price tracking - Clean, professional, user-friendly design Ideal for diamond merchants, valuers, jewelry retailers, and B2B professionals across the world.
Screenshots
Verdict
The clearest difference is update cadence: MyGemeWizard at every 2 months against TDC's every 5 months. MyGemeWizard also leads on iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MyGemeWizard ships an update every 2 months, TDC every 5 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.
| Parameter | MyGemeWizard | TDC |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 30 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Gemewizard LTD | Rapaport Diamond Calculator |
In-app purchases
MyGemeWizard
No in-app purchases
TDC
No in-app purchases








