The five diamond price calculator apps used across the professional diamond trade are DiamntX, RapNet, DRC, DXE, and EZCalc.
DiamntX is the only standalone diamond calculator app that is free forever, works fully offline after a single sync, supports multi-stone parcel pricing, and generates branded price cards shareable via WhatsApp.
RapNet offers a powerful calculator as part of its trading platform. DRC and EZCalc are available on both iOS and Android. DXE is iOS only.
Not every diamond calculator app is built the same and the difference only becomes clear when you need it most: mid-negotiation, on a show floor, or pricing a parcel of 40 stones under time pressure.
What We Compared Across These Diamond Calculator Apps
Each diamond price calculator app was assessed purely on its calculator capability, covering the same criteria that define what professionals need from a diamond pricing app: rate access, offline reliability, output quality, platform availability, and calculator-specific features.
Platform pricing, marketplace features, and trading infrastructure were excluded since this comparison is about the best diamond calculator app functionality only.
The 5 Best Diamond Price Calculator Apps in 2026
1. DiamntX Calculator by Sarvadhi Solutions
DiamntX Calculator is a standalone diamond calculator app built exclusively for professional diamond pricing. The entire product is the calculator. It is available on iOS and Android and is free forever with no subscription and no trial expiry.
The calculator syncs live Rapaport rates automatically on the weekly publication cycle and caches them locally for full offline access after a single sync. It calculates accurately without Wi-Fi or mobile data from that point forward. Multi-stone combination pricing allows the entire parcel matrix of up to 50 stones to be priced on one screen simultaneously. Smart Carat Lock holds the carat weight while color and clarity are adjusted for rapid grade comparisons without re-entering data. Multi-currency switching covers USD, INR, EUR, and AED in one tap. Every calculation produces a branded price card carrying the trader's company name and logo, shareable via WhatsApp from within the app in a single step. Calculation history saves every quote automatically.
Verdict: The only free forever standalone diamond calculator that delivers full offline access, multi-stone parcel pricing, and professional branded output. Trusted by Ankit Gems, Ashclair, Co Diamond, Elvee, PLD, and PureYou.
2. RapNet Diamond Price Calculator
RapNet's diamond price calculator is a feature within the RapNet trading platform, available through their iOS and Android app and on desktop web. It is not a standalone calculator app. Accessing the calculator requires a RapNet membership.
The calculator takes shape, size, color, and clarity as inputs and returns the Rapaport List Price per carat and the total price for the stone. It also surfaces the current lowest and average asking prices for similar diamonds on the RapNet network, giving live market context alongside the calculated price. Additional calculator features include multi-currency conversion, a compare function for up to 10 diamonds simultaneously, a recut calculator, a melee calculator, and export to Excel.
Verdict: The most data-rich calculator in this comparison for professionals already within the RapNet ecosystem. Not accessible as a standalone tool and requires membership. The calculator is one part of a much broader trading platform rather than a dedicated pricing app.
3. DRC (Diamond Rate Calculator) by Dharma Tech
DRC is available on both iOS and Android. The iOS version on the App Store is a separate build with different pricing.
The calculator prices stones based on the Rapaport rate list. Features include sharing diamonds in formatted text, saving and editing sales reports, generating a report with total price, average price per carat, and average discount across multiple stones, a recut calculator, and a GIA cut estimator in beta. Certificate download is available for GIA, HRD, and IGI stones. A B2B diamond marketplace is integrated alongside the calculator. Price list updates are pulled each time the app is opened.
Note: Multiple recent reviews on the iOS App Store report that the Rapaport reference stopped working correctly following a 2025 update. The Android version shows a stronger rating and higher volume of active reviews. Check the current review status on your platform before downloading.
Verdict: One of the most downloaded diamond calculator apps on Android with strong feature depth including report generation and certificate access. iOS reliability should be verified against current reviews before committing.
4. DXE Price Calculator by DiamondXE Private Limited
DXE is a free diamond price calculator app available on iOS only. No Android version is available.
The calculator prices diamonds using shape, size, color, clarity, and carat as inputs with a discount percentage applied. Price list updates with a single tap refresh and no additional credentials are required. Multi-currency conversion is included. Certificate report access is available within the app. A gold rate calculator and ring sizer are supplementary features. The app does not support multi-stone parcel calculation and does not produce a branded or shareable price card.
Verdict: A clean, free, single-stone calculator for iOS users who need straightforward Rapaport-based pricing. Limited to iOS only, single-stone calculation, and no professional output format.
5. EZCalc Diamonds by ADIRsoft
EZCalc Diamonds is available on both iOS and Android. It has 17 years of development history across platforms and is used by wholesalers and jewellers across the trade.
The calculator prices stones based on the Rapaport price list. Important: EZCalc requires a valid Rapaport username and password to update price lists. The app does not include Rapaport rate data independently and users must hold an active Rapaport account. Calculator features include stone price calculation by specification, the M+ comparison feature for evaluating two calculations side by side, sales report saving and email sharing, RapNet diamond search integration, a recut profitability calculator, and access to diamond auctions and tenders.
Verdict: A feature-complete calculator with reporting, RapNet search, and market analysis for professionals who already hold an active Rapaport account. The Rapaport credential dependency is a hard requirement that limits accessibility for those without a subscription.
Frequently Asked Questions (FAQs)
Which diamond calculator app generates shareable professional price cards?
DiamntX Calculator generates a branded price card for every calculation, carrying the users’ company name and logo alongside the stone specifications and Rapaport-referenced price. This card can be shared directly via WhatsApp from within the app in one tap. DRC supports sharing diamonds in formatted text and generating PDF-style reports. DXE and EZCalc do not produce a branded output that shares directly from the app.
Do any of these diamond calculator apps require a Rapaport subscription?
EZCalc Diamonds requires a valid Rapaport username and password to update its price list. RapNet's calculator requires a RapNet membership to access. DRC pulls price list updates without requiring a separate Rapaport account. DXE updates with a one-tap refresh and no credentials. DiamntX syncs Rapaport rates automatically with no subscription or external credentials required.
Is there a free diamond calculator app that works offline?
DiamntX Calculator is free forever and works fully offline after a single sync. It caches the Rapaport rate list locally and calculates accurately without any internet connection until the next weekly update. Among the five apps compared, DiamntX is the only one confirmed free forever with full offline capability.
Which diamond price calculator apps work on both iOS and Android?
DiamntX Calculator, DRC, and EZCalc Diamonds are available on both iOS and Android. The Android and iOS versions of DRC and EZCalc differ in their build and availability status. DXE is iOS only. RapNet is available on iOS and Android, but as a trading platform app rather than a standalone calculator.
Which is the best diamond calculator app for professional traders?
DiamntX Calculator is the best diamond calculator app for professionals who need a standalone tool that works anywhere. It is the only free forever option with full offline capability, multi-stone parcel pricing, multi currency support, and branded price card output via WhatsApp and other messaging channels.
Conclusion
Five diamond calculator apps, five different approaches to the same professional need. RapNet and EZCalc serve professionals already inside the Rapaport ecosystem. DRC has the widest Android reach. DXE covers basic single-stone iOS use. DiamntX is the only standalone option that is free forever, works fully offline, prices parcels, and produces branded outputs without requiring any external credentials or subscription.
The best diamond calculator app for a professional is the one that works in every situation the trade puts you in
DiamntX Calculator is free. Download it, sync it once, and it is ready for every buyer conversation, show floor, and parcel negotiation you walk into. When your operation needs full inventory management, memo tracking, and trading infrastructure alongside your pricing workflow, the DiamntX Platform covers the rest. Book your demo now to see how it can help your business.
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