Rap Calculator is a business utility for diamond industry professionals to calculate diamond values and broker discounts on iOS.
The App DNA
What makes this app unique?
Users hire this app to perform quick, on-the-go diamond valuation calculations, but the reliance on manual price updates forces a high-effort workflow that modern tools avoid.
For Diamond industry professionals including buyers, manufacturers, sellers, and brokers.
What does it look like?
Key features
Fetches live diamond price lists from the global source via a manual update button.
Calculates diamond value based on shape, color, clarity, and carat parameters.
Computes the net amount for brokers based on a user-defined percentage.
How much does it cost?
The app operates as a free utility with no visible subscription or in-app purchase gates.
Velocity
Dormant developmentopaqueShow more...
Rap Calculator has been inactive for over four years, with no updates or feature releases since September 2021. The development momentum is non-existent, as the app has not received any maintenance or content updates in nearly 1,800 days. Given the lack of activity, the app is classified as a zombie project.
Who built it?
OOZEE Technologies
2 apps tracked · Business
AI Photo Editor: Magic EraserUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Rap Calculator
How's the Business market?
Rap Calculator functions as a legacy utility in the Business category, with no major updates since 2021. The lack of recent development activity signals a stagnant position relative to modern, automated industry tools.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Rap Calculator
Where is it heading?
The diamond industry is shifting toward real-time, API-integrated valuation tools, leaving static, manual-entry apps like Rap Calculator increasingly obsolete. Without an immediate pivot to automated data syncing, the app will continue to lose relevance as professional users migrate to more efficient, cloud-connected alternatives.
- The four-year update gap signals the app is in maintenance-mode, which prevents it from adapting to modern, automated industry data standards.
The SWOT
- Broker discount calculator provides specialized utility for trade workflows
- Automated API-based price feeds would remove manual sync barriers
Next best moves
Automate price-list syncing because manual updates are the top friction point → increase daily active usage
The counter-intuitive read
The app's lack of updates is not just a sign of neglect…
Read the full takeSince the last report: The app's competitive positioning has been downgraded from a niche professional tool to a legacy utility, reflecting its failure to modernize data-sync mechanisms.
Bottom line
Rap Calculator provides a useful niche calculation tool, but its four-year update drought and manual sync requirement make it a high-churn risk, so the developer must prioritize automated data integration to remain relevant.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeSources
- [1] App Store, source
Report last updated