Rap Calculator vs CARATRATE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rap Calculator
Calculate the value of diamonds using live global pricing and customizable parameters like shape, color, clarity, and carat. Easily update the Rap price list with a single touch to determine diamond prices and broker discounts.
- Live global diamond pricing
- Calculate value by shape, color, clarity, carat
- One-touch Rap price list updates
- Calculate broker discounts
- Easy to use for buyers, manufacturers, sellers, brokers
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Rap Calc fetch the live Global price (from Global site) so you can calculate the value of the diamond with your discount or back %. It is very easy to use for Diamond Buyers, Manufacturers, Sellers and Brokers to calculate the price of the diamond. With Rap Calc you can calculate the price of the diamond with different parameters like Shape, Color, Clarity and Carat. Features -------------------------------------- > Updates the Rap price list with one touch no need any details > Calculates the value of the Diamond based on provided parameters > Update the latest Global price every Friday by touching the update > Calculates the Less amount for broker based on the percentage given. How to Use : -------------------------------------- > When you open Rap Calc first time on your mobile, you need to first update the global price of the diamonds. Please follow the below process. > Click on "UPDATE RAP" button at the top right corner of the application. > On Update Global Price page you need to click on "YES, UPDATE PRICE" button. > That's it. Now you can see the latest global price of the diamonds.
CARATRATE
This app simplifies the complex valuation of natural diamonds. It provides users with pricing information to assist in buying or selling diamonds, aiming to make the process straightforward for even experienced traders.
- Diamond valuation
- Diamond pricing
- Natural diamond focus
- Buying/selling assistance
- Simple interface
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CARATRATE "Real diamond pricing made really simple" It is said every diamond is unique, one in a billion. That makes it's valuation/pricing very complicated. Even people who trade in diamonds for many years face difficulties while pricing diamonds. CARATRATE is an endeavour to facilitate those who deal in natural diamonds. Check CARATRATE price before buying/selling a diamond.
Screenshots
Verdict
The clearest difference is review sentiment: CARATRATE at 100% against Rap Calculator's 40%. CARATRATE also leads on rating (5.0 vs 3.3). Rap Calculator's advantage is iOS requirement (10.0 vs 15.0). On price, ratings volume, update cadence and ads 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.
CARATRATE holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 40% of Rap Calculator's written reviews are positive against 100% of CARATRATE's.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 29, 2026.
| Parameter | Rap Calculator | CARATRATE |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | OOZEE TECHNOLOGIES | Dia Analytics LLP |
Customer experience
Rap Calculator
CARATRATE
In-app purchases
Rap Calculator
No in-app purchases
CARATRATE
No in-app purchases
