Best Gemstone Weight Apps

249+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated August 2026

The best gemstone weight apps on iPhone average 4.6★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Gemstone Weight Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Carat Weight CalculatorCarat Weight CalculatorFreeNoNoAug 2026
2Gem Weight EstimatorGem Weight EstimatorFree4.3★ (3)NoNoMay 2026
3Carats – Gem Weight & JewelryCarats – Gem Weight & Jewelry$0.993.7★ (3)NoNoAug 2026
4Midas Touch AppMidas Touch AppFreeNoNoMay 2026
5Lose It! – Calorie CounterLose It! – Calorie CounterFree4.8★ (774K)YesYesAug 2026
6Gemstone Identifier ºGemstone Identifier ºFreeNoNoAug 2026
7Daily Yoga: Fitness & WellnessDaily Yoga: Fitness & WellnessFree4.7★ (4.5K)YesYesAug 2026
8Gem & Jewelry Carat CalculatorGem & Jewelry Carat CalculatorFree5.0★ (1)NoNoAug 2026

Top Picks for Gemstone Weight

Carats – Gem Weight & Jewelry#3

Carats – Gem Weight & Jewelry by Verosocial Studio

Carat Estimator & Converters
Worth Considering
🔧 Utilities
3.7(3 ratings)
$0.99
Carats – Gem Weight & Jewelry screenshot 1
Carats – Gem Weight & Jewelry screenshot 2
Carats – Gem Weight & Jewelry screenshot 3
Carats – Gem Weight & Jewelry screenshot 4

Easily calculate the carat weight of diamonds and gemstones by entering their dimensions. This tool is essential for jewelers, collectors, and anyone buying or selling precious stones, offering accurate and instant results.

More Gemstone Weight apps to explore

4
Midas Touch App
Midas Touch App
Midas Touch App
Midas Touch
Free
💼 Business
(0)
5
Lose It! – Calorie Counter
Lose It! – Calorie Counter
Lose It! – Calorie Counter
Food Tracker for Weight Loss
Free

This app helps users achieve their weight loss goals by tracking calorie intake, nutrition, and exercise. It offers features like AI-powered meal logging, barcode scanning, and personalized diet plans to simplify the journey to a healthier lifestyle.

Calorie trackingWeight loss planningAI voice meal logging
💪 Health & Fitness
(774K)
free with in-app purchases
6
Gemstone Identifier º
Gemstone Identifier º
Gemstone Identifier º
Identify your gemstone
Free
🔧 Utilities
(0)
7
Daily Yoga: Fitness & Wellness
Daily Yoga: Fitness & Wellness
Daily Yoga: Fitness & Wellness
Tai Chi & Pilates & Chair Yoga
Free

This app offers a comprehensive yoga and fitness experience for all levels. It provides a wide variety of guided classes, including classic yoga, chair yoga, and Pilates, along with personalized programs and meditation sessions. Users can track their progress and download classes for offline use.

Guided yoga and Pilates classesChair and wall yoga optionsPersonalized custom yoga programs
💪 Health & Fitness
(4.5K)
free with in-app purchases
8
Gem & Jewelry Carat Calculator
Gem & Jewelry Carat Calculator
Gem & Jewelry Carat Calculator
Gem Pricing & Weight Toolkit
Free

This app provides professional tools for calculating gemstone weight, pricing, and setting costs. It helps jewelers, traders, and enthusiasts make informed decisions with features like currency conversion and duty estimation.

Carat Weight EstimatorPrice & Profit CalculatorMetal Setting Cost Calculator
💼 Business
(1)
free
9
Mayer & Watt
Mayer & Watt
Mayer & Watt
by Geoffrey Watt
Free

Explore the world of colored gemstones with this app, featuring high-quality images of current and past inventory. Discover detailed information on popular gemstones, including their lore, history, and science, making it a valuable resource for both jewelry professionals and consumers.

Colored gemstone showcaseHigh-quality gemstone imagesGemstone encyclopedia (lore, history, science)
📚 Education
(6)
free
10
Gemfinity : Gemstone Valuer
Gemfinity : Gemstone Valuer
Gemfinity : Gemstone Valuer
Gemstone Price Checker
Free

This AI-powered platform provides real-time market value insights for gemstones and diamonds. It helps traders, buyers, and investors avoid overpaying by comparing quoted prices to actual worth. Gain instant, data-driven valuations and educational insights into gemstone pricing.

AI-powered gemstone valuationReal vs. market price comparisonSmart analysis dashboard
💼 Business
(0)
free
11
Guide Voillot Gems
Guide Voillot Gems
Guide Voillot Gems
by Maxime Voillot
Free
📚 Books
(0)
12
AV Gemstone
AV Gemstone
AV Gemstone
Certified Natural Gemstons
Free
🛍️ Shopping
(0)
13
Gemstone Identifier: GemScanAI
Gemstone Identifier: GemScanAI
Gemstone Identifier: GemScanAI
Rock Scan & Mineral Identifier
Free

Instantly identify gemstones, rocks, and minerals using AI. Get detailed reports, chat with an AI expert, and organize your discoveries. Perfect for enthusiasts and collectors.

AI-powered identificationDetailed gemstone reportsChat with AI Gem Expert
📚 Education
(1)
freemium
14
Gems Harbor
Gems Harbor
Gems Harbor
Buy & Sell Gemstones Worldwide
Free
💼 Business
(0)
15
Best Gems
Best Gems
Best Gems
The Premier Gem Community
Free
💼 Business
(0)
16
iCanGems
iCanGems
iCanGems
iCanGems
Free
🛍️ Shopping
(0)
17
GemID: Gemstone Identification
GemID: Gemstone Identification
GemID: Gemstone Identification
exam study. Identify & catalog
Free

Identify gemstones using optical and physical properties like a professional. Features detailed guidance for instrument testing and collection management. Includes a database of 119 gems, from common to rare.

Systematic gemstone identificationOptical and physical property analysisInstrument test guidance
🔧 Utilities
(1)
free with in-app purchases
18
JL White Fine Gemstones
JL White Fine Gemstones
JL White Fine Gemstones
by Jeffery White
Free

Explore the world of colored gemstones and jewelry. Browse galleries for inspiration, start custom design projects, and get instant notifications for newsletters. Easily contact the developer for inquiries or to initiate purchases.

Colored gem educationGem and jewelry galleriesCustom design project initiation
🛍️ Shopping
(3)
ad-supported
19
GemstoneAI: Gem & Jewelry Scan
GemstoneAI: Gem & Jewelry Scan
GemstoneAI: Gem & Jewelry Scan
Jewelry & Gem Value Scanner
Free

Instantly identify and value gemstones and jewelry using your phone's camera. Get data-backed market valuations, track your collection's worth, and access detailed market intelligence for over 200 gemstone varieties.

Instant gemstone identificationData-backed market valuationsDigital jewelry box collection
🔍 Reference
(4)
freemium
20
Mila's Weight Converter
Mila's Weight Converter
Mila's Weight Converter
Metric to Imperial Calculator
Free

This app offers a comprehensive solution for converting various weight and mass units. It supports metric, imperial, troy, and force units, along with compound combinations and custom precision settings. Designed for ease of use with features like favorites and dark mode.

Converts 25+ weight and mass unitsSupports metric, imperial, troy, and force unitsHandles compound unit combinations
🔧 Utilities
(37)
free with in-app purchases

FAQ about Gemstone Weight

Are there free gemstone weight apps for iPhone?
Yes — 19 of the top gemstone weight apps we rank are free to download, including Carat Weight Calculator and Gem Weight Estimator.
Carat Weight Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ gemstone weight apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.