206+ iOS apps curated and reviewed
Out of 206+ dioptase apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 2 |  | Free | 2.0★ (1) | No | No | May 2026 |
| 3 |  | Free | 4.7★ (75K) | Yes | Yes | Jul 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | Free | 4.9★ (143K) | Yes | No | Jul 2026 |
| 6 |  | Free | 4.6★ (2.5K) | Yes | Yes | Jul 2026 |
| 7 |  | Free | 4.4★ (3K) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.5★ (2.8K) | No | No | Jul 2026 |
This app provides essential tools for radio and satellite communication engineers. It includes calculators and analysis features for antenna parameters, frequency calculations, link budgets, and modem performance. It also offers miscellaneous utilities for RF engineering tasks.
This utility app assists radio engineers with common calculations. It allows for adding and subtracting dB values and converting various radio engineering metrics like noise factor and return loss.
Instantly identify rocks, minerals, and gemstones by taking a photo. Access a comprehensive encyclopedia with detailed information on each stone, learn to distinguish real from fake gems, and explore their properties. The app also includes a metal detector and expert consultation.
Easily renew your contact lens prescription with a quick in-app vision exam and order your lenses from the world's largest inventory. Get fast shipping and save with insurance benefits.
Instantly identify rocks, crystals, and minerals by uploading a photo. Explore their history, meaning, and energetic qualities. Organize your collection and connect with experts for insights.
Instantly identify rocks, minerals, and gems by snapping a photo. Explore detailed profiles, manage your personal collections, and keep a log of all your discoveries. Become a geology expert with this comprehensive guide.
Measure your Pupillary Distance (PD) accurately with this app, leveraging advanced technology for personalized glasses fitting. It transforms your iPhone into a measurement device, enabling confident online prescription glasses purchases.
Transform your iPhone into a precise 3D scanner for measuring pupillary distance and segment height. Get accurate measurements for ordering prescription glasses online with confidence, eliminating the need for manual tools.
This comprehensive mobile reference work provides detailed information on all chemical elements. It features a molar mass calculator, interactive visualizations, and offline access, making it an indispensable tool for students, educators, and chemistry enthusiasts.
Shop the latest contact lenses and eye beauty products online. Discover a wide selection of colored and prescription lenses from global brands not found locally, all at competitive prices. Browse by brand, color, or replacement period with high-quality images and detailed descriptions.
Easily order and track deliveries of natural drinking water for your home or office. This app offers various product sizes and includes a hydration partner feature to monitor daily water intake and set reminders.
Explore a comprehensive A-Z guide to over 500 crystals and minerals, offering geological and metaphysical details. Catalog your personal collection with photos, notes, and interactive 3D models. Discover new crystals through quizzes, games, and advanced search filters.
Discover a wide selection of luxury jewelry, including gold, silver, and diamond pieces. Personalize your items with custom engravings and enjoy a secure, fast shopping experience with dedicated customer support.
Shop a vast selection of trendy eyeglasses and sunglasses for all ages. Discover prescription eyewear, blue light blocking lenses, and premium brands. Features include AI face analysis and virtual try-on to find your perfect fit.
Capture incredibly detailed, high-resolution photos of your eyes using advanced AI. Discover hidden shades and patterns, and create unique art and personalized gifts from your eye photos. Share your unique creations with the world.
Explore an interactive periodic table with 3D models and AR features. This app offers an AI-powered tutor for simplified explanations, a reaction solver, and a molar mass calculator. It's a comprehensive reference for students and professionals to learn chemistry effectively.
Instantly identify rocks, crystals, minerals, and gems by simply taking a photo. Access a comprehensive library of stones, learn to distinguish real from fake, and even create your own rock collections. Connect with experts for deeper insights.
This app transforms your device into a powerful magnifying glass and zoomable camera. Easily read small print, inspect details, or view objects up close with infinite zoom, image filters, and a built-in flashlight. It's designed for clarity and ease of use in any lighting condition.
Transform your device into a powerful magnifying glass with an integrated flashlight. Offers multiple focus modes, image filters, and zoom levels for enhanced readability. Freeze and share magnified images easily.