ZkBa vs Gem Genius AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZkBa
Discover the latest deals and discounts from major online retailers worldwide. Find high-quality products at bargain prices and enjoy cost-effective online shopping.
- Latest deal alerts
- Global e-commerce discounts
- High-quality products
- Bargain prices
- Cost-effective shopping
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ZkBa，一款汇聚最新活动线报资讯的应用。网罗了海内外各大知名电商购物网站的折扣优惠商品，让你用白菜价格就能买到高品质的商品，从此告别大海捞针的商品挑选，享受高性价比的网购。 如有任何问题或建议，可发邮件至208638785@qq.com
Gem Genius AI
This app serves as a comprehensive guide for gemstones and jewelry, offering tools for both professionals and consumers. It provides real-time pricing, certification verification, virtual try-on, and design capabilities for jewelers, alongside educational resources and identification guides for consumers.
- Real-time pricing and market trends
- Diamond and gemstone certification scanner
- Augmented reality jewelry try-on
- Custom jewelry design tools
- Diamond education and buyer's guide
- Ethical sourcing information
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Gem Genius: Your On-Device Gemstone & Diamond Companion Meet the rebuilt Gem Genius — a free, privacy-first app for anyone who loves gemstones, diamonds, and fine jewelry, whether you're a collector, a shopper, or just curious what's in your jewelry box. AI Jeweler Chat - On-device AI conversation powered by Apple's on-device models — no API key, no network call, no data leaving your phone - Grounded in the app's own encyclopedia for accurate answers - Recognizes gems mentioned in conversation and shows their photo inline Learn - Encyclopedia: 20 gemstones with origins, hardness, treatments, care instructions, and price ranges - Dictionary: 69 terms covering the 4 Cs, cut shapes, settings, and lab-created materials - Hallmark database: 21 assay and maker's marks by country - Diamond 4Cs visualizer: an interactive 2D breakdown plus a rotating 3D diamond with a Tilt to Sparkle mode - On-device gem identification from a photo, color-matched against the encyclopedia Buying Center - Step-by-step buying guide, red-flag checklist, and budget planner - A clearly labeled educational value estimator (not a live market feed) - Live industry news from Rapaport and JCK, each story shown with its real editorial photo - Untracked links to reputable places to buy, grade, insure, or sell Vault - A private, on-device collection tracker for your own pieces — photos, purchase details, and estimated value - Export your data as CSV for free, or as a polished PDF report with Gem Genius Premium Everywhere You Need It - Home Screen widget for Gem of the Day - Siri & Shortcuts support for birthstone and gem-of-the-day questions - Spotlight search across every gemstone, term, and hallmark - Shareable branded cards for any gemstone or term EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Gem Genius is free to download. Gem Genius Premium is an optional subscription that unlocks PDF vault reports, and Gem Genius Pro Tools is a one-time $5 unlock for advanced identification, branded reports, an AI Buying Coach, hallmark research, pro calculators, multi-folder vaults, and printable care cards. Nothing previously included has been moved behind a paywall.
Screenshots
Verdict
ZkBa and Gem Genius AI both sit at 3.2 stars, but that hides the real split: 52% of ZkBa's written reviews are positive against 0% of Gem Genius AI's. ZkBa also leads on in-app purchases (none vs 5) and update cadence (every 4 months vs every 24 months). Gem Genius AI's advantage is price ($0.99 vs $1.99). On rating, ads, monetization model and chart position 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
ZkBa costs $1.99 and Gem Genius AI $0.99 up front. Gem Genius AI sells 5 in-app purchases, starting at $4.99 per month. ZkBa asks for nothing beyond the download.
ZkBa holds the better App Store score, 3.2 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 52% of ZkBa's written reviews are positive against 0% of Gem Genius AI's.
ZkBa ships an update every 4 months, Gem Genius AI every 24 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | ZkBa | Gem Genius AI |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 3.2 (6 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 52.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 4 months — better | Every 24 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Best chart rank | #87 | #86 — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 22 MB | 24 MB |
| Age rating | 17+ | 17+ |
| Developer | 树铎 许 | Trisphere Apps LLC |
Customer experience
ZkBa
Gem Genius AI
In-app purchases
ZkBa
No in-app purchases
Gem Genius AI
- Gem Genius Premium — Monthly$4.991 Month
- Gem Genius Premium — Yearly$39.991 Year
- Tools — Special Offer$2.99
- Gem Genius Pro Tools$4.99
- Gem Genius Premium — Lifetime$79.99
