# GradFlowLab > GradFlowLab builds AI-powered apps and web platforms for jewelry identification, antique identification, wine label scanning, skin condition identification, Pokémon TCG grading, snake and bug identification, US-Japan pet travel paperwork, postage stamp valuation, AI face swap, AI talking-photo video, TOEIC test prep, offline PDF conversion, meditation, sleep sounds, markdown editing, ID photos, and Vietnamese stock analysis. ## Canonical Site - Website: https://gradflowlab.com - Sitemap: https://gradflowlab.com/sitemap.xml - Full LLM reference: https://gradflowlab.com/llms-full.txt - Contact: contact@gradflowlab.com - Supported languages: English (en), Japanese (ja) ## Products ### Jewelry Expert - URL (en): https://gradflowlab.com/en/apps/jewelry-identifier - URL (ja): https://gradflowlab.com/ja/apps/jewelry-identifier - Category: AI Identification - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: Free with Pro subscription ($5.99/week, $24.99/year, or $29.99 lifetime). - Summary: AI-powered jewelry identification — snap a photo to get materials, gemstones, hallmarks, style era, condition, and estimated value. ### Markdown Notes - URL (en): https://gradflowlab.com/en/apps/markdown-notes - URL (ja): https://gradflowlab.com/ja/apps/markdown-notes - Category: Productivity - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: $9.99 one-time purchase. - Summary: Distraction-free markdown editor with live preview, vault organization, graph view, and export to HTML/PDF/Markdown. ### Buddha AI - URL (en): https://gradflowlab.com/en/apps/buddha-ai - URL (ja): https://gradflowlab.com/ja/apps/buddha-ai - Category: Lifestyle & Wellness - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: Free with Premium subscription ($2.99/week, $7.99/month, or $59.99/year). - Summary: AI dialogue based on Buddhist teachings for daily guidance, with breathing meditation and multiple tradition choices. ### Zen Heart - URL (en): https://gradflowlab.com/en/apps/zen-heart - URL (ja): https://gradflowlab.com/ja/apps/zen-heart - Category: Lifestyle & Wellness - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: Free with Premium subscription ($2.99/week, $7.99/month, or $59.99/year). - Summary: AI-powered Zen dialogue with three virtual Zen masters, daily Zen phrases, and a reflection journal. ### White Noise Sleep Sounds - URL (en): https://gradflowlab.com/en/apps/white-noise-sleep-sounds - URL (ja): https://gradflowlab.com/ja/apps/white-noise-sleep-sounds - App Store: https://apps.apple.com/us/app/white-noise-sleep-sounds-baby/id6740737671 - Category: Health & Fitness - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: Free with Pro access ($2.99/month, $24.99/year, or $99.99 lifetime). - Summary: Soothing soundscapes mixing nature sounds, white noise, pink noise, and lullabies with adjustable timer and AirPlay support. ### Flash AI Photo - URL (en): https://gradflowlab.com/en/apps/flash-ai-id-photo - URL (ja): https://gradflowlab.com/ja/apps/flash-ai-id-photo - App Store: https://apps.apple.com/us/app/flash-ai-id-photo-maker-pro/id6739249635 - Category: Photo & Video - Platforms: iOS, iPadOS, macOS, visionOS - Pricing: Free. - Summary: AI-powered ID photo maker for passport, visa, and license photos — background removal, face detection, and compliance checking. ### Skin Condition Identifier Lens - URL (en): https://gradflowlab.com/en/apps/skin-condition-identifier - URL (ja): https://gradflowlab.com/ja/apps/skin-condition-identifier - Category: AI Identification (Utilities / Reference on App Store) - Platforms: iOS, iPadOS - Pricing: Free with 1 recent scan; Skin Lens Pro $4.99/week or $24.99/year (over 60% savings). - Summary: AI skin condition identifier (Skin Lens) — identifies moles, rashes, acne, eczema, and psoriasis from a photo in under 10 seconds with confidence ratings and urgency guidance. ### StockShield - URL (en): https://gradflowlab.com/en/apps/stockshield - URL (ja): https://gradflowlab.com/ja/apps/stockshield - Website: https://stockshield.xyz - Category: Finance - Platforms: Web - Pricing: Free with Premium ($9.99/month) and Professional ($49.99/month) plans. - Summary: Governance-first Vietnamese stock analysis — safety scores, red-flag alerts, and compliance reports for international investors. ### Pokémon TCG Scanner - URL (en): https://gradflowlab.com/en/apps/pokemon-tcg-scanner - URL (ja): https://gradflowlab.com/ja/apps/pokemon-tcg-scanner - Category: Collectibles - Platforms: iOS, iPadOS - Pricing: Free with Pro unlocks. - Summary: Pokémon TCG scanner with live eBay sold comps, calibrated PSA-style sub-grades, English and Japanese set detection, and a worth-grading calculator. ### Snake ID - URL (en): https://gradflowlab.com/en/apps/snake-id - URL (ja): https://gradflowlab.com/ja/apps/snake-id - Category: AI Identification - Platforms: iOS, iPadOS - Pricing: Free; danger rating is always free on every scan. - Summary: Identify a snake from one photo and get a venom-first triage (venomous, mildly venomous, harmless) with species ID and 'what to do' guidance. ### Pet Passport: US-JP Travel - URL (en): https://gradflowlab.com/en/apps/pet-passport - URL (ja): https://gradflowlab.com/ja/apps/pet-passport - Category: Travel & Pets - Platforms: iOS, iPadOS - Pricing: Free. - Summary: Bilingual app that organizes US-Japan pet travel — OCR vaccine records, rabies titer 180-day FAVN countdowns, and APHIS 7001 / MAFF Advance Notification PDF pre-fill. ### BugLens - URL (en): https://gradflowlab.com/en/apps/bug-identifier - URL (ja): https://gradflowlab.com/ja/apps/bug-identifier - Category: AI Identification - Platforms: iOS, iPadOS - Pricing: Free with BugLens Pro for unlimited scans and per-species first-aid tips. - Summary: Identify bugs, spiders, stinging insects, and snakes from a photo — danger rating shown first, never paywalled. ### AnyFace - URL (en): https://gradflowlab.com/en/apps/anyface - URL (ja): https://gradflowlab.com/ja/apps/anyface - Web app: https://swapanyface.com/app - Website: https://swapanyface.com - Category: Photo & Video - Platforms: iOS, iPadOS - Pricing: Free first credit. One-time credit packs (10, 30, 100, 500). No subscription, no ads, no watermark. - Summary: One-tap AI face swap for photos and short video clips, with a private device-only face library, multi-face targets, HD toggle, and automatic credit refund on failure. ### TalkFace - URL (en): https://gradflowlab.com/en/apps/talkface - URL (ja): https://gradflowlab.com/ja/apps/talkface - Category: Photo & Video - Platforms: iOS, iPadOS - Pricing: 6 free credits on first launch. One-time credit packs (Starter 10, Standard 30, Pro 100, Whale 500). No subscription. - Summary: Turns any portrait into a short 9:16 talking video with motion, voiced dialogue, and lip-sync — six vibes (Roast, Confession, Throwback, Funny, Birthday, Random), three candidate scripts per generation, Fast and Quality (Seedance 2.0) tiers. ### Stamp Identifier - URL (en): https://gradflowlab.com/en/apps/stamp-identifier - URL (ja): https://gradflowlab.com/ja/apps/stamp-identifier - Category: Collectibles - Platforms: iOS, iPadOS - Pricing: Free. - Summary: AI postage stamp identification with country, year, catalog number, rarity, market value, and Scott/Stanley Gibbons/Michel/Yvert lookup. ### TOEIC Ready - URL (en): https://gradflowlab.com/en/apps/toeic-ready - URL (ja): https://gradflowlab.com/ja/apps/toeic-ready - Website: https://www.readyday.app - Category: Test Prep - Platforms: iOS, iPadOS - Pricing: Free diagnostic + vocab deck; Pro ~$79/year with intro trial, or weekly. - Summary: AI-powered TOEIC L&R prep that predicts the calendar day you'll hit your target score (IRT + Monte Carlo), with adaptive practice for all 7 parts, mock tests, and a written refund guarantee. ### Vintiq - URL (en): https://gradflowlab.com/en/apps/antique-identifier - URL (ja): https://gradflowlab.com/ja/apps/antique-identifier - Category: AI Identification - Platforms: iOS, iPadOS - Pricing: Free with limited scans per week; Weekly, Annual, and Lifetime plans in-app. - Summary: AI antique and collectible scanner — snap a photo for origin, era, materials, maker's marks, estimated value, price trend, condition/rarity rating, and authenticity tips across 9 categories. ### PDF Converter: Offline - URL (en): https://gradflowlab.com/en/apps/pdf-converter - URL (ja): https://gradflowlab.com/ja/apps/pdf-converter - Category: Productivity - Platforms: iOS, iPadOS - Pricing: $9.99 one-time purchase. No subscription, no account, no ads. - Summary: Fully on-device document toolkit — Word to PDF, PDF to Word (RTF), image to PDF, PDF to image, and camera scan to searchable PDF with English/Japanese OCR. No upload, no cloud, works in airplane mode. ### Wine Identifier: Label Scanner - URL (en): https://gradflowlab.com/en/apps/wine-identifier - URL (ja): https://gradflowlab.com/ja/apps/wine-identifier - Category: Food & Drink - Platforms: iOS, iPadOS - Pricing: Free identification every day; Pro $4.99/week, $24.99/year, or $29.99 lifetime. - Summary: Scan any wine label for a sommelier-style breakdown — grape varieties, region, vintage, tasting profile, food pairings, serving temperature, aging potential, and an estimated USD value range, with an on-device cellar. ### Bird ID — Birdwatching - URL (en): https://gradflowlab.com/en/apps/bird-identifier - URL (ja): https://gradflowlab.com/ja/apps/bird-identifier - Category: AI Identification - Platforms: iOS, iPadOS - Pricing: Free. First identification each day is free; Pro unlocks unlimited IDs, full life list, regional accuracy, and priority AI. - Summary: Snap a photo to identify any bird in seconds, with the field marks, habitat, range, voice, and color-coded IUCN conservation status to back it up, plus an on-device life list. Regional accuracy uses approximate region only, never precise GPS. ### Butterfly Identifier - URL (en): https://gradflowlab.com/en/apps/butterfly-identifier - URL (ja): https://gradflowlab.com/ja/apps/butterfly-identifier - Category: AI Identification - Platforms: iOS, iPadOS - Pricing: Free with Pro subscription (Weekly, Annual, or Lifetime). - Summary: AI field guide that names a butterfly from a photo — species, confidence, IUCN conservation status, host and nectar plants, and look-alikes explained. Optional wings-closed underside shot boosts accuracy; every ID saves to a searchable collection. ## Key Content - Apps index (en): https://gradflowlab.com/en/apps - Apps index (ja): https://gradflowlab.com/ja/apps - Articles index (en): https://gradflowlab.com/en/articles - Articles index (ja): https://gradflowlab.com/ja/articles - Support (en): https://gradflowlab.com/en/support - Support (ja): https://gradflowlab.com/ja/support - Privacy Policy (en): https://gradflowlab.com/en/privacy - Privacy Policy (ja): https://gradflowlab.com/ja/privacy - Terms and Conditions (en): https://gradflowlab.com/en/terms - Terms and Conditions (ja): https://gradflowlab.com/ja/terms - How to Identify Jewelry with AI: https://gradflowlab.com/en/articles/how-to-identify-jewelry-with-ai - How to Identify Gemstones at Home: https://gradflowlab.com/en/articles/how-to-identify-gemstones-at-home - Understanding Jewelry Hallmarks: https://gradflowlab.com/en/articles/understanding-jewelry-hallmarks - Jewelry Value Estimation Guide: https://gradflowlab.com/en/articles/jewelry-value-estimation-guide - How to Identify Skin Conditions With AI: https://gradflowlab.com/en/articles/how-to-identify-skin-conditions-with-ai - Obsidian Alternative Without a Monthly Subscription: https://gradflowlab.com/en/articles/obsidian-alternative-no-subscription - How to Talk to Buddha AI — Daily Reflection Guide: https://gradflowlab.com/en/articles/talk-to-buddha-ai-chatbot - Talk to a Zen Master AI — Koans and Daily Zen: https://gradflowlab.com/en/articles/talk-to-zen-master-ai - Rain Sounds With Sleep Timer for iOS: https://gradflowlab.com/en/articles/rain-sounds-with-sleep-timer-ios - US Passport Photo at Home — iPhone App Guide: https://gradflowlab.com/en/articles/us-passport-photo-at-home-iphone-app - Vietnamese Stock Safety Check — A Free Tool: https://gradflowlab.com/en/articles/vietnamese-stock-safety-check-tool - Pokémon Card PSA Grade Estimator App Guide: https://gradflowlab.com/en/articles/pokemon-card-psa-grade-estimator-app - Is This Snake Venomous? An App That Helps: https://gradflowlab.com/en/articles/is-this-snake-venomous-app - USDA APHIS 7001 Form Generator App: https://gradflowlab.com/en/articles/usda-aphis-7001-form-generator-app - Identify a Bug Bite From a Photo — An App That Helps: https://gradflowlab.com/en/articles/identify-bug-bite-from-photo-app - Scott Catalog Number Lookup App for Stamps: https://gradflowlab.com/en/articles/scott-catalog-number-lookup-app ## Usage Notes - All pages are available in English (/en/) and Japanese (/ja/). - Treat app and article URLs above as canonical references. - Use article pages for plain-language explanations and app pages for product facts. - AI analysis is a first-pass research tool, not a certified appraisal.