We build AI-native products that solve real problems: photo-to-listing for resellers, to ingredient safety scanning, collectible card games, and physics simulators. All live, all free to try.
AI-native tools that solve real problems. Snap a photo, get answers.
Our first product. Snap a photo of anything you want to sell. AI identifies the item, researches real eBay sold prices, and generates optimized listings for eBay and Facebook Marketplace. Ready to post in seconds, auto-posting included.




































Applesauce is built by William Wyatt, a PhD economist and AI researcher at Claremont Graduate University, with a background in physics and mathematics.
14 years of Python and C++. Published research on how LLMs reason, decide, and take risks. 136+ open-source repos. Everything from computer vision tools to market simulation engines.
Now channeling all of that into shipping products that solve real problems. Fast, AI-native, and built to work on day one.
Read more at gradstudent.meThe fastest way to turn a photo into a listing. Snap a picture of anything you want to sell, and Sell identifies it, writes the title and description, pulls real-time eBay sold comps, estimates shipping costs via Pirate Ship, and gives you a data-backed price, all in seconds.
Built for resellers who source at thrift stores, estate sales, and garage sales. Source Mode gives you a quick buy/pass signal right at the shelf, no need to research on your phone. Once you're ready to list, post directly to eBay and Facebook Marketplace without leaving the app.
The Behavioral Game Lab is an interactive research platform that tests whether large language models behave like rational agents or like humans. Run classic behavioral economics experiments — Prisoner's Dilemma, Dictator Game, Ultimatum Game, Public Goods, Trust Game, Volunteer's Dilemma — and compare LLM responses against peer-reviewed human benchmarks.
The key finding: system prompts switch LLMs between two cognitive modes. Without a prompt, models default to analytical game-theory reasoning (Nash equilibria, defect, keep money). With embodiment prompts ("You are human," "This is real life"), they shift to cooperative, human-like behavior. The effect size is massive — Cohen's d = 1.98, with cooperation rates swinging from 0% to 100%.
An interactive gravitational simulator that models the classic three-body problem, one of the most famous unsolved problems in physics. Three celestial bodies orbit each other in real time, creating chaotic, unpredictable trajectories that never repeat.
Customize each particle's mass and velocity, switch between torus and plane boundary conditions, toggle between eat and bounce collision modes, and follow individual bodies as they trace paths through space. A playground for chaos theory, orbital mechanics, and just watching things crash into each other.
A privacy-first video compression tool that runs entirely in your browser. Select a video, pick a quality preset, and FFmpeg compiled to WebAssembly does the rest. No file ever leaves your device. The ~30 MB engine downloads once and caches for offline use.
Supports H.264 encoding with high, medium, and low quality presets, plus a target-size mode for hitting specific file size limits. Real-time progress tracking, detailed codec stats, and a sample-based test mode that estimates output size before committing to a full encode. Works offline as a PWA.
A collectible card game where every card starts as a photo. Take a picture of anything (your cat, a sunset, a weird rock) and Tome turns it into a playable card with stats, an element, and a rarity tier. Then battle other players' cards in Card Clash.
Each card gets assigned one of eight elements (Fire, Water, Earth, Air, Light, Shadow, Electric, Nature) and a rarity from Common to Mythic. Cards have attack, defense, and speed stats generated from the image itself. Collect cards, fuse duplicates to power them up, and climb the leaderboard.
Know what's in your products. Point your camera at any food, cosmetics, supplement, or baby care label and get an instant safety report. Graze reads every ingredient, cross-references it against databases of 56 flagged food additives, 82 cosmetic ingredients of concern, and 50+ allergen keywords, then gives you a clear safety score out of 100.
Set up a personal allergen profile and get highlighted matches in every scan. No more squinting at labels or Googling ingredients one by one. Graze uses GPT vision to extract text from the messiest labels and maps each ingredient against Open Food Facts and curated safety databases.
The central index for every Applesauce service. A FastAPI app that serves as the registry, directory, and about-page aggregator for every subdomain we run. Crawlers see full server-rendered HTML; humans get a clean card grid with live status indicators.
About pages from each service are fetched server-side and cached, so search engines index real content without JavaScript. Admin access via magic link reveals private/internal services. Every new subdomain on applesauce.chat gets registered here first.
Everything we build rests on a foundation of open-source work spanning 14 years. Computer vision pipelines, blockchain IoT systems, behavioral game theory experiments, market simulation engines, causal inference toolkits, and more, all public on GitHub.
Research areas include LLM behavioral alignment (how AI models reason about risk and make decisions), econometric modeling, and applied machine learning. Published work from Claremont Graduate University covers game theory, AI decision-making under uncertainty, and zero-bail policy analysis.
Got an idea? Want to collaborate? We're always building.