Shipping products

AI tools
that
just work.

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.

136 Open Source Repos
14 Years Coding
7 Products
1 PhD
Products

What we're building

AI-native tools that solve real problems. Snap a photo, get answers.

C
D
C
3, 3cooperate
0, 5exploited
D
5, 0tempt
1, 1defect
Coop 63%
Give 28%
Bias 50%
Human baselines
Live

Game Lab

Do LLMs behave like rational agents or like humans? Play live rounds of the Prisoner's Dilemma, Dictator Game, and 4 more. System prompts flip cooperation from 0% to 100% (Cohen's d = 1.98).

fastapi behavioral econ 6 games 270+ prompts
Play a Game →
Live

Three Body

Interactive three-body gravitational simulator. Watch chaotic orbital dynamics unfold in real time. Tweak mass, velocity, and boundary modes. Torus or plane. Eat or bounce.

physics webgl n-body chaos theory
Launch Simulator →
73% smaller
before
248 MB
after
67 MB
✓ 181 MB saved
Live

Compress

Shrink any video right in your browser. FFmpeg runs locally via WebAssembly. Nothing leaves your device. Pick a quality preset, watch the progress ring fill, and download. No uploads, no accounts, no tracking.

ffmpeg.wasm h.264 pwa offline
Compress a Video →
LEGENDARY
🔥
Infernal Drake
ATK 94 DEF 78
EPIC
Storm Herald
ATK 82 SPD 91
🍃 RARE
🐸
Forest Warden
ATK 65 DEF 88
🌊 COMMON
💧
Tidecaller
ATK 42 DEF 55
Live

Tome

Turn any photo into a collectible trading card. AI extracts subjects, assigns stats and rarity, then drops them into your collection. Battle friends, fuse variants, chase legendaries.

fastapi gpt vision card clash fusion
Summon a Card →
91 score
Vitamin C
ok
Citric Acid
ok
Yellow #5
!
BHA
!!
Niacin
ok
Live

Graze

Know what's in your products. Snap a label (food, cosmetics, supplements, baby care) and get an instant safety score with every ingredient color-coded and explained.

fastapi gpt vision 56 additives allergen profiles
Scan a Label →
hub
sell
tome
graze
compress
three
Live

Applesauce Hub

The index. Every Applesauce service in one place — live status, about pages, and quick links. Crawlable SSR so search engines see everything.

fastapi ssr service registry magic link auth
Browse Index →
less
more
Live

Open Source

136+ repos on GitHub. Computer vision, blockchain IoT, market simulations, and everything built along the way.

python rust pytorch github
Browse Repos →
About

Who's behind this

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.me
wil@arch:~$ whoami
PhD economist / AI researcher / builder

wil@arch:~$ ls ./skills/
python/ c++/ rust/ pytorch/ llms/ econometrics/

wil@arch:~$ cat research.txt
LLM behavioral alignment, AI risk-taking,
game theory, causal inference

wil@arch:~$ gh repo list --limit 1
136 repositories | open source

wil@arch:~$ systemctl status applesauce
active (shipping)
The Platform

What we've built

Sell

Live

The 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.

GPT-5.1 vision identification Real-time eBay sold comps Pirate Ship shipping estimates One-click eBay & FB posting Source Mode for thrift store scouting PriceCharting & CamelCamelCamel data Image deduplication (skip re-analysis) Shareable listing pages
Start Selling → Learn more

Game Lab

Live

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%.

6 classic behavioral economics games 270+ system prompt combinations 1,050 trials per model profile Cohen's d = 1.98 effect size Peer-reviewed human baselines Live interactive rounds 7-domain behavioral profiling Companion to working paper
Play a Game → About the research

Three Body

Live

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.

Real-time gravitational simulation Configurable mass & velocity Torus & plane boundary modes Eat & bounce collision physics Follow individual bodies Chaotic orbital dynamics
Launch Simulator →

Compress

Live

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.

Browser-native FFmpeg (WebAssembly) H.264/libx264 encoding High/Medium/Low quality presets Target file size mode Sample-based size estimation Real-time progress & ETA Offline PWA support Zero tracking, zero uploads
Compress a Video → Source code

Tome

Live

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.

Photo-to-card generation 8 elemental types 6 rarity tiers (Common to Mythic) Card Clash PvP battles Card fusion system AI-generated card art & lore Collection & deck building Global leaderboard
Summon a Card → Learn more

Graze

Live

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.

Photo-to-ingredient extraction 56 flagged food additives database 82 cosmetic ingredients of concern Personal allergen profiles Open Food Facts API integration Safety score /100 Scan history & ingredient cache 5 free scans per day
Scan a Label →

Applesauce Hub

Live

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.

Server-side rendered Service registry About page aggregator Crawler-friendly SSR Magic link auth Live status checks 18 services tracked 1-hour content cache
Browse Index →

Open Source

136+ repos

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.

Computer vision & image processing Blockchain IoT research Behavioral game theory Market simulation engines LLM alignment research Econometric modeling Causal inference tools PyTorch & ML pipelines
Browse on GitHub → Academic work

Let's build something.

Got an idea? Want to collaborate? We're always building.