Case studies
Real projects. Measurable results.
A selection of PieStack projects across data and AI, web and mobile products, and brand growth, with the results each one delivered.
- published case studies
- 5
- industries represented
- 5
- capability areas: data & AI, web & mobile, brand
- 3
Teams we've worked with
Featured · AI platform
Check2Learn
Learning platform for teachers and students
An AI-powered learning platform where every submission, typed, uploaded, or handwritten, is evaluated the moment it arrives, with performance history teachers can act on. Built end to end by PieStack.
- feedback the moment a student submits
- Instant
- answer formats: typed, document, and handwritten
- 3
- manual grading for essays and free-text answers
- Zero
- evaluation pipeline built on LangChain and LangGraph
- Agentic
All case studies
Explore our work.
Filter by capability to see how we've helped teams build products, grow brands, and put data and AI to work.
- Data & AI
- Web & Mobile
EdTech & Education
Check2Learn
AI-Powered Learning Platform for Every Mind
- Feedback turnaround
- Instant — AI evaluates the moment a student submits
- Answer formats supported
- Typed, document upload, and handwritten photo
- Web & Mobile
- Brand & Growth
Commerce & Retail
Haison Skin
Premium K-Beauty For Real Skin Results
- Increase in engagement
- 4.2×
- Increase in influencer content output
- 3×
- Web & Mobile
Sports & Gaming
SportsBall
Fantasy Baseball Lottery Platform
- Delivery Timeline
- 3 Months
- Speed Increase in Scoring Updates
- 87%
- Web & Mobile
- Brand & Growth
Commerce & Retail · Furniture
Minimal Space
Where Minimalist Form Meets Heirloom Quality
- Increase in Shopify revenue
- 220%
- Instagram follower growth
- 11k+
- Brand & Growth
Fashion & Apparel · Commerce & Retail
JootiShooti
Handmade Footwear | Designed & Crafted Locally
- Increase in online sales
- 120%
- Instagram follower growth
- 180k+
Client voices
What our clients say.
We enlisted this team for web and application development, and they delivered high-quality work on time, using technologies like Vue.js, Nuxt.js and Django REST Framework. Their communication was outstanding, making them invaluable to our projects. Looking forward to future collaborations.
Patrick BuessAssociate Director of Technology at SGEPTGreat work with a fairly ambiguous AI development task. Knowledgeable of LLMs, APIs, and backend engineering.
Amanda FieldsAI Strategy @ Google | Co-founder at Joe’yThe team has been fantastic to work with, providing great insights and feedback on tasks. Their dedication and commitment have been refreshing. I'm looking forward to continuing our collaboration. Thanks to the team for their hard work and commitment.
Matt SaricicekFounder, Owner @ BiyoPOSI was impressed with the team's work on this project. They kept me updated on progress and responded promptly to any questions. They were respectful of our agreed-upon schedule, delivering everything on time. The final product perfectly reflects the Figma wireframes, demonstrating a keen eye for detail and a strong ability to translate design into functional code.
Raymond OungGoogle Scholar
From Data to Measurable Value