43 worked specifications
What a build spec looks like, for your kind of product.
Each of these takes one real product and writes the part that decides whether it ships: the screens, the data model with actual field types, who is allowed to read which row, the states it moves through, and the two or three places it breaks once real people use it.
Free 1-minute fit check · no equity · no retainer
How these were written
Drafted by the same engine behind our free generator, against the engineering playbook every one of our builds runs on. The products are invented; the decisions are the ones we would make. Put your own idea through the generator and you get the same treatment in thirty seconds.
AI
AI triage for a customer support inbox
Incoming support emails must be accurately classified and drafted so that agents only need to review and approve instead of typing from scratch.
4 screens · 4 tables · 2 failure modes
An AI assistant that answers questions over company documents
Staff upload manuals and query them in plain language, receiving precise answers citing document sources and page numbers filtered by team permissions.
4 screens · 4 tables · 2 failure modes
An AI that turns meeting recordings into tracked actions
A meeting recording must reliably transform into actionable tasks that persist into the next meeting's agenda.
4 screens · 3 tables · 2 failure modes
Education
A cohort-based online course platform
An instructor runs a cohort-based course with time-shifted student schedules where automated lesson unlocks and assignment feedback drive completion.
5 screens · 5 tables · 2 failure modes
A marketplace for private tutors
The product succeeds if a parent can find, book, and securely pay for a tutoring session, with tutors reliably receiving payment after the session is confirmed complete.
6 screens · 4 tables · 3 failure modes
Lesson scheduling for a driving school
The system must ensure a student can book an available lesson slot with a specific instructor and that the booking is instantly confirmed across the school's schedule.
5 screens · 5 tables · 3 failure modes
Lessons and payments for a music school
Managing weekly music lesson scheduling and monthly advance billing while tracking student practice logs and enforcing cancellation credit windows.
5 screens · 4 tables · 2 failure modes
Fitness
Class passes and bookings for a yoga studio
The system's core function is enabling a student to reliably book a class spot using a pre-purchased pass.
4 screens · 4 tables · 3 failure modes
Memberships and door access for a gym
A member's successful monthly payment must automatically and immediately grant them QR code access to open the gym door.
4 screens · 3 tables · 3 failure modes
Food and drink
Pre-order and pickup for a food truck
The product's success depends on customers being able to pre-order and pay for food, and the truck seeing a simple, live queue of those orders.
5 screens · 4 tables · 2 failure modes
Supplier ordering for a restaurant group
Head office must be able to see accurate, aggregated food costs per restaurant from checked-in supplier deliveries.
5 screens · 5 tables · 3 failure modes
Healthcare
A participant diary for a clinical study
Study participants submit immutable daily symptom questionnaires on mobile devices while researchers monitor compliance and drop-off rates.
4 screens · 3 tables · 2 failure modes
Appointment booking for a dental clinic
For the product to launch, a patient must be able to book an available time slot for a specific treatment, and the clinic must see that booking appear instantly on the correct chair's schedule.
5 screens · 3 tables · 3 failure modes
Exercise plans for a physiotherapy clinic
A physiotherapist assigns exercise plans to patients who log their completion and pain levels on mobile so the physio sees adherence before appointments.
4 screens · 4 tables · 2 failure modes
Patient records for a veterinary practice
The system must provide a vet with a complete, instantly-accessible clinical history for any animal, and clearly flag overdue vaccinations.
5 screens · 5 tables · 3 failure modes
Session notes and billing for a therapy practice
Six therapists must independently manage recurring client time slots, write private session notes, and feed billing records to the practice owner without cross-therapist note leakage.
5 screens · 5 tables · 2 failure modes
Internal operations
An internal IT help desk
Employees must be able to raise an IT ticket and instantly see it reach the correct team queue without manual triage.
5 screens · 4 tables · 2 failure modes
Expense approvals for a 50-person company
An employee photographs a receipt, routes it through manager and threshold finance approvals, and tracks where the claim is stuck.
5 screens · 3 tables · 2 failure modes
Logistics
Proof of delivery for a courier company
Drivers complete assigned morning stop sequences sequentially with photographic proof while dispatch monitors live van progress and customers track links.
4 screens · 3 tables · 2 failure modes
Stock counts for a small warehouse
Staff can scan barcodes on mobile phones to count warehouse stock by location and flag supervisor-review discrepancies without halting operations.
4 screens · 4 tables · 2 failure modes
Professional services
Job workflow for a translation agency
A translation agency needs an immutable assignment pipeline that calculates freelancer pay and agency margin per job against hard delivery deadlines.
4 screens · 3 tables · 2 failure modes
Time tracking and invoicing for freelancers
The product succeeds if a freelancer can reliably turn a month of tracked, unbilled hours into a single, client-payable invoice with one click.
5 screens · 4 tables · 3 failure modes
Real estate
Desk and room booking for a coworking space
Members can book hot desks and meeting rooms against their monthly credit allowance, with automatic overage billing at month-end.
4 screens · 4 tables · 2 failure modes
Maintenance requests for a property manager
The entire lifecycle of a maintenance request, from a tenant's photo to a contractor's proof of completion, must be visible to all parties without anyone needing to place a phone call.
5 screens · 5 tables · 3 failure modes
Viewings and offers for an estate agency
The core loop of scheduling viewings, collecting agent feedback, and ordering offers must work without race conditions.
4 screens · 3 tables · 2 failure modes
Why these exist
Because the spec is the part everyone skips.
Nearly every project that misses its date missed it for the same reason: nobody wrote down who is allowed to read which row, what states the main object moves through, and what is deliberately not being built. These pages are that part, written out, for products that look like yours.
Next step
Find out if your idea fits in 10 working days.
Tell us what you want to build. We reply the same day with a straight yes, no, or here is what we would cut.