Everything in the store that is an app or a spreadsheet tool, in one purchase: 109 of them, from budgets, invoices and workout logs to AI prompt builders and hobby calculators (brewing, pottery glazes, archery, aquariums, woodworking and more).

• 3D Print Quote Calculator ($5+): Drop the G-code and it reads the grams and hours from the slicer header (PrusaSlicer, Orca, Bambu, Cura, Simplify3D)
• Baseline Ledger ($9+): Tally every ball of a hitting session from the keyboard, click the service box where each serve landed, count rallies with the space bar, and log matches on a broadcast-style score
• Blueprint ($9): Turn an app idea into the spec that keeps Lovable, Bolt, Cursor or Claude Code on track
• Cellar Chemist ($7+): Every addition a home winemaker makes, worked out properly
• Crumb ($8+): Every cottage baker asks the same question: what do I charge? Crumb answers it from your own receipts
• Etsy Pricing Engine ($4+): Price, shipping, materials, your time and every Etsy fee in
• Fairway Ledger ($9+): A golf journal in black lacquer and gold
• Flip ($8+): Built for people who flip on eBay, Poshmark, Mercari, Depop, Facebook Marketplace and Whatnot
• Glaze Chemist ($8+): Type a glaze recipe and see its unity molecular formula (Seger), Si:Al ratio, boron, thermal expansion and where it sits on a Stull chart, checked against cone 04, 6 and 10 guide r
• Handoff ($8): Give an AI agent a brief it cannot misread: the goal, the forbidden list, and when to stop and ask
• Hangar ($7+): Draw the wing from span, chords and sweep and get the mean chord, neutral point and a CG with your static margin, plus wing loading, cube loading and stall speed
• House Flip Deal Analyzer ($4+): Purchase, rehab, financing, monthly holding costs and the resale value in
• Is Your Landing Page Cooked? 26-Point Roast Scorecard ($5): Score your landing page against 26 common mistakes in about ten minutes, with the fix for each
• Keyword ($8): See which job post keywords your resume is missing, and get AI prompts that tailor it without inventing anything
• Lease ($9+): A rent ledger for landlords with one to ten units who do not want a $12-a-month platform
• Plainspoken ($7): Make AI-drafted writing read like you wrote it
• Poker Tournament Director ($8+): Type players, stack and how long you want to play
• Promptbook ($6): Keep your best prompts as fill-in-the-blank templates and copy them anywhere in one click
• Quiver ($8+): Build the arrow component by component and see weight, FOC, balance point, kinetic energy and momentum against game guidelines, with a spine starting point
• Reno ($8+): A kitchen, bath or whole-house renovation has three numbers per line: what you estimated, what you signed for, and what you have actually paid
• Ring & Stave ($8+): Type the segments, diameter and width and get the miter angle, segment lengths and board to buy, drawn to scale
• Skillsmith ($7): Build a valid Claude skill (SKILL.md plus an upload-ready zip) by answering six plain-English questions

No account and no subscription. The apps are single files that run in your browser on Windows or Mac, offline; the spreadsheet tools open in Google Sheets or Excel. Your data stays on your computer.

Who it's for: Anyone who wants the whole catalog, and anyone who would rather pay once than pick.

Questions? Reply to your receipt email.

Who made this

Matt Busel, AI Engineer @ Tensorust. I built 21 iOS apps from a Windows PC, a Steam game, and an AI agent team that runs my outreach in public, failures included.

X · LinkedIn · GitHub

8 iOS apps live on the App Store (21 uploaded from Windows)

524K views on X posts

5.4K LinkedIn followers

321+ newsletter subscribers

517 GitHub stars

Live things I built:

• O'BLOCK on Steam (out Oct 20)
• Chain: Habit Tracker
• Ironbook: Workout Log
• Live receipts: what the agents did today
• Code on GitHub

What is in it (109)

• 3D Print Quote Calculator ($5 alone)
• A/B Test Significance Calculator ($7 alone)
• API Key & Secret Rotation Tracker ($5 alone)
• App Store Review & Rejection Tracker ($5 alone)
• Baseline Ledger ($9 alone)
• Bike Gear Calculator ($5 alone)
• Billable ($8 alone)
• Binder ($8 alone)
• Black-Scholes Options Calculator ($7 alone)
• Blueprint ($9 alone)
• Bounty & Grant Deadline Tracker ($5 alone)
• Brine Lab ($6 alone)
• Cellar Chemist ($7 alone)
• Chain ($6 alone)
• Chores ($6 alone)
• Classroom ($6 alone)
• Clockout ($6 alone)
• Cocktail Batching Calculator ($5 alone)
• Cold Outreach Follow-up Tracker ($7 alone)
• Crumb ($8 alone)
• Curve ($6 alone)
• D&D 5e Encounter Balancer ($5 alone)
• Darkroom ($6 alone)
• Depth of Field & Focus Stacking Calculator ($5 alone)
• Domain, SSL & License Renewal Tracker ($5 alone)
• Duplicate Company Finder ($7 alone)
• Envelope ($9 alone)
• Espresso Dial-In Assistant ($5 alone)
• Etsy Pricing Engine ($4 alone)
• Fairway Ledger ($9 alone)
• Fert Lab ($6 alone)
• Flip ($8 alone)
• Freelance Rate Calculator ($5 alone)
• Freelancer Invoice & Late Payment Tracker ($5 alone)
• Garden Planting Calendar ($5 alone)
• Glaze Chemist ($8 alone)
• Golden Hour Shoot Planner ($5 alone)
• Golf Handicap Calculator ($5 alone)
• Guitar String Tension Calculator ($5 alone)
• Handoff ($8 alone)
• Hangar ($7 alone)
• Homebrew Recipe Calculator ($5 alone)
• House Flip Deal Analyzer ($4 alone)
• Hydroponic Nutrient Calculator ($5 alone)
• Ironbook ($7 alone)
• Is Your Landing Page Cooked? 26-Point Roast Scorecard ($5 alone)
• Itinerary ($7 alone)
• Keyword ($8 alone)
• League Round-Robin Scheduler ($5 alone)
• Lease ($9 alone)
• LLM API Cost Calculator ($7 alone)
• Lye & Leaf Soap Calculator ($7 alone)
• Meadery ($6 alone)
• Minder for Desktop ($6 alone)
• Nudge ($8 alone)
• Odometer ($7 alone)
• Offer ($7 alone)
• Onboard ($6 alone)
• Overlap ($5 alone)
• Paid ($8 alone)
• Pawprint ($6 alone)
• Plainspoken ($7 alone)
• PLATFORM ($7 alone)
• Poker Tournament Director ($8 alone)
• Pool Chemistry Calculator ($5 alone)
• Position Size & Kelly Calculator ($5 alone)
• Pour Plan ($6 alone)
• Powerlifting Meet Planner ($5 alone)
• Pricebook ($6 alone)
• Promptbook ($6 alone)
• Quilt Yardage Calculator ($5 alone)
• Quiver ($8 alone)
• Race Fuel ($7 alone)
• Race Pace & Split Planner ($5 alone)
• Ranked Session Tracker for League of Legends ($3 alone)
• Raw Bowl ($5 alone)
• Receipts ($6 alone)
• Reef Tank Dosing Calculator ($5 alone)
• Register ($8 alone)
• Reno ($8 alone)
• Ring & Stave ($8 alone)
• Rooms ($7 alone)
• Sheetful ($7 alone)
• Shotlist ($8 alone)
• Should I Deploy This? 18-Point Deploy Risk Checklist ($5 alone)
• Shrink ($7 alone)
• Side Project Keep-or-Kill Tracker ($5 alone)
• Skillsmith ($7 alone)
• Sourdough Formula Scaler ($5 alone)
• Sous Vide Time & Pasteurization Calculator ($5 alone)
• Stair & Stringer Calculator ($5 alone)
• Stamp ($6 alone)
• Startup Runway Calculator ($5 alone)
• Stitch Math ($6 alone)
• Subscription & Free Trial Tracker ($5 alone)
• Syllabus ($7 alone)
• Tab ($6 alone)
• Telescope Eyepiece & Camera Calculator ($5 alone)
• Tile Layout Planner ($5 alone)
• Tournament Bracket Generator ($5 alone)
• Turf Plan ($6 alone)
• Van Solar & Battery Sizer ($5 alone)
• Warranty & Return Deadline Tracker ($7 alone)
• Wedding Seating Chart Solver ($5 alone)
• Weeknight ($7 alone)
• Wick & Wax ($6 alone)
• Woodworking Cut List Optimizer ($5 alone)
• Youth Soccer Substitution Planner ($5 alone)
• Zero ($7 alone)