Is McDonald’s Going to Hate Me? My Project Saved America $16.5 Million and 630,000 Hours in 10 Days

As the legendary, hardest-to-find Toy #6 began surfacing across stores, a massive wave of collection completions emerged on social media, and web traffic gradually tapered off after hitting an all-time high late Sunday night. Looking back over these 10 days, this map generated results that even I find hard to believe.

1. 10-day core data at a glance

• Total Users: 127,000
• Views: 678,000
• Event Count: 2,000,000 (map clicks, toy filters, real-time inventory reports, etc.)
• Community Reports: Over 40,000 real-time crowd-sourced inventory updates
• Average Session Duration: 5 minutes 04 seconds (exceptionally high engagement for a single-page lookup tool)
• Realtime Users: Over 2,400 concurrent users checking the map in the last 30 minutes during peak hours

2. Swapping engines mid-flight: 122 deployments in 10 days

A few days ago, I mentioned the close call where traffic burned through free-tier limits within 48 hours. To hold up against nationwide concurrent queries, I completely refactored the architecture:

• Store Cache Optimization: Cached coordinates and implemented dynamic viewport rendering across nearly 14,000 nationwide locations.
• Query Performance Leap: Rewrote the target toy filtering and rendering logic, dramatically reducing map response latency.

Without realizing it, I pushed 122 deployments across 10 days. The first three days were spent building 80% of the core product, while the rest was entirely dedicated to swapping out parts mid-flight just to ensure a seamless experience without lags.

3. The real cash-flow lesson from micro-donations

As traffic surged, I began receiving small micro-donations from passionate users. Most chose to tip $1, which turned into an accidental live benchmark of payment processing cut rates for micro-transactions:

• Venmo (Business Account): Performed best. Net payout was approximately $0.89 per $1.
• Ko-fi (via Stripe): Ko-fi itself takes 0%, but the underlying fixed processing fee from Stripe is significant for micro-transactions, yielding about $0.67 per $1.
• PayPal: The most staggering fees for micro-transactions; the fixed fee plus percentage cut took more than half, taking $0.52 per $1 and leaving just $0.48 in net payout.

Every time my phone chimed with a payment notification, watching the single dollars add up alongside heartfelt notes of gratitude brought an operational product joy that you can never experience looking strictly at engineering logs.

4. An informal impact estimate

Taking the messages of gratitude to run an informal yet highly vivid back-of-the-napkin estimate:

• Saved 630,000 Hours of Human Life: An empty trip to a store, back-and-forth including drive-thru lines, easily takes at least 30 minutes. If precise location tracking spared each person just 10 wasted trips, that saves 5 hours per person. Multiplied across 127,000 users, that equals a collective 635,000 hours saved nationwide—equivalent to over 72 years of human life.
• Guarded $3.16 Million in Gas Money: Estimating with the most popular vehicle in American households—the SUV—crawling through city streets and idling in drive-thru lanes, 5 hours of hunting consumes roughly 6 gallons of gas. At the current national average of $4.15 per gallon, this saved over $3.16 million in fuel costs (around 760,000 gallons of gasoline).
• Rescued $13.3 Million and Everyone’s Stomachs: There are 8 toys in this campaign's set, made more brutal by the fact that rare "final boss" items like #1 and #6 were nearly impossible to find across many locations. In probability theory, completing a full set blindly requires buying over 20 meals on average. Without the map, it was common for die-hard collectors and parents to buy 15 extra duplicate meals just trying to nail down #1 or #6. Factoring in local sales taxes with an average cost of roughly $7 per meal across the country, this map transformed blind-box gambling into targeted sniping, preventing $13.33 million in unnecessary spending and sparing people from having to force down over 1.9 million unwanted burgers and fries.

A quick tally shows that over just 10 days, this humble side project saved American toy collectors over $16.5 million and 72 years of time. Staring at these absurd yet unmistakably real numbers, every dark circle under my eyes from changing airplane engines mid-flight instantly felt worth it. (Is McDonald's going to hate me for this...?)

Written after 10 days

If there is a milestone worth remembering this year, it certainly isn't the corporate headwinds or organizational restructuring, but the fact that within this brief window, a few lines of code and a simple idea genuinely helped over 120,000 people across the country.

The money earned from donations may be modest, but the end-to-end founder experience of building something from scratch, withstanding viral traffic, solving a real pain point, and receiving genuine gratitude—priceless!