After simplifying PeşinTaksit’s infrastructure, I reworked the experience

Moving PeşinTaksit to Cloudflare Workers reduced the work needed to keep it running. It did not make the payment comparison form any easier to use.

That was the next job.

PeşinTaksit is a free tool for comparing payment options: paying upfront, using installments, or paying later. The comparison can account for inflation or an alternative return assumption. It helps you examine the numbers; it does not decide what you can afford.

The comparison needed more context

We went back through the inputs and reconsidered what people would know when they arrived: the total price, an installment amount, a discount, or a payment schedule. The form needed to accommodate those starting points without making everyone work through every possibility.

A single highlighted number cannot explain a payment comparison.

The result needs to show which options were compared, the measure used, and the assumption behind it. Comparing against inflation answers a different question from comparing against an alternative return.

That context now has a clearer place in the experience, alongside ways to inspect the calculation and change the inputs.

Some simplification happened in the code too

The redesigned interface had little remaining use for Nuxt UI. We removed it and Reka UI, retained the light and dark themes, and moved date selection to the browser’s native picker while keeping day/month/year text entry.

In the production-build comparison, combined generated CSS fell from roughly 199 KB to 55 KB, and JavaScript from 557 KB to 287 KB, before compression. Those are build-output totals, not measured page-load improvements.

We also rewrote the blog content, replaced its illustrations, and updated the supporting pages to match the product’s current identity.

The useful lesson from this round was how often a plausible design needed another pass once I actually used it. AI helped implement the changes. Deciding whether those changes made the product easier still required that closer look.