Practically PDF's answer

React and Vite on the frontend, Node.js and Express on the backend, OpenAI's API for the extraction and chat features, Supabase for the database, and Vercel for hosting.

Klartab's answer:

Klartab is built on Google Cloud infrastructure:

• Cloud Run — for serverless container hosting
• Cloud SQL — for the relational database (PostgreSQL), hosted in europe-west1 (Belgium)
• Firebase Authentication — for user auth
• Stripe — for billing and payments (with Stripe Tax for EU VAT handling)

The web app is fully responsive and works well on mobile browsers. Native iOS and Android apps are on the roadmap.

Practically PDF's answer

Practically just launched, so there aren't big-name customers to point to yet. Early users are mostly individual readers and professionals, people working through business and self-help books who want to get more out of what they read.

Klartab's answer:

Klartab is an early-stage product and does not publicly list named customers. The typical customers are:

• Independent freelancers billing multiple clients across different currencies
• Retainer-heavy contractors managing fixed-hour engagements
• Boutique staffing and placement agencies (typically 5–30 contractors) that need a structured approval workflow for timesheet submissions

Practically PDF's answer

Most AI book tools give you summaries or a condensed version of what a book is about. Practically focuses specifically on extracting actionable advice: the concrete, specific things you can actually do. There's also a Knowledge Base feature that lets you upload multiple books and chat across all of them at once, which is useful when you're trying to learn a topic from several sources rather than one book at a time.

Klartab's answer:

Klartab is built around a single philosophy: do the obvious thing well, then stop. Unlike bloated all-in-one tools, Klartab offers two deliberately focused products — Klartab Time for freelancers and Klartab Agency for staffing agencies — each solving one problem without scope creep.

• No live timer, no activity tracking — Klartab Time records totals over an interval, keeping things simple and respectful of your privacy.
• EU-hosted and GDPR-ready — all data lives in europe-west1 (Belgium); no behavioural advertising, and your data stays yours.
• Tight integration between the two tools — freelancers placed through a Klartab Agency get Klartab Time at no extra cost, with a clean submission and approval workflow.
• One flat price per tool, no tiers, no upsells — €10/month for Klartab Time; €100/month + €5/active seat for Klartab Agency.

Practically PDF's answer

If you want a summary, there are better tools for that. Practically is for people who've already read a book (or don't have time to) and want to know what to do differently. The output isn't "this book argues that habits are important", it's a list of specific techniques, frameworks, and steps pulled directly from the text. The Notion export also means the advice actually lands somewhere in your workflow rather than getting forgotten in another app.

Klartab's answer:

Choose Klartab if you want tools that respect your time and your data, without the noise.

• Radical simplicity — most time-trackers try to do everything: live timers, activity screenshots, integrations, AI insights. Klartab Time does one thing: log hours per project, export a clean report, get paid. No hidden complexity.
• Privacy-first — EU-hosted (Belgium), GDPR-ready, no behavioural advertising. Your data is never monetised.
• Fair, transparent pricing — one flat price with no tiers or per-feature upsells. Freelancers placed through a Klartab Agency agency get Klartab Time included at no extra cost.
• Purpose-built agency workflow — Klartab Agency replaces the spreadsheet-and-email approval loop with a proper submissions inbox, comment threads, approve/reject workflow, and period locking. Competitors either ignore agencies or bundle too much.
• No lock-in — month-to-month, cancel any time, data stays accessible read-only for 60 days after cancellation.

Practically PDF's answer

People who read nonfiction regularly but feel like they're not getting much out of it. That's a pretty wide group: professionals, students, anyone working through a reading list, but what they have in common is that they're trying to actually apply what they read, not just finish books.

Klartab's answer:

Klartab serves two distinct audiences that often work together:

Freelancers (Klartab Time) Independent contractors who bill multiple clients at different rates and currencies. Specifically: - Mixed-client freelancers who need clean per-project PDF reports at month-end without manual spreadsheet work. - Retainer-heavy contractors on fixed-hour engagements who need cap tracking to avoid over-billing. - Freelancers placed through staffing agencies who need a simple way to submit timesheets for approval.

Staffing & Placement Agencies (Klartab Agency) Boutique agencies (typically 5–30 contractors) that place freelancers with end clients and need to manage the time-approval workflow centrally. This includes working agency owners who both manage their team’s submissions and log their own hours as a placed freelancer.

Practically PDF's answer

I was reading a lot of nonfiction and noticing that very little of it was changing how I actually behaved. The books were good, but the advice was buried and spread across hundreds of pages of stories and research. I started manually extracting the practical parts into notes, which worked, but it was slow. So I built a tool to do it automatically. What started as a personal workflow became Practically.

Klartab's answer:

Klartab was built out of a frustration with tools that do too much. The founding philosophy is simple: identify the one obvious thing a tool should do, do it well, and stop there.

Klartab Time started as a timesheet tool for freelancers who were tired of live timers, activity tracking, and surveillance-style software. The goal was a clean, manual log — hours per project, your rate, a PDF for the client — without any of the noise.

Klartab Agency followed as the natural companion for the agencies that place those freelancers. Instead of chasing submissions over email and reconciling spreadsheets, agencies get a purpose-built inbox with approve/reject workflows, comment threads, and period locking.

Both products share the same values: EU-hosted, GDPR-ready, no behavioural advertising, transparent flat pricing, and a deliberate refusal to expand scope beyond what’s needed. The Klartab suite is built for people who want software that gets out of the way.