v2.0.0 β€” Now with Trend Graph & Smart Calendar

DETAINED?

The ultimate vibe check for your PSIT attendance.

Free forever β€’ Open Source β€’ 100% Privacy

Detained Extension Mockup
100% Local β€” no servers
0ms Network requests
PSIT ERP Compatible
v2.0 Latest version

Everything You Need. Nothing You Don't.

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Real-Time Stats

Live attendance % with OA adjustments, status badge (SAFE / CLOSE / BELOW GOAL), and per-lecture delta chips β€” right inside the ERP page.

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Bunk Buddy

Tells you exactly how many days and lectures you can skip against your personal goal. Updates in real-time as you change the goal %.

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Scenario Simulator

Enter planned days/lectures to skip and instantly see your projected attendance. Know before you go.

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Academic Planner

Set your last academic day. Get projected end-of-semester %, leave headroom, class days remaining β€” with full Mon–Sat schedule support.

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Attendance Trend Graph

Visual history of every day's attendance + a predicted projection line. Hover any point to see exact date and percentage.

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Smart Date Picker

Dual-month inline calendar for setting custom lecture ranges. Past dates disabled. Today highlighted. Select start β†’ end in two clicks.

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Holidays & Saturdays

Mark open Saturdays and custom holidays. The planner and graph automatically adjust projections around your real schedule.

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Streak & Smart Alerts

Attendance streak badge, toast alerts when you're dangerously close to your goal, and πŸ’€ warning when 100% is mathematically impossible.

How It Works

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Reads the Page

Parses your ERP attendance table directly in the browser. No API, no login, no permissions beyond the page you're already on.

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Calculates Live

Computes attendance %, leave allowance, recovery lectures, and day-by-day projections using your real schedule and custom settings.

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Shows You the Truth

Injects a clean floating bar and graph below the table. Updates in real-time as you change goals or simulate absences.

Get Started in 30 Seconds

1

Download

Grab the latest ZIP from the GitHub Releases page and extract it.

2

Dev Mode

Go to chrome://extensions and turn on Developer Mode in the top right.

3

Load Unpacked

Click Load unpacked and select the extracted folder. That's it.

4

Open ERP

Go to your Attendance page and watch the magic. ✨

πŸ”’ Trust & Privacy

Your data never leaves your browser. Ever.

βœ… No Data Collection
βœ… 100% Local Storage
βœ… Zero Network Requests
βœ… Fully Open Source
βœ… No Login Required
βœ… MIT Licensed