Pennywise icon

Pennywise

by Shivam Ajmera · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 19 Oct 2026

Class Cost Calculator

Users
5
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#256K
#214K among extensions
Version
1.1.0
updated 30 Dec 2023

Users

monthly, 3 years
0510Dec 2023Jun 2025Oct 2026
Latest, 19 Oct 2026: 5 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
001Dec 2023Jun 2025Oct 2026
Latest, 19 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Pennywise

This extension parses your calendar and breaks down your tuition fees into daily/monthly amounts based on today's classes. By understanding what each day at school is costing you, you're more likely to make the most out of your classes. It's a simple yet effective way to stay motivated and focused on your educational investment. Whether you're budgeting or just curious, this extension provides a clear, day-by-day breakdown of your tuition, making the abstract cost of education tangible and manageable. All data is securely stored on your local chrome browser - the extension works offline, try it! Share your receipts with friends to show how much today cost you :)

Growth

WindowUsersChangeRatingsRating
7 days+1+25.0%00.00
30 days0+0.0%00.00
6 months+2+66.7%00.00
1 year+2+66.7%00.00

Version history

2 versions recorded
1.1.030 Dec 2023
1.0.027 Dec 2023

Details

Category
Tools
First seen
27 Dec 2023
Size
158 KB
Languages
en
Pricing
Free
Extension ID
ipgddnpfogbeagiipkgeaeoaegncgbea

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
storagetabs
Site access
https://portalapi2.uwaterloo.ca/v2/calendar/*https://calendar.google.com/calendar/ical/*https://outlook.live.com/*

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