Professor Index vs CramMap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Professor Index
This app allows college students to rate and review professors and courses, providing insights into teaching effectiveness and course relevance. Students can compare professor profiles and make informed enrollment decisions based on peer feedback.
- Rate and review professors
- Get feedback on future professors
- Compare professor profiles
- Make data-informed enrollment decisions
- Gamified review incentives
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Professor Index (PI) is a user-friendly mobile app that enables college students to voice their opinions on various aspects of their higher educational experience, ranging from the effectiveness of their professors’ teaching methodologies to the relevance of their course materials. Students can rate and review their professors, request and get feedback about their future professors and courses at a glance, compare different professor profiles, and ultimately, make data-informed class enrollment decisions. To enhance engagement and response rates, PI uses gamification and nudging algorithms to incentivize students to actively review their professors by rewarding meaningful, objective, and fair reviews.
CramMap
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CramMap shows you how busy study spots are — in real time. See live crowd levels at libraries, study halls, and campus buildings. No account needed — just open the app at your study spot, and CramMap will automatically detect your location and check you in. Other students can see the crowd level update in real time, so everyone knows which spots have space. Simply open the app when you arrive at a study location — that's it. CramMap handles the rest. Available at Western University, University of Waterloo, McMaster University, and Wilfrid Laurier University — with 44+ study locations across all four campuses. Features: • Live crowd levels updated in real time • Open the app at a study spot to auto check-in • Favorite your go-to locations for quick access • Switch between 4 Ontario universities • Completely anonymous — no sign-up required • Beautiful dark mode interface Stop wasting time walking to a packed library. Open CramMap and find your spot.
Screenshots
Verdict
The clearest difference is update cadence: CramMap at every 4 days against Professor Index's monthly. Professor Index's advantage is iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Professor Index ships an update monthly, CramMap every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Professor Index | CramMap |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (59 ratings) — better | — |
| Positive reviews | 88.0% of reviews | — |
| Number of ratings | 59 — better | — |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 57 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Professor Index, LLC | Shouryajeet Walia |
In-app purchases
Professor Index
No in-app purchases
CramMap
No in-app purchases
Questions
Is Professor Index free?
Is CramMap free?
Do Professor Index or CramMap have ads?
Which is updated more often, Professor Index or CramMap?
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