CrowdGrader vs Mobius SLIP
CrowdGrader
crowdgrader.comMobius SLIP
mobiusslip.comSide by side
| Figure | CrowdGrader | Mobius SLIP |
|---|---|---|
| Price from | $0.17/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 11 | 0 |
| Spec score · Peer Assessment Software | 9.0 (#1) | 7.0 (#12) |
| Integrations | Institutional subscriptions include optional integration with existing Learning Management Systems; the pricing page does not name specific systems. | The guide suggests using Dropbox or Google Drive public links for multiple files and YouTube or Vimeo links for videos; it does not identify formal integrations. |
| Purpose | CrowdGrader lets students submit and collaboratively peer-grade homework, while instructors monitor assignments and retain control of final grades. | Mobius SLIP is a web-based platform for social learning through complex assignments and peer assessment. |
| Support | The maker's homepage provides a contact email and phone number, and educator testimonials describe responsive help from the founder. | Students and instructors can contact the Support Desk at [email protected]. |
Plans
CrowdGrader
- FreeFree
- Free (instructor-sponsored)Free
- Student subscription$1.99 a year
- Student-supported assignment$1.99 a year
- Small$2.99, paid once
- Small (instructor-sponsored)$2.99, paid once
- Medium$6.99, paid once
- Medium (instructor-sponsored)$6.99, paid once
- Large$13.98, paid once
- Large (instructor-sponsored)$13.98, paid once
In their own words
CrowdGrader
CrowdGrader is a web service for students to submit homework and peer-grade classmates’ work while instructors oversee assignments and keep control of final grades. It combines peer assessments into a consensus grade for each submission and removes outliers. A student’s crowd-grade reflects both the grade received and how accurately that student grades other submissions. Students can create reports, math, or code in the built-in editor, or upload files such as ZIP archives. Reviews are anonymous: reviewers do not see authors’ identities, and uploaded files are renamed. Instructors can monitor similarities through clusters and side-by-side submission comparisons. Institutional subscriptions include optional LMS integration, access monitoring, and long-term data retention for auditing. Student work is transmitted over HTTPS; Google authentication uses only the user’s email address for identification. The free instructor-sponsored plan covers up to 20 students per assignment. Other listed options include $2.99 per assignment for up to 35 students, $6.99 for up to 100, and $13.98 for unlimited students.
Mobius SLIP
Mobius SLIP is a web-based social learning system for creating, reviewing, and critiquing assignments. Each assignment moves through Submission, Review, and Reaction: students submit work, assess peers' work, then respond to the reviews they receive. Students take both author and reviewer roles, and the process is anonymous unless the instructor directs otherwise. Analytics cover attainment, bias, controversy, and self-assessment accuracy for both roles. Suggested peer grades depend on review reliability, and instructors can override them. Instructors can monitor activity in real time, review work, provide feedback, and use course and assignment analytics to guide students. There is no stated cap on courses. Each student may upload one file of up to 10MB; videos must be hosted elsewhere and submitted as links. Students register with an instructor-provided code and a college or university email address. Instructors can upload a roster or allow self-enrollment, and students confirm registration by paying a registration fee. The product is paid, with pricing available on request, and instructor demos can be requested.