openSIS vs Rediker AdminPlus

openSIS9.3Visit Rediker AdminPlus8.4Visit

Higher score openSIS #1 in Student Information Systems 9.3/10 Free plan · 15-day trial Free planFree trial✓ 1 of 5 features Visit openSIS

vs

Rediker AdminPlus #8 in Student Information Systems 8.4/10 Pricing on request ✓ 1 of 5 features Visit Rediker

• openSIS fits best

  Budget-conscious schools needing broad SIS coverage

• Rediker AdminPlus fits best

  Schools wanting mature administration and interoperability

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Side by side

Feature	openSIS 9.3/10 Visit ↗	Rediker AdminPlus 8.4/10 Visit ↗
At a glance
Editor score	9.3	8.4
Ranking	#1 in Student Information Systems	#8 in Student Information Systems
Best for	Budget-conscious schools needing broad SIS coverage	Schools wanting mature administration and interoperability
Pricing model	Free plan + paid	Paid
Starting price	$4/user/mo	Pricing on request
Free plan	✓ (best)	Not checked yet
Free trial	15 days	—
Deployment	Cloud, Mobile	Cloud, Mobile
Platforms	Web, iOS, Android	Web, iOS, Android
Support	Email, Phone, Tickets, Docs	Email, Phone, Tickets, Docs
Compliance	ISO 27001, GDPR	SOC 2, PCI DSS, 2FA
Integrations	16 integrations	8 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features openSIS 1/5 · Rediker AdminPlus 1/5
Enrollment workflows	Not checked yet	Not checked yet
Transcript management	Not checked yet	Not checked yet
Student portal	Not checked yet	Not checked yet
API access	Not checked yet	Not checked yet
Attendance tracking	✓	✓
Specs
Hosting	Not checked yet	Not checked yet
Our review
Pros	Free plan plus a 15-day trial supports budget-conscious evaluation. Covers records, attendance, grading, portals, billing, and admissions. Connects with LMS, payment, accounting, communication, and SSO tools.	Covers records, attendance, scheduling, grades, billing, admissions, and behavior. Supports Google Classroom, Clever, Ed-Fi, OneRoster, SIF, and other education standards. Provides web, iOS, and Android access with parent and student portals.
Cons	Core Startup is limited to 50 students and 100 parent accounts. Advanced integrations, API access, and single sign-on require Advanced. Staff-based pricing can cost more on monthly billing than annual billing.	Pricing is handled through a contact-sales process. Its broad scope may exceed the needs of schools seeking one narrow workflow. It is proprietary rather than open source.
Our verdict	openSIS is a cloud-based student information system for K-12 schools, colleges, training programs, and virtual education providers. It brings together student records, admissions, scheduling, attendance, grading, billing, communications,… Read the review →	Rediker AdminPlus is a cloud-based student information system for PK–12 schools, districts, and dioceses. It brings student and staff information management, daily and period attendance, scheduling, course management, grade entry, report… Read the review →

Strengths and trade-offs

• openSIS — where it wins

  • Free plan plus a 15-day trial supports budget-conscious evaluation.
  • Covers records, attendance, grading, portals, billing, and admissions.
  • Connects with LMS, payment, accounting, communication, and SSO tools.

  Where it doesn't

  • Core Startup is limited to 50 students and 100 parent accounts.
  • Advanced integrations, API access, and single sign-on require Advanced.
  • Staff-based pricing can cost more on monthly billing than annual billing.

• Rediker AdminPlus — where it wins

  • Covers records, attendance, scheduling, grades, billing, admissions, and behavior.
  • Supports Google Classroom, Clever, Ed-Fi, OneRoster, SIF, and other education standards.
  • Provides web, iOS, and Android access with parent and student portals.

  Where it doesn't

  • Pricing is handled through a contact-sales process.
  • Its broad scope may exceed the needs of schools seeking one narrow workflow.
  • It is proprietary rather than open source.

• openSIS9.3/10 · Free plan · 15-day trial

  Broad SIS coverage with a free plan and staff-based pricing from $4 monthly.

  Visit openSISFull verdict →
• Rediker AdminPlus8.4/10 · Pricing on request

  A broad PK–12 SIS covering administration, academics, billing, admissions, and portals.

  Visit RedikerFull verdict →