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Head-to-head · Science Learning Software

CK-12 FlexBook 2.0 vs Inq-ITS

Updated Oct 2026
Both researched from official sources
5 checks side by side

Higher score CK-12 FlexBook 2.0 #2 in Science Learning Software 9.3/10 Free plan Free plan✓ 3 of 4 features Visit CK-12

Inq-ITS #3 in Science Learning Software 9.2/10 Free plan · pricing on request · 30-day trial Free planFree trial✓ 4 of 4 features Visit Inq-ITS

CK-12 FlexBook 2.0 leads on 0 checks, Inq-ITS on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

Highest scoreCK-12 FlexBook 2.0 · 9.3/10
Free planboth
Free trialonly Inq-ITS
Most featuresInq-ITS · 4 of 4

CK-12 FlexBook 2.0 scores higher on our rubric for science learning software: 9.3 against 9.2 out of 10; our editors rank them #2 and #3.

On science scope, CK-12 FlexBook 2.0 gives you K-12 science where Inq-ITS offers Multi-subject.

CK-12 FlexBook 2.0 is the better fit for schools wanting a fully free science platform. Inq-ITS is the better fit for teachers needing assessed virtual investigations.

CK-12 FlexBook 2.0 fits best
Schools wanting a fully free science platform
Inq-ITS fits best
Teachers needing assessed virtual investigations

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Side by side

Show only differences

Feature	CK-12 FlexBook 2.0 9.3/10 Visit ↗	Inq-ITS 9.2/10 Visit ↗
At a glance
Editor score	9.3	9.2
Ranking	#2 in Science Learning Software	#3 in Science Learning Software
Best for	Schools wanting a fully free science platform	Teachers needing assessed virtual investigations
Pricing model	Free	Free plan + paid
Starting price	Free plan	Free plan · pricing on request · 30-day trial
Free plan	✓	✓
Free trial	—	30 days
Deployment	Cloud	Cloud, Browser extension
Platforms	Web	Web, Windows, macOS, iOS, Android
Support	Email, Community, Docs	Email, Phone, Docs
Integrations	6 integrations	2 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features CK-12 FlexBook 2.0 3/4 · Inq-ITS 4/4
Interactive simulations	✓	✓
Virtual experiments	Not checked yet	✓ (best)
Guided lessons	✓	✓
Assessment tools	✓	✓
Specs
Science scope	K-12 science	Multi-subject
Included learners	Not checked yet	Not checked yet
Supported platforms	Browser on laptop, desktop, Chromebook, tablet, or mobile device	Web browser; Windows, Mac, Chromebook, iPad, and Android devices
Our review
Pros	Free customizable textbooks with videos, interactives, and practice Physics and chemistry simulations plus adaptive personalized questions Assignments, progress insights, and LMS grade passback support	NGSS-aligned labs span physical, life, and Earth science Auto-grading, reports, and alerts support ongoing assessment Rex AI tutoring plus Google Classroom and Clever integration
Cons	Browser-based access only Science content is focused on K–12 learning Customization and class management are teacher-led	Pricing requires a sales conversation rather than published amounts The experience is focused on school-based science investigations Advanced workflows may require teacher setup and monitoring
Our verdict	CK-12 FlexBook 2.0 is a browser-based science learning platform for K–12 students, teachers, parents, and schools. Its core offering combines customizable digital textbooks with interactive lessons, embedded videos, practice activities,… Read the review →	Inq-ITS is a browser-based science learning environment for middle and high school students. It supports NGSS-aligned virtual labs across physical, life, and Earth science, with interactive simulations that guide learners through… Read the review →

CK-12 FlexBook 2.0Science Learning Software 9.3Free plan
I Inq-ITSScience Learning Software 9.2Free plan · pricing on request · 30-day trial

Compare the top tools in

Strengths and trade-offs

CK-12 FlexBook 2.0 — where it wins
- Free customizable textbooks with videos, interactives, and practice
- Physics and chemistry simulations plus adaptive personalized questions
- Assignments, progress insights, and LMS grade passback support
Where it doesn't
- Browser-based access only
- Science content is focused on K–12 learning
- Customization and class management are teacher-led
Inq-ITS — where it wins
- NGSS-aligned labs span physical, life, and Earth science
- Auto-grading, reports, and alerts support ongoing assessment
- Rex AI tutoring plus Google Classroom and Clever integration
Where it doesn't
- Pricing requires a sales conversation rather than published amounts
- The experience is focused on school-based science investigations
- Advanced workflows may require teacher setup and monitoring

CK-12 FlexBook 2.09.3/10 · Free plan
A broad, free science platform for schools that want customizable content and classroom tools.
Visit CK-12 Full verdict →
Inq-ITS9.2/10 · Free plan · pricing on request · 30-day trial
A structured virtual lab platform for assessed, NGSS-aligned science investigations.
Visit Inq-ITS Full verdict →

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update