Apps Like ViperGas for iPhone and iPad
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Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.


PROmote - Army Study Guide
DeCesha, Inc.
Grade questions, track progress, customize plans
Practice tests with customizable questions across 48 subjects. Track performance with detailed score reports. Review answers and identify areas for improvement. Set goals and monitor progress over time. Sync data across devices.







i-Ready Connect for Students
Curriculum Associates, LLC
Access assessments and personalized instruction
Access -Ready Assessment and Personalized Instruction, -Ready Classroom Mathematics, and Learning Games. Complete assignments, track progress, and participate in adaptive learning activities.




Rule Master
Universal Queue LLC
Test knowledge with Rules of the Road
Learn and test knowledge of navigation rules with interactive quizzes and detailed explanations. Filter questions by category and difficulty. Track progress with performance analytics and proficiency reports.

Waterway Guide
Waterway Guide
Navigate with detailed marina and anchorage data
Navigate with detailed maps showing marinas, anchorages, bridges, and locks. View satellite imagery and receive navigation alerts. Add and share points of interest. Earn rewards and read verified reviews from other boaters.


Aviation Dictionary
Aviation Supplies and Academics, Inc.
Understand aviation's technical language.
The app defines over 12,000 aviation terms, acronyms, and phrases, including nearly 500 illustrations. It is based on the book Dictionary of Aeronautical Terms by Dale Crane and draws from FAA regulations and other aviation resources.

RAD Video
Royal Academy of Dance Enterprises Ltd
Royal Academy of Dance examination videos.
The app contains video content from the Royal Academy of Dance's Graded and Vocational Graded Examinations in Dance. These syllabi challenge students to meet the highest technical and artistic demands of current ballet training and performance.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.