Best 5501 Apps

Plant trees with every searchFund climate actionSupport local communities

This search engine allows users to plant trees by browsing the internet. It uses ad revenue to fund reforestation projects, support communities, and combat climate change. Your data is kept private and searches are encrypted.

🔧 Utilities

(9.3K)

HVAC exam test prep & more

EPA 608 Practice 2026

Comprehensive question bankSimulated exam modePDF resource access

Prepare for HVAC certification exams with a comprehensive question bank, detailed answers, and simulated test environments. Access PDF resources, track your progress, and focus on weak areas with specialized study modes. This ad-free app offers intensive training and mistake analysis for effective exam readiness.

(442)

车来了-精准实时公交

实时公交地铁查询，出行路线智能规划

Real-time bus arrival and location trackingVoice alerts for boarding and alightingInnovative arrival analysis service

This app provides real-time public transit information for over 300 cities. It offers accurate bus arrival times, route planning, and helpful features like voice alerts for your stop, helping you avoid waiting and plan your commute efficiently.

🗺️ Navigation

(280)

The app of the GLOBE program.

GLOBE Observer

Make environmental observationsDocument cloudsMap mosquito habitats

Contribute to real scientific research by making environmental observations. Document clouds, mosquito habitats, land cover, and trees using your mobile device. Your data supports scientists worldwide, including NASA and NOAA.

(86)

Water Operator Certification

AWWA Opcert Exam Prep

2,800+ practice questionsDeveloped by industry professionalsDetailed answer explanations

Prepare for your water operator certification exam with a comprehensive study tool. Access thousands of practice questions, detailed explanations, and progress tracking. Master water treatment, distribution, and wastewater topics to advance your career.

(620)

Delilah

Democracy, Unlocked.

Real-time bill trackingAI-powered policy summariesCivic engagement tools

Understand the laws shaping your life with real-time bill tracking, AI-powered policy exploration, and civic engagement tools. See what lawmakers are deciding, how people are reacting, and where civic action is happening nationwide.

by TURNING POINT USA INC.

Student education and trainingPromote freedom and conservative principlesOrganize student groups

This app connects students with resources to promote freedom and conservative principles. It provides educational materials, training opportunities, and organizational tools for student engagement.

📡 News

(106)

ad-supported

Earth Hero: Climate Change

Climate Action, Carbon Tracker

Personalized climate actionsCarbon footprint trackerCommunity mobilization

Take practical steps to address climate change and discover sustainable living. This app connects you with a global community, offers personalized actions, and tracks your carbon footprint to help you reduce emissions and set green goals.

🌟 Lifestyle

(784)

Chemical Safety Data Sheets - ICSC

by ThatsMyStapler Inc.

Two-page chemical safety summariesSearchable chemical list (Name, CAS#, RTECS#)Saved history of viewed chemicals

Access concise, standardized safety summaries for chemicals, ideal for workers and employers. This app provides essential health and safety information in an easy-to-review, two-page format, serving as a valuable supplement or alternative to lengthy MSDS documents.

Watch CLE and earn credit

Access 2,000+ on-demand CLE coursesInstantly claim CLE credit and certificatesTrack CLE progress with Universal Credit Tracker

Earn and track Continuing Legal Education (CLE) credits conveniently with this app. Access over 2,000 on-demand courses, download content for offline viewing, and automatically save progress across devices. It's designed for legal professionals to manage their CLE compliance and professional development.

The Ultimate Digital Hall Pass

Create and schedule digital hall passesApprove or deny pass requestsReal-time student tracking with photos

This app allows educators and school staff to manage digital hall passes in real-time. It enables the creation, approval, and tracking of student passes, with features like Hall Monitor and Kiosk Mode for efficient school management.

(1.5K)

Chemistry. Periodic table. AI

Chemical reactions. Elements

Interactive Periodic Table with 3D modelsAI-powered chemistry tutor (ChemAI)Chemical reaction solver

Explore an interactive periodic table with 3D models and AR features. This app offers an AI-powered tutor for simplified explanations, a reaction solver, and a molar mass calculator. It's a comprehensive reference for students and professionals to learn chemistry effectively.

(2.7K)

lead4ward

by Ervin Knezek

Supports quality educationBuilds leadership capacityTransforms learning for students

This app supports educators and school districts in improving student learning and leadership capacity. It offers professional development and consulting services to help teachers and leaders adapt to evolving assessment systems and achieve student success.

Reduce your exposure to toxics

Research-based tips for reducing toxic exposureSafer alternatives for everyday productsDIY non-toxic recipes

This app provides research-based tips and guidance to help you reduce exposure to toxic chemicals in everyday products and routines. It offers advice on safer alternatives for home, food, clothing, personal care, and cleaning, empowering users to make healthier choices for themselves and their families.

This app provides a comprehensive platform for academic administration, covering grades, schedules, attendance, and student progress. It facilitates real-time data access for students, parents, and teachers, enhancing communication and oversight within educational institutions.

Grades and competences trackingScheduling and attendance managementHomework and exercise submission

Take action. Earn trees.

Send personalized messages to leadersEarn real trees for actionsLearn about climate issues

Amplify your voice for climate action by sending personalized messages to political and business leaders. Learn about climate issues and earn real trees for your efforts. Connect with a community of activists and contribute to collective change.

📊 Productivity

(167)

Discover new ways to go green

JouleBug: Legacy

Employee Engagement HubTailored Sustainability ProgramsMetrics for Impactful Insights

This app is designed to enhance workplace experiences by fostering environmental and social stewardship through collective action. It offers tailored sustainability programs, tracks impact metrics, and encourages employee engagement through challenges and social interactions.

🌟 Lifestyle

(41)