HHA Practice Test and Questions
Study home health aide questions with instant practice and review.
Free Online Apps and Tools
Browse calculators, converters, games, study tools, document tools, and printable generators from OIAPPSTUDIO.
PDF To JPG
Convert PDF pages into JPG images for sharing or saving.
Free Spell Check
Check spelling quickly before sending, posting, or publishing text.
Ebay Feedback Calculator
Estimate eBay feedback ratings from positive, neutral, and negative totals.
eBay Profit Calculator
Estimate eBay profit after final value fees, promoted listing fees, shipping, and seller costs.
Amazon Review Rating Calculator
Calculate average review ratings from star counts.
Offerup Fee Calculator
Estimate OfferUp selling fees and expected net earnings.
Mercari Fee Calculator
Calculate Mercari fees and profit from a sale price.
Fiverr Fee Calculator
Estimate Fiverr fees and what you keep after platform charges.
Fiverr Profit Calculator
Estimate Fiverr profit after platform fees, business costs, withdrawal cost, and tax reserve.
Mortgage Calculator
Estimate monthly mortgage payments from loan, rate, and term.
World Clock
View current times across major cities around the world.
Text To Speech
Read typed text aloud with browser voices, speed, pitch, and volume controls.
Hangman Game
Play Hangman with selectable categories like animals, music, and places.
Connect 4 Game
Play Connect 4 in one-player or two-player mode.
Quarter Mile Time Visualizer
Compare two 1/4 mile times with an animated drag race and finish gap estimate.
0-60 Time Visualizer
Compare two 0-60 mph times with an animated acceleration race and distance gap estimate.
Human Height Chart Visualizer
Compare human heights side by side with a ruler, silhouettes, feet, inches, and centimeters.
Math Worksheet Generator
Generate printable math worksheets with random problems and answers.
Online DOCX Editor
Edit simple DOCX-style documents online in your browser.
Fuel Cost Calculator
Estimate trip fuel cost from distance, MPG, and gas price.
Pie Chart Maker
Create a pie chart from labels and values.
Rain Noise
Play relaxing rain noise for sleep, focus, or study.
Ocean Sounds
Listen to calming sea shore sounds for relaxation.
Word Search Puzzle Maker
Create printable word search puzzle PDFs from your own words.
Etsy Fee Calculator
Estimate Etsy listing, transaction, and payment fees.
Etsy Profit Calculator
Estimate Etsy profit after seller fees, product costs, shipping, packaging, and ads.
Etsy Feedback Calculator
Estimate an Etsy shop feedback percentage from positive, neutral, and negative reviews.
Color Code Finder
Pick colors and find HEX or RGB color codes.
Tradesy Fee Calculator
Estimate legacy Tradesy selling fees and net earnings.
LVN Practice Test
Practice LVN nursing questions and track your score.
CPA Practice Test
Review accounting, audit, tax, and business concepts.
Real Estate License Practice Test
Study national real estate license topics with score tracking.
Six Sigma Green Belt Practice Test
Practice DMAIC, Lean, quality, and process improvement topics.
CSCP Practice Test
Review supply chain planning, sourcing, logistics, and inventory topics.
CNA Practice Test
Practice certified nursing assistant questions and explanations.
NBCRNA Practice Test
Review nurse anesthesia practice questions and study topics.
Walmart Fee Calculator
Estimate Walmart Marketplace referral fees by product category.