Free browser tools
Free online tools for quick, practical checks.
Run focused tools for writing, paper money, food labels, sound, sports cards, lost devices, and pest safety. Each page helps with the immediate task first, then points to the matching iPhone app when you need scanning, saved workflows, or a mobile-first experience.
Tool directory
Pick the workflow you need
Tools are grouped by intent so users and search engines can understand the site structure without landing on a generic list.
Writing and editing
Rewrite, correct, and measure text before publishing or sending.
Paraphrasing Tool
Rewrite text into clearer drafts
Open tool Paraphrase Tool: Fluxkey ProductivityGrammar Checker
Find grammar, spelling, and style issues
Open tool Paraphrase Tool: Fluxkey ProductivitySentence Corrector
Fix grammar and spelling in one sentence
Open tool Paraphrase Tool: Fluxkey ProductivitySentence Rewriter
Rewrite one sentence in several styles
Open tool Paraphrase Tool: Fluxkey ProductivityWord Counter
Count words & characters instantly
Open toolPaper money and collectibles
Screen banknotes and sports cards before scanning, grading, or selling.
Paper Money Value Guide
Choose the right old bill value checker
Open tool Rare Money: Bill Scanner Tools & UtilitiesSilver Certificate Value Checker
Screen blue-seal dollar bills for collector signals
Open tool Rare Money: Bill Scanner Tools & Utilities2 Dollar Bill Lookup & Value Checker
Check series, serial number, and star-note signals
Open tool Rare Money: Bill Scanner Tools & UtilitiesStar Note Checker
Check star notes and fancy serial patterns
Open tool Rare Money: Bill Scanner Tools & UtilitiesDollar Bill Serial Number Checker
Find rare 'fancy' serial numbers instantly
Open tool Grader: Sports Card Scanner Reference
Is My Sports Card Worth Grading?
Estimate if grading a card makes financial sense
Open tool Grader: Sports Card Scanner ReferenceSports Card Centering Calculator
Calculate sports card centering from borders
Open toolFood, allergens, and shopping
Check ingredient labels, gluten risk, rice questions, and grocery lists.
Gluten-Free Ingredient Checker
Scan or paste a label to flag gluten-risk terms
Open tool Allergy & Food Scanner: Ryla Health & SafetyIngredient Allergen Checker
Paste ingredients and flag common allergens
Open tool Allergy & Food Scanner: Ryla Health & SafetyDoes Rice Have Gluten?
Check rice, grains, and gluten-risk foods
Open tool Grocery List Maker Perfectly Productivity
Grocery List Maker
Build and organize a shopping list fast
Open toolSound and microphone tools
Change recorded voices, test microphones, compare decibels, and estimate noise exposure.
Online Voice Changer
Record, add voice effects, preview, and download
Open tool Mic to Speaker: Microphone Tools & UtilitiesRobot Voice Changer
Build six adjustable robot voices in your browser
Open tool Mic to Speaker: Microphone Tools & UtilitiesOnline Mic Test
Test your microphone in the browser
Open tool Measure Decibels Tools & Utilities
Online Decibel Meter
Measure sound level (dB) in your browser
Open tool Measure Decibels Tools & UtilitiesNoise Exposure Calculator
Estimate safe listening time from dB and duration
Open tool Measure Decibels Tools & UtilitiesDecibel Comparison Chart
Compare dB levels to everyday sounds
Open toolBluetooth and lost devices
Use browser checks and search plans for missing headphones and accessories.
Pest safety checks
Use conservative visible-clue screening before approaching pests.
