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EmojiSpark vs ReactionTests

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

EmojiSpark compared with ReactionTests
DetailEmojiSpark logo EmojiSparkReactionTests logo ReactionTests
What it doesA little spark for every feeling Test your visual reaction time for free
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free
PricingNot given Not given
Key features
  • Browse 9 categories with 4,014 emojis and variants
  • Combo Studio to mix and create emoji combinations
  • 2,147 kaomoji with search and copy functionality
  • Heart Sticker Maker for creating custom stickers
  • Heart Text Art generator
  • Moon Phase Emoji finder
  • Save favorites to browser local storage
  • Community submission and moderation system
  • 4,447 text symbols including arrows and geometric shapes
  • Search with CLDR 48.2.2 annotations and keywords
  • Five-round visual reaction test with millisecond timing
  • Seven-round sound reaction time test
  • Local result history with up to 300 sessions stored
  • Consistency measurement showing standard deviation of scores
  • Download score card as image
  • Sound calibration for personal offset adjustment
  • Reference data from published research studies
What makes it different
  • Human-reviewed original combinations and collections created for EmojiSpark
  • No account needed; favorites and searches stored locally in browser
  • Unicode Emoji 18.0 with all skin tones and variants preserved
  • Local combo studio with themed palettes, not AI-connected
  • Privacy-focused with no analytics IDs or clipboard tracking
  • No account or login required to use the test
  • Results stored locally in browser for privacy
  • Compare full sessions to understand consistency, not just fastest round
  • Research-backed reference data from laboratory studies
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)31 −1 (down) since last check3 no change since last check
Trust Flow (Majestic)70
Citation Flow (Majestic)3011
Referring domains (Majestic)871

4 details filled in for both companies.

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