Sumdrop vs SizeItUp
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Sumdrop compared with SizeItUp
| Detail | 
Sumdrop | 
SizeItUp |
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| What it does | A free, ad-free number-pairing puzzle for iPhone and iPad
| A free daily size comparison game about your sense of scale
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | Not given
| US
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| Pricing model | Free
| Free
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| Pricing | Not given
| Not given
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| Key features | - Match numbers that are equal or sum to 10
- Daily Puzzle with streak tracking
- 3 free hints per stage
- Add numbers feature (5 per stage)
- Customizable settings including haptics and alerts
- Dark mode with high contrast options
| - Five daily games with unique themes and leaderboards
- Interactive resizing with visual feedback
- Sourced answers with links to primary sources
- Daily leaderboard ranking system
- Unlimited free play mode
- Archive to replay past puzzles
- Google account sign-in for streak tracking
- Scoring system based on accuracy ratio
- Cosmetic customization with titles and board themes
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| What makes it different | - No ads, ever
- Free to play completely
- Works offline anywhere
- Accessible design with VoiceOver support
| - Every size is sourced to primary references like NASA, ISO standards, and peer-reviewed studies
- Real size visual comparison without conversion to other units
- Fair scoring based on ratio rather than absolute difference
- Completely free with no pay-to-win mechanics
- Five diverse game categories spanning everyday, cosmic, prehistoric, culinary and microscopic scales
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 12 ▼ −2 (down) since last check | 13 ▲ +10 (up) since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 0 |
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| Referring domains (Majestic) | 0 | 0 |
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4 details filled in for both companies.
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