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💡 TipWise

Simple tips calculator with smart psychology

Enter the pre-tax amount of your bill

Your Smart Tip Options

Select to copy the amount you prefer

FAIR
$10 (15%)
Solid appreciation - Shows respect for good service
THOUGHTFUL
$12 (18%)
Lucky number 7 ending - Shows appreciation with positive energy
GENEROUS
$15 (23%)
Perfect round number - Feels complete and intentional
EXCEPTIONAL
$18 (27%)
Prosperity number 8 - Brings good fortune to your server

Free tip calculator using psychological patterns including lucky numbers, angel numbers, and Fibonacci sequences for optimal tipping decisions.

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Psychology Rules

Premium Patterns

High-priority mathematical and spiritual patterns

Angel Numbers
Repeating digits like 11, 22, 33, 44, 55, 77, 88
+20 priority points
Fibonacci Sequence
Natural harmony numbers: 2, 3, 5, 8, 13, 21, 34, 55
+20 priority points
Prime Numbers
Mathematically pure: 2, 3, 5, 7, 11, 13, 17, 19, 23
+20 priority points

Cultural Lucky Numbers

Numbers considered fortunate across different cultures

Chinese Lucky Numbers
6 (smooth), 8 (wealth), 9 (longevity), 88 (double fortune)
+30 priority points
Western Lucky Numbers
7 (classic luck), 3 (magic), 13 (rebellious luck)
+30 priority points

Psychological Patterns

Numbers that feel naturally satisfying

Round Numbers
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
+20 priority points
Even Number Preference
Even numbers feel more balanced: 2, 4, 6, 8, 12, 14
+20 priority points
Sequential Patterns
Ascending (12, 23, 34) or descending (21, 32, 43)
+25 priority points

Basic Preferences

Simple rules for tip endings

Good Endings Only
Prefer tips ending in 0, 2, 5, 7, 8 (avoid 1, 3, 4, 6, 9)
+10 priority points
Half-Dollar Amounts
Allow .50 amounts for small bills (under $15)
+25 context bonus

Search Flexibility

How far from exact percentage to search for better patterns

Small Bills (Under $25)
Search range for pattern matching
±$1
Large Bills ($25+)
Search range for pattern matching
±$3

Safety Rules

Always-active protections

Minimum Tip Protection
Always ensure at least $2 minimum tip
Required - Cannot be disabled
Reasonable Range Check
Never suggest tips below 10% or above 50%
Required - Cannot be disabled