The best iPhone apps for scientific calculators 2025

• The Expressions Calculator
• Panecal Scientific Calculator
• Free42
• +11

The best iPhone apps for spot the difference

• Spot the Difference: Find 5
• Differences - Find & Spot Them
• Find the Difference Plus HD
• +10

Best Apps to Combine Photos on iPhone for Free

• PicMerger Edit Pics & Collages
• Union - Combine & Edit Photos
• Canva: AI Photo & Video Editor
• +19

The best pinochle apps for iPhone and iPad

• Pinochle+
• Pinochle - Online & offline
• Pinochle

The best greeting cards and e-card apps for iPhone and iPad

• eCards mobile
• 2021 - Happy New Year Cards
• Greeting Cards & Wishes
• +5