Calcsimple _verified_

| Mistake | What happens | Fix | |---------|--------------|-----| | Pressing = after each operation | 3+4= shows 7, then pressing *2 multiplies 7*2 | Just keep typing operators without = until the end | | Using % after + or - incorrectly | 100 + 50 % = 150 (correct), but 100 + 50 % + 20 = 170? No: 100 + 50 % = → 150, then +20 = 170 | Clear with CE between different percent contexts | | Memory not cleared | Old subtotal still inside MR | Press MC before starting new calculation | | Typing 00 when you meant 0 | 100 vs 10000 | Use backspace |

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| Feature | CalcSimple | Phone calculator | Desktop app | |---------|------------|------------------|--------------| | No startup ads | ✅ | ❌ (some) | ✅ | | Keyboard shortcuts | ✅ | ❌ | ✅ (varies) | | Immediate CE without resetting chain | ✅ | ❌ (often C) | ✅ | | Percent logic (add/subtract) | ✅ | ✅ | ✅ | | Left-to-right evaluation | ✅ | ❌ (often precedence) | ❌ (precedence) | | Memory light indicator | M shown on display | ❌ | ✅ | | Mistake | What happens | Fix |