ProofCalc

ProofCalc lets you solve calculations while recording a clear explanation with your voice. Instead of just showing a result, ProofCalc allows you to create a short proof video that demonstrates how the calculation was performed. This makes it ideal for teachers, students, tutors, professionals, and anyone who needs to explain or verify a calculation. Key Features • Clean and fast calculator interface • Record voice explanations while calculating • Export a short proof video of the calculation process • Automatic timestamp watermark for verification • Share proof videos easily • Calculation history for quick reference Privacy First ProofCalc does NOT record your entire device activity. Only the ProofCalc app screen is recorded while you use the calculator. Other apps, notifications, and system activity are never captured. No personal data is collected, stored, or transmitted. All recordings remain on your device unless you choose to share them. Recording Limits To keep videos clear and lightweight, recordings are limited to a maximum duration of 5 minutes. Perfect For • Teachers explaining math problems • Students showing their work • Tutors creating quick explanations • Professionals verifying calculations • Anyone who needs to demonstrate a calculation clearly ProofCalc turns calculations into clear, shareable proof.