ProofCalc

CraftLabsStudio

About this app

ProofCalc turns everyday calculations into clear, shareable records.
Add a quick voice note, save with a timestamp, and keep everything organised for later.

How it works

Calculate any amount

Add a voice explanation

Save the record with date & time

Share when needed

Built for clarity and reliability

Voice recordings up to 5 minutes

Automatic gallery save at the 5-minute mark

Auto-save protection to prevent data loss if the app closes unexpectedly (incoming calls, backgrounding, or interruptions)

Timestamped entries for accurate record keeping

Perfect for

Payments and balances

Freelance work and job totals

Splitting costs and expenses

Keeping a clear history of what was agreed

Key features

Calculation history saved as structured records

Voice notes attached to each calculation

Secure data handling

Shareable output (link or file)

ProofCalc helps keep things clear — no confusion, no back-and-forth.

What’s new

Optimized recorded videos: Smaller file sizes in MB for all saved recordings, resulting in less storage space used and faster uploads/sharing.