Nice App
Overall a nice app to have.
Yes, Timer 555 Calculator Pro is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
Timer 555 Calculator Pro is free.
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Overall a nice app to have.
This is an excellent tool for calculating the best values for a 555 circuit.
I made an astable NE555 timer/square wave generator according to app instructions (using 2% components). The result was spot on. Nice.