Top up Energy, pay per run
Energy (E) is how you pay for runs. On tools priced in Energy, once your free runs are used up you pay for each run with E, and there is no limit on how many runs you can do.
What is Energy for?
Some tools give a few free runs, and each one comes back 7 days after you use it. Once those are used up, or when a file is over the free limit, that run is paid with Energy. Some tools run only on Energy. Each tool lists its own price per run, and there is no monthly plan.
Each E costs 1,000 VND.
See every tool's price on the pricing pageTop-up packages
Frequently asked questions
How do I top up Energy?
Pick a package, then scan the QR code or transfer using the details shown, with the exact amount and content. Energy reaches your account once the bank reports the payment; there is nothing else to do.
Does Energy expire?
No. Energy you top up stays in your account indefinitely until you spend it, and it is never deducted over time.
I transferred but E hasn't been credited yet, what now?
Energy reaches your account once the bank reports the payment. If it is taking too long, email admin@tachnhac.com with a screenshot of the transfer receipt so it can be checked.
What happens to Energy I don't spend?
Any remaining balance stays in your account for later runs on any tool. It is not lost, and there is no rush to use it.