Full protection.
Barely touches your battery.
Most VPNs quietly drain your phone in the background. LunoVPN was engineered to sip power — so you can stay protected all day and still have battery to spare.
Get LunoVPNWhere the power usually goes
A VPN keeps a secure tunnel alive around the clock. On many apps that means constant encryption on the CPU, chatty keep-alive traffic that wakes the radio again and again, and heavy legacy protocols doing far more work than they need to. Every wakeup and every extra CPU cycle costs battery.
LunoVPN attacks all three: a lean protocol, a mobile-friendly cipher, and smart idle handling — explored (and measured) in the simulations below.
Battery over a full day
Drag the slider to move through the day and see how much battery the VPN itself has used — LunoVPN vs a typical VPN.
Figures are illustrative averages for the VPN’s own consumption on top of normal device use; real numbers vary by device, signal, and workload.
Engineered to be efficient
Four design choices that keep the tunnel light on power.
Lean LunoGuard protocol
Our WireGuard-based protocol is a fraction of the code of legacy VPNs — fewer CPU cycles per packet means less heat and less drain.
Mobile-friendly ChaCha20
ChaCha20-Poly1305 is built to run fast and cheap on phone processors, keeping encryption gentle on the battery.
Smart keep-alives
Adaptive keep-alive timing wakes the radio far less often, so the connection stays up without constant chatter.
Idle-aware tunnel
When nothing’s moving, the tunnel goes quiet instead of burning cycles — then resumes instantly on demand.
Fewer radio wakeups
Batching and efficient packet handling let the modem sleep more, which is where most VPN battery cost hides.
Small footprint
A tiny, focused app with no bloated background services running down your battery behind the scenes.
Encryption that’s light on the CPU
The cipher your VPN uses matters. On mobile chips, ChaCha20-Poly1305 is designed to encrypt with minimal CPU work — and less CPU work means less battery, especially on devices without dedicated AES hardware.
Let the modem sleep
Every time a VPN pings to keep the tunnel alive, it wakes your phone’s radio — one of the biggest hidden battery costs. Here’s a minute of keep-alive activity, side by side:
What it means day to day
Leaving LunoVPN on all day feels like leaving it off.
Honest note
Any VPN uses some battery — there’s no such thing as zero. Our goal is to make that cost so small you don’t notice it. The exact impact depends on your device, signal strength, and how much you’re transferring; the numbers here are representative averages, not guarantees.
