Jitter vs butterfly clicking, honestly
Both techniques exist to beat a limit your hand runs into around 8 or 9 clicks a second: past that speed, deliberately flexing one finger over and over stops scaling. Jitter and butterfly get around it in ways that have nothing in common mechanically, and that difference matters more than the CPS number either one produces.
Jitter: borrow the tremor
Jitter clicking works by tensing the forearm — gripping the mouse harder than normal and holding that tension — until a natural muscle tremor starts moving the finger against the button. You're not clicking in the usual sense; you're vibrating and letting the vibration land on the switch. It typically lands in the 10–14 CPS range and it's exhausting almost immediately, because sustained isometric tension is one of the more fatiguing things a small muscle group can do. Our jitter course measures exactly this — not your burst number, but how long you can actually hold the tremor above a target rate before it collapses.
Butterfly: alternate and let the switch keep up
Butterfly clicking is closer to normal clicking, just doubled — index and middle finger alternate on the same button, each one clicking at a manageable, unhurried pace while the other recovers. It reaches further, 12–20 CPS for most people who practice it, but it has a hardware ceiling jitter doesn't: the mouse switch needs to physically reset between presses, and on some models a second finger's press arrives while the switch is still settling from the first and simply doesn't register. If your butterfly score matches your normal score, that's the mouse eating the difference, not your fingers failing.
The part the highlight reels skip
Neither technique is free, and they extract payment differently. Jitter's cost shows up in the forearm and wrist — sustained tension in the muscles that control finger movement is a textbook setup for tendon irritation, and people who jitter-click for long sessions report the same ache competitive typists get, in the same tendons. Butterfly's cost concentrates in the finger joints themselves, from the repeated rapid-fire impact of two fingers hammering one small switch; it's a more localized strain, closer to what happens to a drummer's wrist than a typist's forearm.
This is ordinary repetitive strain injury territory, not a rare complication. The standard advice for any repetitive-motion activity applies without modification: warm up before long sessions, stop at the first hint of ache rather than pushing through it, and treat a technique that hurts the next morning as a signal, not a toughness test. A few extra CPS on a click test is not worth a tendon issue that outlasts the game you were practicing for.
So which one should you use
Depends entirely on what you're doing with it. For a one-off number to beat a score, whichever technique your hand already finds more natural will get you there faster to learn. For anything sustained — a long session, a real match — the honest answer is neither serves you as well as people claim, because both degrade your aim while active: jitter shakes your whole hand, butterfly splits your attention across two fingers doing different jobs. A rectangle on a screen doesn't notice the wobble. A moving target does. If you want to know how a technique holds up under something closer to real conditions, the aim trainer scores hit rate alongside speed, and it's a fast way to see whether a technique is actually helping or just making the number bigger while everything else gets worse.
And if either technique starts producing clicks with impossibly short gaps between them — under 15 milliseconds, faster than any finger regardless of trick — run the double-click checker before crediting the technique. Sometimes the "improvement" is a mouse switch starting to fail, not a hand getting better.