Keep It Like a Secret received mostly positive reviews when it was first released. On
Metacritic, the album has a score of 79 out of 100, indicating "generally positive reviews." Christopher Hess of
The Austin Chronicle wrote that Doug Martsch's "guitar vocabulary [...] gives 'Center of the Universe' an intrinsically bright tone, and infuses 'Else' with stunning beauty," while praising Scott Plouf's drumming as being "spot on throughout, providing active punctuation for the multiple layers of guitar." Not all contemporary reviews were positive.
Trouser Press called
Keep It Like a Secret "pure BTS, but without enough sparkle or rough-hewn beauty to be memorable." In another mixed review,
Q wrote, "Built to Spill sound as if they're trying too hard, and ultimately both
The Flaming Lips and
Mercury Rev do this sort of thing with far more panache." In a retrospective review published in 2013, Kevin McFarland of
The A.V. Club called the album "perhaps the best encapsulation of the band's oeuvre and the ever-simmering public response in a single phrase." Pitchfork named the album the best album of 1999. Staff writer Garrett Martin explained: "Built to Spill essentially has two fanbases, the indie-pop kids who loved 1994’s
There’s Nothing Wrong With Love and the fans of rock god virtuosity who consider 1997’s sprawling
Perfect From Now On to be truly perfect. 1999’s
Keep It Like A Secret is the band’s best album because it falls perfectly in-between those two extremes. It’s full of amazingly catchy rock songs with fantastic guitar work and Doug Martsch’s nostalgic lyrics and elegiac, Neil Young-ian voice." ==Track listing==