Between the Sage and Libra Colour, the Sage comes out ahead in screen size, while the Libra Colour wins on weight and color screen. Overall, the Sage scores 69.6 and the Libra Colour scores 65.5 on our Mars Score.
Which should you buy?
The Sage edges ahead on the Mars Score (69.6 vs 65.5), but the 4.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Sage if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are screen size.
Pick the Libra Colour if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, color screen.
Both ship with comparable resolution, storage, waterproof, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Kobo - Sage wins
- ▲Screen size — 14.29% more. 8 " vs 7 ".
Why Kobo - Libra Colour wins
- ▲Weight — 41.00 g less. 199 vs 240.
- ▲Has Color screen.
Spec comparison
Display
| Spec | Kobo - Sage | Kobo - Libra Colour |
|---|---|---|
| Screen sizeⓘ | 8 "lead | 7 " |
| Resolution | 300 ppi | 300 ppi |
| Color screen | false | truelead |
| Warm light | true | true |
Design
| Spec | Kobo - Sage | Kobo - Libra Colour |
|---|---|---|
| Weight | 240 g | 199 glead |
| Waterproof | true | true |
| Page-turn buttons | true | true |
Storage & Battery
| Spec | Kobo - Sage | Kobo - Libra Colour |
|---|---|---|
| Storageⓘ | 32 GB | 32 GB |
| Battery life | 8 weekslead | 6 weeks |
Frequently asked
Spec-level deep dives
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