Sigma
Sigma ROX 12.1 Evo
$379.95
Released 2023-06
Best Bike Computers · head-to-head
Sigma ROX 12.1 Evo vs iGPSport iGS630
A sourced, side-by-side comparison. iGPSport iGS630 is cheaper at $219.99. Every spec and price links to its source.
iGPSport
iGPSport iGS630
$219.99Cheaper
Released 2022
Which is better: the Sigma ROX 12.1 Evo or iGPSport iGS630?
The iGPSport iGS630 wins 1 of the 1 specs we compare head to head; the other wins 0. The iGPSport iGS630 is the cheaper at $219.99. The iGPSport iGS630 both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sigma ROX 12.1 Evo | iGPSport iGS630 |
|---|---|---|
| US price | $379.95 MSRP, basic set (device + mount) | $219.99 |
| Brand | Sigma | iGPSport |
| Released | 2023-06 | 2022 |
| Display size (in) | 3.0 in | 2.8 in |
| Touchscreen | Yes | No |
| Battery life hours | 14 | 35 |
| Preloaded maps | Yes | Yes |
| Multiband gnss | No | No |
| Connectivity | ANT+, Bluetooth, Wi-Fi | ANT+, Bluetooth |
| Weight (g) | 112 | 88 |
| Release | 2023-06 | 2022 |
Sources — Sigma ROX 12.1 Evo: sigma.bike (verified 2026-06-19). iGPSport iGS630: thesweetcyclists.com (verified 2026-07-10).
What's the difference between the Sigma ROX 12.1 Evo and iGPSport iGS630?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Display size (in): Sigma ROX 12.1 Evo 3.0 in vs iGPSport iGS630 2.8 in
- Touchscreen: Sigma ROX 12.1 Evo true vs iGPSport iGS630 false
- Battery life hours: Sigma ROX 12.1 Evo 14 vs iGPSport iGS630 35
- Connectivity: Sigma ROX 12.1 Evo ANT+, Bluetooth, Wi-Fi vs iGPSport iGS630 ANT+, Bluetooth
- Weight (g): Sigma ROX 12.1 Evo 112 vs iGPSport iGS630 88
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Sigma ROX 12.1 Evo
Only one whitelisted tester (BikeRadar) published a hands-on review of this exact model. BikeRadar rated it 2/5, praising easy route-following and rich training data but panning meagre battery life (10h with a heart rate monitor only; 4.5h navigating with sensors), a rain-triggered touchscreen, cheap build and an uncompetitive £379.95 price. (1 sourced review, 1 lab-tested.)
Praised: Easy-to-follow turn-by-turn navigation and clear routing; Data-rich training metrics with a capable companion app.
Flagged: Meagre battery life, far below the claimed 14 hours; Touchscreen misbehaves in rain, skipping pages and changing settings; Uncompetitive £379.95 price versus Garmin/Wahoo rivals.
iGPSport iGS630
No sourced tester review yet.