Provider deep-dive
Yesim review (2026): rank 1 on eSIMBench at 78 of 100
Yesim leads the Q2 2026 eSIMBench leaderboard at 78 of 100 (B+) on the strength of a 90/100 Fair Use & Refunds dimension — the cleanest published policy stack in the tracked field.
June 1, 2026 · eSIMBench Editorial
Yesim sits at the top of the Q2 2026 eSIMBench leaderboard with 78 of 100 (B+), based on three of the eight scoring dimensions: App Quality (79.6), Fair Use & Refunds (90), and Hotspot & Tethering (50). It is the only provider on the leaderboard whose Fair Use & Refunds score crosses 85 — every cell in its published policy set scored on the consumer-friendly side of the rubric, which is rare in this category.
The 79.6 App Quality figure is built from roughly 100 recent iOS reviews mined by eSIMBench, averaging 4.0/5 across the sample. Yesim is operated by Genesis Group AG; the iOS app ID is 1458505230. The activation reviews skew positive but include the same handful of complaints every eSIM app generates around unsupported devices and dual-SIM provisioning edge cases.
Hotspot & Tethering at 50 means: the provider’s terms do not clearly state either an allow or a block. eSIMBench’s rubric scores ambiguous hotspot terms at the neutral midpoint rather than guessing — see the methodology for the full rubric. If hotspot use matters to a buying decision, treat Yesim’s score there as “unverified, not endorsed.”
The five pending dimensions — Speed & Coverage (25% weight), Pricing Value (20%), Plan Flexibility (10%), Customer Support (10%), and 5G Access (10%) — together represent 75% of a full bench score. Yesim’s #1 position is partial; it is computed across only the 25% of the weight that has data today, and will move as the rest lands. That is the same caveat applied to every provider, but it is worth stating explicitly when looking at a rank-1 result.
What Yesim looks like on its own terms: an established Swiss-domiciled provider with a coverage list spanning 150+ countries, eSIM-only (no physical SIMs), per-country and regional plans, and unlimited-tier plans on a per-day basis. The published terms are unusually direct compared to the field — the refund window and conditions are stated in plain language, which the rubric rewards.
The honest comparison to make at the top of this leaderboard is Yesim vs Airalo at #2. Both are partial scores; the spread between them is 1.5 points, which is inside the noise band of a benchmark built on a quarter of the dimension weight. Neither result should be read as “Yesim is decisively better than Airalo across the board.” It should be read as “based on the policy and app data we’ve verified, Yesim is currently slightly ahead.” The full head-to-head comparison breaks it down dimension by dimension.
For the buyer: Yesim is a reasonable shortlist pick if published policy terms matter to the decision and the trip is short enough that capped plans suffice. For long-stay nomads on truly heavy data, the Speed and Pricing dimensions — both still pending here — will matter more than the policy delta.