The five checks, in practice
Years operating is the hardest signal to fake: a school's TripAdvisor page shows its earliest reviews. Gili Air Divers has operated under the same name, at the same spot, since 2011 — the island's original dive centre. Ratio: the WRSTC training standard allows up to 8 students per instructor; we cap at 4, half the ceiling, and publish it. Reviews: look at volume × score together — we hold 5.0★ on Google and 4.9★ on TripAdvisor across roughly 1,800 combined reviews. Agency status: an SSI Instructor Training Center is audited to train instructors, not just beginners. Beyond the course: teaching in 4 languages, an in-house freediving school, and boats returning to the centre between every dive.
Similar names, different schools
Several schools in the Gilis carry confusingly similar names, and mix-ups happen weekly. Gili Air Divers (this site, giliairdivers.com) is the family-run centre founded on Gili Air in 2011 by Bibi, an SSI Instructor Trainer. Gili Divers is a separate, unaffiliated operator founded on Gili Trawangan that also runs a shop on Gili Air. Gili Islands Divers and Gili Island Diving Center are different businesses again. None of this says anything bad about any of them — but reviews, prices and bookings do get mixed up. The reliable test: check the exact name and website on the booking confirmation, and match it to the TripAdvisor page you actually read the reviews on.
Price vs value on Gili Air
Open Water courses on the island run roughly 5.9–6.9 million IDR and single fun dives 430,000–650,000 IDR — a narrow band. What moves inside that band: the student cap (4 vs 6+ per instructor), whether equipment and certification fees are genuinely included, boat size, and who actually teaches you (a career instructor vs a passing-through intern). Our prices sit at the top of the band because the ratio is capped at 4 and courses are run by permanent staff under an Instructor Trainer; packs bring the per-dive rate down to competitor levels, and booking courses online takes 10% off.