Airdatalink does not provide an unlimited data eSIM for Singapore. All Singapore‑specific plans in its portfolio are fixed‑data bundles that carry a 50 GB data allowance and a set validity period. Examples include the Singapore eSIM — 50 GB · 15 days, the Singapore eSIM — 50 GB · 30 days, and the Singapore eSIM — 50 GB · 180 days, each priced between $10.35 and $63.36 USD.
Choosing a fixed‑data plan can be more cost‑effective for most travelers, especially if they need a predictable amount of data for a short stay. Unlimited plans are typically far more expensive and are not offered by airdatalink for Singapore.