Housemarque's action puzzler Furmins HD now exists as a separate Furmins Free app for iOS devices. The free version includes 108 levels across eight worlds, with the first world open by default.
So, where's the microtransactions? Unlocking worlds will cost 100 stars. The exchange rate for stars is 100 for $0.99 (0.79€ / £0.79). Purchasing 700 stars in a bundle, which by our calculation would unlock the whole game, is $3.99 (2.99€, £1.99).
This is the part where we point out Furmins HD – the pay version – is $2.99, saving you, at a minimum, one dollar if you wish to pursue the free version to its conclusion. However, the free version supports Chinese, Korean, and Japanese localization, so that may be of importance.