Remember the Milk (RTM) announced yesterday on their blog, that the iPhone app will be available for free, even without having to pay for their Pro account (value: $25). The basic app is available to download for free, but with restrictions. The basic app only allows manual syncing once every 24 hours and no push notifications. Aside from those two restrictions, the app is completely at your disposable.
The Android version of RTM allows free download with a 15-day trial, or exclusively for Pro account holders. According to Phandroid, RTM stated in their twitter account that they want to get feedback first from the iPhone users to see if they want to make changes to all their services. This could even persuade more people to try it and see if it's really worth the price tag.