While both Zoleo and inReach Messenger are excellent and lightweight satellite messengers that are on the Iridium network, there are a few important differences to be aware of. One of these is battery life: The Messenger has a much more robust, longer-lasting battery than the Zoleo. The next is price. The Garmin Messenger has a higher upfront price than the Zoleo, but all this pales in comparison to the subscription prices. The Zoleo costs $20 a month for its lowest priced plan, which includes 25 custom messages and SOS functionality. Suspending service costs $4 if you don’t want to cancel. The lowest cost Garmin inReach plan costs only $8 a month. With that you get SOS capabilities and the ability to pay for text messages on a one-off basis. It’s $0.50 for custom text messages, $0.10 for check-ins, and $1 for the weather. Their next plan is $15 a month and includes 50 custom text messages. However, there is no option to suspend the plan. Ultralight enthusiasts should also note that the Zoleo is about an ounce heavier than the Garmin inReach Messenger.