Apps like Mapio.
Navigation apps that do what Mapio. does: the App Store's own picks for people who like it in the US.
MapNero: Offline GIS MapsSerhan UCAR · NavigationNo ratings yetFree
NomadTracks: GPS Map TrackerDonkeyCat GmbH · Navigation4.4(12)Free
Field Area MeasureYaroslav Babenko · Navigation4.3(338)Free
Locus Map LiteAsamm Software, s. r. o. · Navigation3.6(8)Free
Map PlusMiocool Inc. · Navigation4.6(640)Free
3D Offline Maps: GPS trackerSERGEI BEZDENEZHNYKH · Navigation4.6(662)Free
GPS Tracker: Offline Maps, GPXSERGEI BEZDENEZHNYKH · Navigation4.6(638)Free
Guru Maps - Offline NavigationEvgen Bodunov · Navigation4.7(3K)Free
SEM MobileUniversidad Nacional de La Plata · Travel4.4(743)Free
Topo Maps+: Topographic MapsGlacier Peak Studios LLC · Navigation4.7(9.5K)Free