Apps like InstaSub

Here are some great alternatives to InstaSub by TCP Software :
SubSidekick - Frontline Aesop
SubSidekick - Frontline Aesop
★4.1
SubAlert for Frontline Ed
SubAlert for Frontline Ed
★4.7
Red Rover K12
Red Rover K12
★4.4
Unified Talent Mobile
Unified Talent Mobile
★3.9
tamigo
tamigo
★4.0
absence.io
absence.io
★3.8
NEXON-PORT+
NEXON-PORT+
★4.3
Frontline Education
Frontline Education
★4.3
Matrix eServices Mobile
Matrix eServices Mobile
★4.4
PARiM Workforce Software
PARiM Workforce Software
★3.8
Calamari
Calamari
★4.3
Chronotek Classic
Chronotek Classic
★3.4
Qcera MyLeave
Qcera MyLeave
★3.4
Luttrell Works
Luttrell Works
★3.6
TimeWorksPlus
TimeWorksPlus
★3.5
Altametrics Schedules
Altametrics Schedules
★3.7