Below is a comparison chart that delineates the features for the Sentry, Sentry Mini, and the Stratus 3.
| FEATURE | SENTRY |
Sentry Mini |
STRATUS 3 |
| Price | $499 | $299 | $699 |
| Subscription Free ADS-B Weather | ✓ | ✓ | ✓ |
| ADS-B Traffic - 978 MHz (UAT) | ✓ | ✓ | ✓ |
| ADS-B Traffic - 1090 MHz (ES) | ✓ | ✓ | ✓ |
| Built-in WAAS GPS | ✓ | ✓ | ✓ |
| Backup Attitude (built-in AHRS) | ✓ | X | ✓ |
| Flight Data Recorder | X | X | ✓ |
| Pressure Altitude sensor | ✓ | X | ✓ |
| Carbon Monoxide (CO) Monitor | ✓ | X | X |
| USB Type C Connector | ✓ | ✓ | ✓ |
| All-day battery life | 12+ hours | Uses an external battery | 8+ hours |
| Optional remote ADS-B antenna | X | X | ✓ |
| Optional remote GPS antenna | X | X | ✓ |
|
Wi-Fi Connection |
✓ | ✓ | ✓ |
|
ForeFlight Mobile version* |
10.2 or later | 11.6 or later | 10.2 or later |
*: See What Apple iOS versions does ForeFlight support? and What version of ForeFlight will work with my iOS? for details about current and supported versions of ForeFlight Mobile.