Terms of Use
Updated October 15, 2026
TachTime 91 is owned by Dumb Luck Media LLC, Arimo, Idaho.
Planning aid only
TachTime 91 is a planning aid, not a logbook. Keep your official records in your aircraft logbooks.
Airworthiness
The owner or operator decides airworthiness. Always verify with your logbooks and your A&P/IA.
No warranty
TachTime 91 is provided as is, with no warranty of any kind.
AI estimates
AI numbers are estimates. Check real quotes before you rely on them.
Paid plans
The tracker is $8 per month or $79 per year for each aircraft, billed through Stripe, with a 30-day free trial. No card is needed to start; if no card is added by the end of the trial, the plan ends and nothing is charged. You can cancel anytime from Manage billing; you keep access until the end of the paid period. For refund questions email support@dumbluckmedia.com. The break-even calculator stays free. You can download a backup of your data at any time.