Holdover Calculator

Holdover Calculator

Pre-departure anti-ice advisor

0 ratings
6 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 3, 2014
  • June 26, 2026

Features

Holdover Calculator screenshot #1 for iPhone
Holdover Calculator screenshot #2 for iPhone
Holdover Calculator screenshot #3 for iPhone
Holdover Calculator screenshot #4 for iPhone
Holdover Calculator screenshot #5 for iPhone
Holdover Calculator screenshot #6 for iPhone
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About

This tool simplifies the calculation of aircraft de-icing fluid holdover times. It offers manual input or automatic weather data retrieval for quick and accurate results. The app provides alerts for expired times and includes a pre-takeoff check timer.

Accurate holdover time verification
User-friendly input display
Automatic METAR weather retrieval
Location-based METAR search
Active holdover time countdown
Audible and visible expiration alerts
Pre-takeoff contamination check timer
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What's New in Holdover Calculator

v2.1.1

June 26, 2026

Version 2.1.1 • In-app notices. Holdover Calculator can now show the occasional important notice — app updates and time-critical information — right in the app, as a card you can dismiss. They're pulled from a public file: no account, no tracking. Revisit past notices anytime from the new Messages item in the ••• menu, and turn them off in Settings. Critical safety notices always show. Plus reliability and clarity improvements throughout. Fly safe. PRIOR Version 2.1 • Organization deployment for flight departments. Holdover Calculator can now be licensed across a managed fleet through Apple Business Manager and MDM — no per-device Apple Account or App Store sign-in required. Contact us to set it up. • Read it at a glance. Tap any orange advisory note — or any setting's description — to enlarge it in a comfortable card sized for reading-distance glasses. Drag down or tap Done to dismiss. • Cockpit Sync now correctly identifies Mac devices in the nearby-pilots list (they previously appeared as "iPad"). • Settings and Help no longer close on an accidental swipe — tap Done to dismiss, so a long scroll isn't lost. • Includes the 2.0.1 fix for restoring an active subscription on a new device.

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Subscription plans

1 Year Subscription

Required to make holdover calculations

$9.991 Year
7 Days trial
How to cancel Holdover Calculator subscription ⁉️

User reviews

Pricing policy

You should say someplace WHAT the price of the annual subscription is!
It may be a great app, but I’ve spent too much money on useless aviation apps to risk spending money on this. A one week trial, and or put the cost up front, would make me a lot more willing to try.

Works ok

My main complaint is that the only option is to have an automatic renewal. I have been inconvenienced several times trying to get refunds for things I no longer want. Apple should require the option of turning down automatic renewals!!!

Professional pilot

Awesome application, makes computing holdover times a breeze.

Awesome app

Makes checking holdover time a breeze!

Great App

These guys got it together. Very self explanatory. Easy to use.

Developer apps

FAQ

What is the short name for Holdover Calculator?

The short name for Holdover Calculator is Holdover Calculator.

Does Holdover Calculator have ads?

No, Holdover Calculator does not contain advertisements. It is ad-free.

What is the price of Holdover Calculator?

Holdover Calculator is free to download, but a subscription is required to use its calculation features. The '1 Year Subscription' costs $8.99 and includes a 7-day free trial.

How often is Holdover Calculator updated?

The latest version of Holdover Calculator is 1.9.6, which was last updated on November 2, 2025. Updates are released periodically to improve functionality and reliability.

What devices does Holdover Calculator support?

Holdover Calculator is available for iPhone, iPad, and iPod touch devices.

What is the age rating for Holdover Calculator?

Holdover Calculator has an age rating of 4+, making it suitable for a wide range of users.

How do I manage my Holdover Calculator subscription?

You can manage your subscription and turn off auto-renewal by going to your device's Account Settings after purchase. Subscriptions automatically renew unless turned off at least 24 hours before the current period ends.

Can Holdover Calculator be used without an internet connection?

Computations can be performed without a data connection. However, an internet connection is required for the 'Auto-Populate' feature to retrieve weather conditions from METARs.