# Holdover Time vs Simple FTL Calculator

The clearest difference is price: Holdover Time at Free against Simple FTL Calculator's $3.99. Holdover Time also leads on update cadence (every 2 weeks vs every 4 months). Simple FTL Calculator's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Holdover Time is free to download; Simple FTL Calculator costs $3.99 up front. Holdover Time sells 3 in-app purchases, starting at $4.99 per year. Simple FTL Calculator asks for nothing beyond the download.

Holdover Time ships an update every 2 weeks, Simple FTL Calculator every 4 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Holdover Time | Simple FTL Calculator |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/holdover-time/id1600468704/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 50 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Farhadi](https://appshunter.io/developer/1191731876) | [Yiu Leung Sze](https://appshunter.io/developer/1816049574) |

## What reviewers say

### Holdover Time

[App page](https://appshunter.io/ios/app/holdover-time/id1600468704)

Calculate essential deicing holdover times with the latest FAA guidelines for the 2025-2026 winter season. This tool provides accurate calculations for various fluid types and includes a real-time countdown timer for enhanced situational awareness.

**Highlights:** Up-to-date FAA Holdover Time Guidelines (2025-2026), Calculations for Fluid Types II, III, & IV, Customized notes for specific fluids, Intuitive interface for aviation professionals, Real-time Holdover Time Countdown Timer, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hold Over Time Calculator | $4.99 | per year |
| Hold Over Time Calculator | Free | one-time |
| Holdover Time - Life Time | $24.99 | one-time |


### Simple FTL Calculator

[App page](https://appshunter.io/ios/app/simple-ftl-calculator/id6746280039)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Holdover Time free?

Holdover Time is free to download, with in-app purchases available.

### Is Simple FTL Calculator free?

Simple FTL Calculator costs $3.99, with no in-app purchases.

### Do Holdover Time or Simple FTL Calculator have ads?

Neither Holdover Time nor Simple FTL Calculator shows ads.

### Which is updated more often, Holdover Time or Simple FTL Calculator?

Holdover Time ships an update every 2 weeks, and Simple FTL Calculator every 4 months. Most recently, Holdover Time was updated on October 13, 2026 and Simple FTL Calculator on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*