# Holdover Calculator vs Bumpwise

The clearest difference is monetization model: Bumpwise at free with in-app purchases against Holdover Calculator's subscription. Bumpwise also leads on update cadence (every 2 days vs monthly) and ratings volume (10 vs 1). Holdover Calculator's advantage is rating (5.0 vs 4.8) and chart position (#182 vs unranked). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Holdover Calculator sells 1 in-app purchase, starting at $9.99 per year and Bumpwise sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Holdover Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Bumpwise has 10 ratings behind it against 1, so its average is the more settled of the two.

Holdover Calculator ships an update monthly, Bumpwise every 2 days. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Holdover Calculator | Bumpwise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/holdover-calculator/id768019181/reviews)** | [4.8 (10 ratings)](https://appshunter.io/ios/app/bumpwise-flight-tracker/id6788057905/reviews) |
| Number of ratings | 1 | **10** |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#182** | — |
| Size | 24 MB | 102 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kilo Lima Management, LLC](https://appshunter.io/developer/767164799) | [Snowflake Studio LLC](https://appshunter.io/developer/1892931345) |

## What reviewers say

### Holdover Calculator

[App page](https://appshunter.io/ios/app/holdover-calculator/id768019181)

**Currently charting:** #182 Top Grossing · Weather (US App Store)

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.

**Highlights:** 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

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Year Subscription | $9.99 | per year |


### Bumpwise

[App page](https://appshunter.io/ios/app/bumpwise-flight-tracker/id6788057905)

This app analyzes aviation and weather data to provide a minute-by-minute turbulence forecast for your specific flight. It offers a clear score, timeline, and explanations to help nervous flyers feel more confident.

**Highlights:** Flight-specific turbulence scoring, Minute-by-minute turbulence timeline, Live flight tracking, Guided calm breathing exercises, Global turbulence and weather map, Flight history and passport

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bumpwise Monthly | $9.99 | per month |
| Bumpwise Yearly | $59.99 | per year |
| Single Flight Report | $2.99 | one-time |


## Frequently asked questions

### Is Holdover Calculator free?

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

### Is Bumpwise free?

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

### Which has better reviews, Holdover Calculator or Bumpwise?

Holdover Calculator is rated higher. Holdover Calculator averages 5.0 out of 5 from 1 ratings, while Bumpwise averages 4.8 from 10 ratings.

### Do Holdover Calculator or Bumpwise have ads?

Neither Holdover Calculator nor Bumpwise shows ads.

### Which is updated more often, Holdover Calculator or Bumpwise?

Holdover Calculator ships an update monthly, and Bumpwise every 2 days. Most recently, Holdover Calculator was updated on November 6, 2026 and Bumpwise on November 10, 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.*