# OpenPaths vs Holdover Calculator

The clearest difference is review sentiment: Holdover Calculator at 83% against OpenPaths's 44%. Holdover Calculator also leads on update cadence (every 8 months vs every 35 months) and chart position (#185 vs unranked). OpenPaths's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Holdover Calculator sells 1 in-app purchase, starting at $9.99 per year. OpenPaths asks for nothing beyond the download.

OpenPaths ships an update every 35 months, Holdover Calculator every 8 months. The most recent releases landed on June 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | OpenPaths | Holdover Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/openpaths/id493605283/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 43.8% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 8 months** |
| Monetization | **Free** | Subscription |
| Best chart rank | — | **#185** |
| Size | 15 MB | 23 MB |
| Requires iOS | **7.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [University of California, San Diego (Business Affairs)](https://appshunter.io/developer/318646415) | [Kilo Lima Management, LLC](https://appshunter.io/developer/767164799) |

## What reviewers say

### OpenPaths

[App page](https://appshunter.io/ios/app/openpaths/id493605283)

Securely store and visualize your personal location history. Track your movements, upload data to a website for download in various formats, and control who can access your information. Offers API integration and runs with minimal battery drain.

**Highlights:** Location tracking, Data visualization, Data export (KML, JSON, CSV), Secure data locker, API integration, Background operation, Minimal battery drain

**Features:** macOS Compatibility

**In-app purchases:** none


### Holdover Calculator

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

**Currently charting:** #185 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

**In-app purchases (1)**

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


## Frequently asked questions

### Is OpenPaths free?

OpenPaths is free to download, with no in-app purchases.

### Is Holdover Calculator free?

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

### Do OpenPaths or Holdover Calculator have ads?

Neither OpenPaths nor Holdover Calculator shows ads.

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

OpenPaths ships an update every 35 months, and Holdover Calculator every 8 months. Most recently, OpenPaths was updated on June 11, 2026 and Holdover Calculator on September 22, 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.*