# Microwave Time Calculator vs Spool Tracker

The clearest difference is in-app purchases: Microwave Time Calculator at none against Spool Tracker's 2. Microwave Time Calculator also leads on iOS requirement (12.0 vs 15.0). Spool Tracker's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Spool Tracker sells 2 in-app purchases, starting at $4.99 per month. Microwave Time Calculator asks for nothing beyond the download.

Microwave Time Calculator ships an update every 5 months, Spool Tracker fortnightly. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Microwave Time Calculator | Spool Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/microwave-time-calculator/id1611149144/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Ad-supported | — |
| Size | 27 MB | 36 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yudai Abe](https://appshunter.io/developer/1566818989) | [Three19 Pty Ltd](https://appshunter.io/developer/1873148699) |

## What reviewers say

### Microwave Time Calculator

[App page](https://appshunter.io/ios/app/microwave-time-calculator/id1611149144)

Easily calculate microwave heating times based on wattage and desired duration. It offers a convenient chart for quick lookups and remembers your frequently used settings. This tool serves as a helpful guide for optimal food preparation.

**Highlights:** Heating time conversion by wattage, Quick lookup chart, Retains previous entries, Supports 100W to 3000W, Calculates 10 seconds to 30 minutes

**Features:** macOS Compatibility

**In-app purchases:** none


### Spool Tracker

[App page](https://appshunter.io/ios/app/spool-tracker-spoolvault/id6758485486)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpoolVault Premium | $4.99 | per month |
| SpoolVault Premium | $49.99 | per year |


## Frequently asked questions

### Is Microwave Time Calculator free?

Microwave Time Calculator is free to download, with no in-app purchases.

### Is Spool Tracker free?

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

### Do Microwave Time Calculator or Spool Tracker have ads?

Microwave Time Calculator shows ads; Spool Tracker does not.

### Which is updated more often, Microwave Time Calculator or Spool Tracker?

Microwave Time Calculator ships an update every 5 months, and Spool Tracker fortnightly. Most recently, Microwave Time Calculator was updated on October 10, 2026 and Spool Tracker on October 1, 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.*