# FilterFit vs Unit Converter

The clearest difference is review sentiment: Unit Converter at 100% against FilterFit's 0%. Unit Converter also leads on price (Free vs $0.99) and ads (none vs shown). FilterFit's advantage is in-app purchases (none vs 2). On update cadence, monetization model and device support there is nothing between them.

Unit Converter is free to download; FilterFit costs $0.99 up front. Unit Converter sells 2 one-off in-app purchases. FilterFit asks for nothing beyond the download.

FilterFit ships an update weekly, Unit Converter every 10 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FilterFit | Unit Converter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free | Free |
| Size | 10 MB | 25 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Bryan Carroll](https://appshunter.io/developer/1781449489) | [磊 刘](https://appshunter.io/developer/1892400556) |

## What reviewers say

### FilterFit

[App page](https://appshunter.io/ios/app/filterfit/id6759184754)

Easily find the correct automotive filters and wiper blades for your vehicle. Input your car's details or scan the VIN to get precise OEM and aftermarket part numbers. Direct links to purchase from major retailers are provided.

**Highlights:** Vehicle-specific filter and wiper lookup, VIN scan or manual vehicle selection, OEM and aftermarket part number matches, Direct links to retailers, Save vehicles and set service reminders, EV-aware filter identification

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-free-and-easy/id6762030231)

This free unit converter offers over 40 categories and 200+ currencies with live exchange rates. It features batch conversion, offline functionality, and a user-friendly interface with dark mode. All features are permanently free with no sign-up or data collection.

**Highlights:** 40+ conversion categories, 200+ currencies with live rates, Batch conversion, Offline functionality, Dark mode, CSV export

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unit Conversion Standard Version | $2.99 | one-time |
| Unit Conversion Pro Edition | $5.99 | one-time |


## Frequently asked questions

### Is FilterFit free?

FilterFit costs $0.99, with no in-app purchases.

### Is Unit Converter free?

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

### Do FilterFit or Unit Converter have ads?

FilterFit shows ads; Unit Converter does not.

### Which is updated more often, FilterFit or Unit Converter?

FilterFit ships an update weekly, and Unit Converter every 10 days. Most recently, FilterFit was updated on November 9, 2026 and Unit Converter on October 31, 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.*