# 3 Grams Unit Converter vs UnitStack

The clearest difference is in-app purchases: UnitStack at none against 3 Grams Unit Converter's 6. 3 Grams Unit Converter's advantage is iOS requirement (9.0 vs 18.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. 3 Grams Unit Converter sells 6 one-off in-app purchases. UnitStack asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 3 Grams Unit Converter against 5.0 for UnitStack. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | 3 Grams Unit Converter | UnitStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/3-grams-unit-converter/id1540699020/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/unitstack/id6757423947/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 91 MB | 4 MB |
| Requires iOS | **9.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RizBit](https://appshunter.io/developer/1499163709) | [Michael Yang](https://appshunter.io/developer/1866843188) |

## What reviewers say

### 3 Grams Unit Converter

[App page](https://appshunter.io/ios/app/3-grams-unit-converter/id1540699020)

Easily convert between various units of measurement and currencies, even offline. This tool helps with everyday tasks like cooking, travel calculations, and understanding different measurements. It offers a wide range of conversion types and a user-friendly interface.

**Highlights:** Offline unit conversion, Offline currency conversion (pre-loaded rates), Supports length, volume, weight, temperature, bytes, time, angles, clothing, and shoe sizes, Fast one-touch conversions, Switch between initial and converted values, Up-to-date world currency exchange rates, Customizable backgrounds

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Conversion Credits | $0.99 | one-time |
| 100 Conversion Credits | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 200 Conversion Credits | $3.99 | one-time |
| 500 Conversion Credits | $8.99 | one-time |
| 1000 Conversion Credits | $16.99 | one-time |


### UnitStack

[App page](https://appshunter.io/ios/app/unitstack/id6757423947)

This utility app allows for simultaneous unit and currency conversions, saving your progress and custom units. Its minimalist design ensures a clear and efficient user experience for all your measurement needs.

**Highlights:** Stack multiple conversions, Persistent values, Custom units of measure, Minimalist interface, Custom color themes, Currency conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3 Grams Unit Converter free?

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

### Is UnitStack free?

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

### Which has better reviews, 3 Grams Unit Converter or UnitStack?

3 Grams Unit Converter and UnitStack are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 3 Grams Unit Converter or UnitStack have ads?

Neither 3 Grams Unit Converter nor UnitStack shows ads.

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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.*