# DriveZero! vs Barley Driver

The clearest difference is in-app purchases: Barley Driver at none against DriveZero!'s 2. Barley Driver also leads on iOS requirement (15.0 vs 17.6). DriveZero!'s advantage is update cadence (every 3 weeks vs every 6 weeks) and ratings volume (3 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. DriveZero! sells 2 in-app purchases, starting at $3.00 per month. Barley Driver asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DriveZero! against 5.0 for Barley Driver. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

DriveZero! ships an update every 3 weeks, Barley Driver every 6 weeks. The most recent releases landed on September 16, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | DriveZero! | Barley Driver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/drivezero/id6670489820/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/barley-driver/id6743386714/reviews) |
| Number of ratings | **3** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 93 MB | 85 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Drive Zero, LLC](https://appshunter.io/developer/1766504362) | [Barley group LLC](https://appshunter.io/developer/1767398048) |

## What reviewers say

### DriveZero!

[App page](https://appshunter.io/ios/app/drivezero/id6670489820)

Track your vehicle's CO2 emissions in real-time and offset your carbon footprint through certified projects. Get insights to reduce your impact and join a community dedicated to fighting climate change.

**Highlights:** Real-time CO2 emission tracking, Weekly and monthly emission reports, Tips to reduce environmental impact, Purchase carbon offsets, Community building

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonthlySubscrption | $3.00 | per month |
| YearlySubscription | $30.00 | per year |


### Barley Driver

[App page](https://appshunter.io/ios/app/barley-driver/id6743386714)

This app is designed for professional drivers to enhance their experience. It aims to meet and exceed the expectations of both new and experienced individuals in the taxi industry.

**Highlights:** Driver-focused experience, Caters to taxi industry needs, Designed for professional drivers, Exceeds expectations

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is DriveZero! free?

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

### Is Barley Driver free?

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

### Which has better reviews, DriveZero! or Barley Driver?

DriveZero! and Barley Driver are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do DriveZero! or Barley Driver have ads?

Neither DriveZero! nor Barley Driver shows ads.

### Which is updated more often, DriveZero! or Barley Driver?

DriveZero! ships an update every 3 weeks, and Barley Driver every 6 weeks. Most recently, DriveZero! was updated on September 16, 2026 and Barley Driver on September 15, 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.*