# Zerolight Steps vs Devim GPS

The clearest difference is in-app purchases: Zerolight Steps at none against Devim GPS's 1. Zerolight Steps also leads on iOS requirement (15.0 vs 17.2). Devim GPS's advantage is update cadence (every 4 weeks vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Devim GPS sells 1 one-off in-app purchase. Zerolight Steps asks for nothing beyond the download.

Zerolight Steps ships an update every 6 months, Devim GPS every 4 weeks. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Zerolight Steps | Devim GPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/devim-gps-0-60-and-drag-timer/id6761691878/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 99 MB | 27 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Burckaan Gurgun](https://appshunter.io/developer/1593734693) | [KEMAL UTKU LEKESIZ](https://appshunter.io/developer/1890818212) |

## What reviewers say

### Zerolight Steps

[App page](https://appshunter.io/ios/app/zerolight-steps/id6747674625)

**Features:** macOS Compatibility

**In-app purchases:** none


### Devim GPS

[App page](https://appshunter.io/ios/app/devim-gps-0-60-and-drag-timer/id6761691878)

This app measures vehicle acceleration and distance using your iPhone's GPS or an OBD-II adapter. Analyze detailed run data, compare performance, and organize results by vehicle. An Apple Watch companion app is also included.

**Highlights:** 0-60 mph and custom speed range timing, Distance measurement (1/4 mile, 1 mile, etc.), Automatic standing-start detection, GPS and BLE OBD-II adapter support, Detailed run analysis (graphs, splits, G-force), Apple Watch companion app, Vehicle profile organization

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Devim GPS Pro | $9.99 | one-time |


## Frequently asked questions

### Is Zerolight Steps free?

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

### Is Devim GPS free?

Devim GPS is free to download, with in-app purchases available.

### Do Zerolight Steps or Devim GPS have ads?

Neither Zerolight Steps nor Devim GPS shows ads.

### Which is updated more often, Zerolight Steps or Devim GPS?

Zerolight Steps ships an update every 6 months, and Devim GPS every 4 weeks. Most recently, Zerolight Steps was updated on September 23, 2026 and Devim GPS on September 9, 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.*