# Hatz HDS²lite vs TopGuru

The clearest difference is rating: Hatz HDS²lite at 5.0 against TopGuru's 3.5. Hatz HDS²lite also leads on in-app purchases (none vs 10) and iOS requirement (10.0 vs 15.0). TopGuru's advantage is update cadence (every 3 weeks vs every 9 months) and ratings volume (414 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. TopGuru sells 9 in-app purchases, starting at $9.99 per month. Hatz HDS²lite asks for nothing beyond the download.

Hatz HDS²lite holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: TopGuru has 414 ratings behind it against 1, so its average is the more settled of the two.

Hatz HDS²lite ships an update every 9 months, TopGuru every 3 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Hatz HDS²lite | TopGuru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hatz-hdslite/id6446262966/reviews)** | [3.5 (414 ratings)](https://appshunter.io/ios/app/topguru/id6451488210/reviews) |
| Number of ratings | 1 | **414** |
| Positive reviews | — | 29.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#155** |
| Size | 90 MB | 2.2 GB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Motorenfabrik Hatz GmbH & Co. KG](https://appshunter.io/developer/1677040238) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### Hatz HDS²lite

[App page](https://appshunter.io/ios/app/hatz-hdslite/id6446262966)

Diagnose Hatz diesel engines wirelessly using your smartphone or tablet. Read error codes, view operating values, reset maintenance indicators, and generate engine reports. Requires the HDS²lite adapter for connection.

**Highlights:** Wireless error code reading, Display current operating values, Reset maintenance indicators, Create and send engine reports, Locate service partners

**In-app purchases:** none


### TopGuru

[App page](https://appshunter.io/ios/app/topguru/id6451488210)

**Currently charting:** #155 Top Grossing · Utilities (US App Store)

Transform your phone or tablet into a powerful vehicle diagnostic tool via Bluetooth. Access full system diagnosis, OBDII functions, bi-directional controls, and essential maintenance services for a wide range of car brands. Generate detailed diagnostic reports for efficient troubleshooting.

**Highlights:** Full System Diagnosis, Full OBD2 Functions, Bi-directional Control, 8 Special Maintenance Functions, AutoVIN Vehicle Identification, Diagnostic Report Generation, Wireless Bluetooth 5.0 Connection

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Auto-renewal | $9.99 | per month |
| Monthly Auto-renewal | $19.00 | per month |
| Quarterly Auto-renewal | $24.99 | per 3 months |
| Annual Auto-renewal | $49.99 | per year |
| Annual Auto-renewal | $99.00 | per year |
| Diag Bundle Renewal | $49.99 | one-time |
| Renewal Bundle | $99.00 | one-time |
| 22 Special Functions Bundle | $129.99 | one-time |
| 17 Special Functions Bundle | $179.00 | one-time |

**What reviewers like**

- 👍 Works well on most vehicles
- 🚀 Powerful features for the price
- 💡 Useful for DIY and professional mechanics

**What reviewers complain about**

- 🐛 Frequent app crashes and bugs
- ⏱️ Slow and cumbersome to use due to constant updates
- 🔒 Concerns about data privacy and security
- 💰 Subscription model after initial purchase

**Reported bugs**

- Incompatibility with certain vehicle models
- Login and account issues
- Unreliable Bluetooth connectivity

**Requested features**

- iPad optimization and full-screen support
- Expanded vehicle coverage, especially for motorcycles
- Ability to save and export diagnostic data


## Frequently asked questions

### Is Hatz HDS²lite free?

Hatz HDS²lite is free to download, with no in-app purchases.

### Is TopGuru free?

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

### Which has better reviews, Hatz HDS²lite or TopGuru?

Hatz HDS²lite is rated higher. Hatz HDS²lite averages 5.0 out of 5 from 1 ratings, while TopGuru averages 3.5 from 414 ratings.

### Do Hatz HDS²lite or TopGuru have ads?

Neither Hatz HDS²lite nor TopGuru shows ads.

### Which is updated more often, Hatz HDS²lite or TopGuru?

Hatz HDS²lite ships an update every 9 months, and TopGuru every 3 weeks. Most recently, Hatz HDS²lite was updated on November 3, 2026 and TopGuru on November 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.*