# VoltApp vs TopGuru

The clearest difference is in-app purchases: VoltApp at none against TopGuru's 30. VoltApp also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (9.0 vs 15.0). TopGuru's advantage is chart position (#195 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. TopGuru sells 21 in-app purchases, starting at $9.99 per month. VoltApp asks for nothing beyond the download.

VoltApp ships an update every 2 days, TopGuru every 3 weeks. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | VoltApp | TopGuru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (409 ratings)](https://appshunter.io/ios/app/topguru/id6451488210/reviews)** |
| Number of ratings | — | **409** |
| Positive reviews | — | 29.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#195** |
| Size | 24 MB | 2.2 GB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SetOcean LLC](https://appshunter.io/developer/847763480) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### VoltApp

[App page](https://appshunter.io/ios/app/voltapp/id1506528741)

**Features:** macOS Compatibility

**In-app purchases:** none


### TopGuru

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

**Currently charting:** #195 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 (21)**

| 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 |
| Renault Gateway  1-Token | $11.99 | one-time |
| Diag Bundle Renewal | $49.99 | one-time |
| TopGuru Diagnostic Bundle | $49.99 | one-time |
| TopGuru IMMO Bundle | $49.99 | one-time |
| Renewal Bundle | $99.00 | one-time |
| TopScan Pro Renewal Bundle | $99.00 | one-time |
| Harley Moto Software | $99.99 | one-time |
| Harley Moto Software Renewal | $99.99 | one-time |
| Moto Diag Bundle Renewal-Moto | $99.99 | one-time |
| Moto Diag Bundle | $99.99 | one-time |
| Moto Diag Bundle Renewal | $99.99 | one-time |
| 22 Special Functions Bundle | $129.99 | one-time |
| Renault Gateway 10 Tokens | $129.99 | one-time |
| Renault Gateway 5 Tokens | $147.99 | one-time |
| 17 Special Functions Bundle | $179.00 | one-time |
| FCA Gateway 1-year (EU only) | $229.99 | 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 VoltApp free?

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

### Is TopGuru free?

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

### Do VoltApp or TopGuru have ads?

Neither VoltApp nor TopGuru shows ads.

### Which is updated more often, VoltApp or TopGuru?

VoltApp ships an update every 2 days, and TopGuru every 3 weeks. Most recently, VoltApp was updated on October 8, 2026 and TopGuru on October 14, 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.*