# Viper SmartStart vs 034SPI

The clearest difference is rating: Viper SmartStart at 4.6 against 034SPI's 4.2. Viper SmartStart also leads on ratings volume (8.1K vs 42) and review sentiment (62% vs 53%). 034SPI's advantage is monetization model (free vs free with in-app purchases) and update cadence (every 2 weeks vs every 3 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Viper SmartStart holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Viper SmartStart has 8.1K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 62% of Viper SmartStart's written reviews are positive against 53% of 034SPI's.

Viper SmartStart ships an update every 3 months, 034SPI every 2 weeks. The most recent releases landed on September 21, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Viper SmartStart | 034SPI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8.1K ratings)](https://appshunter.io/ios/app/viper-smartstart/id333400981/reviews)** | [4.2 (42 ratings)](https://appshunter.io/ios/app/034spi/id6468930588/reviews) |
| Number of ratings | **8.1K** | 42 |
| Positive reviews | **62.3% of reviews** | 52.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 179 MB | 124 MB |
| Requires iOS | 14.0 | **12.2** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Directed](https://appshunter.io/developer/329155615) | [034motorsport Industries, LLC](https://appshunter.io/developer/1699254218) |

## What reviewers say

### Viper SmartStart

[App page](https://appshunter.io/ios/app/viper-smartstart/id333400981)

Control your car remotely from your smartphone or smartwatch. Start, lock, unlock, and locate your vehicle from anywhere. Receive real-time status updates and safety notifications.

**Highlights:** Remote start, lock, and unlock, Vehicle location tracking, Real-time status updates, Safety notifications (speeding, geofencing), Trunk release, Apple Watch control, Roadside assistance

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Years of reliable use
- 🔒 Secure and dependable
- 👍 Convenient remote start and control
- 👍 Helpful in cold/hot weather
- 👍 Easy to use app

**What reviewers complain about**

- 🐛 Connectivity issues and unreliable performance
- 🐛 Frequent disconnects and errors
- 🐛 Buggy app with crashes and glitches
- 🔋 Battery drain on phone
- 🤔 Lacking key features like temperature monitoring

**Reported bugs**

- App crashing on map view
- Persistent login issues
- Vehicle status not updating correctly
- Geofencing not working as expected

**Requested features**

- Siri/Shortcuts integration
- Customizable dashboard and widgets
- Automatic start/stop based on temperature
- Improved notification system


### 034SPI

[App page](https://appshunter.io/ios/app/034spi/id6468930588)

This app allows users to flash their car's ECU/TCU, change fuel maps, and configure live data displays. It also provides diagnostic tools like reading and clearing DTC codes. Compatible with Dynamic+ ECU/TCU tunes and the Dynamic+ End User Flashing Dongle.

**Highlights:** Flash ECU/TCU tunes, Change fuel octane/transmission files, Configure live data displays, High-speed data logging, Read & clear DTC codes, Perform adaptations/recalibrations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Viper SmartStart free?

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

### Is 034SPI free?

034SPI is free to download, with no in-app purchases.

### Which has better reviews, Viper SmartStart or 034SPI?

Viper SmartStart is rated higher. Viper SmartStart averages 4.6 out of 5 from 8.1K ratings, while 034SPI averages 4.2 from 42 ratings.

### Do Viper SmartStart or 034SPI have ads?

Neither Viper SmartStart nor 034SPI shows ads.

### Which is updated more often, Viper SmartStart or 034SPI?

Viper SmartStart ships an update every 3 months, and 034SPI every 2 weeks. Most recently, Viper SmartStart was updated on September 21, 2026 and 034SPI on September 16, 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.*