# PowerVision 4 vs V

The clearest difference is review sentiment: PowerVision 4 at 78% against V's 0%. PowerVision 4 also leads on rating (4.9 vs 4.0) and ratings volume (312 vs 2). V's advantage is update cadence (weekly vs monthly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PowerVision 4 sells 8 one-off in-app purchases and V sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

PowerVision 4 holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: PowerVision 4 has 312 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of PowerVision 4's written reviews are positive against 0% of V's.

PowerVision 4 ships an update monthly, V weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PowerVision 4 | V |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (312 ratings)](https://appshunter.io/ios/app/powervision-4/id1559102553/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/v-twin-diagnostics/id6774809735/reviews) |
| Number of ratings | **312** | 2 |
| Positive reviews | **77.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 104 MB | 63 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dynojet](https://appshunter.io/developer/686107623) | [Matthew Griffin](https://appshunter.io/developer/1896149286) |

## What reviewers say

### PowerVision 4

[App page](https://appshunter.io/ios/app/powervision-4/id1559102553)

Control your motorcycle's engine performance directly from your iPhone. Access hundreds of pre-loaded engine tunes or create custom ones. Easily flash tunes to your bike's ECU, monitor real-time engine data, and manage diagnostic trouble codes.

**Highlights:** Flash tunes to ECU, Access vast tune database, Record real-time engine data, Read/clear diagnostic codes, Remote tuning optimization, Autotune modes, Active tests for diagnostics

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Universal Token | $10.00 | one-time |
| Universal Token (3x) | $30.00 | one-time |
| Universal Token (5x) | $50.00 | one-time |
| Universal Token (10x) | $100.00 | one-time |
| Universal Token (15x) | $150.00 | one-time |
| Universal Token (20x) | $200.00 | one-time |
| Universal Token (25x) | $250.00 | one-time |
| Universal Token (30x) | $300.00 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Intuitive app interface
- 🚀 Fast tuning process
- 👍 Excellent customer support
- 🚀 Responsive bike performance

**What reviewers complain about**

- 🐛 App crashes and connectivity issues
- 🔍 Limited tune options
- 🔍 Lacking advanced tuning features
- 🐛 Inaccurate sensor readings
- 🔍 Clunky gauge operation

**Reported bugs**

- App crashes when using diagnostic functions
- Bluetooth disconnects during tuning process
- Sensor readings not updating correctly
- Tune flashing fails intermittently

**Requested features**

- Add more pre-loaded tune options
- Implement an auto-tune feature
- Improve data logging and cloud integration
- Expand support for wider range of bikes
- Enhance live sensor data display


### V

[App page](https://appshunter.io/ios/app/v-twin-diagnostics/id6774809735)

Troubleshoot your Harley EFI motorcycle with symptom-based diagnostics and service reminders. Access DTC codes, torque specs, and bike-specific information without hardware. Offers a premium subscription for guided troubleshooting and detailed diagrams.

**Highlights:** Symptom-based diagnostic Q&A, DTC trouble code lookup, Torque specs and service intervals, Smart Service Scheduler, Circuit diagrams, Component identification cards

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| V-Twin Premium | $9.99 | per month |


## Frequently asked questions

### Is PowerVision 4 free?

PowerVision 4 is free to download, with in-app purchases available.

### Is V free?

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

### Which has better reviews, PowerVision 4 or V?

PowerVision 4 is rated higher. PowerVision 4 averages 4.9 out of 5 from 312 ratings, while V averages 4.0 from 2 ratings.

### Do PowerVision 4 or V have ads?

Neither PowerVision 4 nor V shows ads.

### Which is updated more often, PowerVision 4 or V?

PowerVision 4 ships an update monthly, and V weekly. Most recently, PowerVision 4 was updated on November 7, 2026 and V on October 31, 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.*