# PowerVision 4 vs SimplyAuth

The clearest difference is update cadence: PowerVision 4 at monthly against SimplyAuth's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PowerVision 4 sells 8 one-off in-app purchases and SimplyAuth sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

PowerVision 4 ships an update monthly, SimplyAuth every 3 months. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PowerVision 4 | SimplyAuth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (312 ratings)](https://appshunter.io/ios/app/powervision-4/id1559102553/reviews)** | — |
| Number of ratings | **312** | — |
| Positive reviews | 77.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 104 MB | 57 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dynojet](https://appshunter.io/developer/686107623) | [SimplyAuth LLC](https://appshunter.io/developer/1889629727) |

## 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


### SimplyAuth

[App page](https://appshunter.io/ios/app/simplyauth/id6761439612)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personal | $0.99 | per month |
| Personal | $7.99 | per year |


## Frequently asked questions

### Is PowerVision 4 free?

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

### Is SimplyAuth free?

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

### Do PowerVision 4 or SimplyAuth have ads?

Neither PowerVision 4 nor SimplyAuth shows ads.

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

PowerVision 4 ships an update monthly, and SimplyAuth every 3 months. Most recently, PowerVision 4 was updated on October 25, 2026 and SimplyAuth 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.*