# Vai vs Seja B2

The clearest difference is update cadence: Seja B2 at every 9 days against Vai's every 4 weeks. Vai's advantage is iOS requirement (11.0 vs 15.0). 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.

Vai ships an update every 4 weeks, Seja B2 every 9 days. The most recent releases landed on September 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Vai | Seja B2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/vai/id1367231269/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 51 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FJ Comercio de Eletronicos Distribuicao e Importacao LTDA](https://appshunter.io/developer/1263481145) | [E-PLUG IN TECNOLOGIA LTDA](https://appshunter.io/developer/1748806256) |

## What reviewers say

### Vai

[App page](https://appshunter.io/ios/app/vai/id1367231269)

Connect your vehicle to the digital world with real-time tracking, fault alerts, and detailed trip information. This app provides diagnostics for your car's battery and maintenance reminders, transforming your vehicle into a smart, connected device.

**Highlights:** Real-time vehicle location tracking, Vehicle fault and system alerts, Battery health diagnostics, Preventive maintenance and recall notifications, Detailed trip history and analysis, OBD device integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Seja B2

[App page](https://appshunter.io/ios/app/seja-b2/id1506169857)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vai free?

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

### Is Seja B2 free?

Seja B2 is free to download, with no in-app purchases.

### Do Vai or Seja B2 have ads?

Neither Vai nor Seja B2 shows ads.

### Which is updated more often, Vai or Seja B2?

Vai ships an update every 4 weeks, and Seja B2 every 9 days. Most recently, Vai was updated on September 17, 2026 and Seja B2 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.*