# eTIGER_S3b vs Vigorplus TPMS

The clearest difference is iOS requirement: eTIGER_S3b at 7.1 against Vigorplus TPMS's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

eTIGER_S3b ships an update every 10 months, Vigorplus TPMS every 9 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | eTIGER_S3b | Vigorplus TPMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Size | 2 MB | 39 MB |
| Requires iOS | **7.1** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MaxApp](https://appshunter.io/developer/932747360) | [JET Opto](https://appshunter.io/developer/956415819) |

## What reviewers say

### eTIGER_S3b

[App page](https://appshunter.io/ios/app/etiger-s3b/id933141861)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vigorplus TPMS

[App page](https://appshunter.io/ios/app/vigorplus-tpms/id6466265085)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is eTIGER_S3b free?

eTIGER_S3b is free to download, with no in-app purchases.

### Is Vigorplus TPMS free?

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

### Do eTIGER_S3b or Vigorplus TPMS have ads?

Neither eTIGER_S3b nor Vigorplus TPMS shows ads.

### Which is updated more often, eTIGER_S3b or Vigorplus TPMS?

eTIGER_S3b ships an update every 10 months, and Vigorplus TPMS every 9 months. Most recently, eTIGER_S3b was updated on October 6, 2026 and Vigorplus TPMS on October 1, 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.*