# SBT1 SchuLink vs ProBox.vn

The clearest difference is update cadence: ProBox.vn at every 3 months against SBT1 SchuLink's every 12 months. SBT1 SchuLink's advantage is iOS requirement (12.0 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.

SBT1 SchuLink ships an update every 12 months, ProBox.vn every 3 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | SBT1 SchuLink | ProBox.vn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/sbt1-schulink/id1098059054/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 33 MB | 15 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SCHUMACHER ELECTRIC CORPORATION](https://appshunter.io/developer/983625395) | [Lam Hoang Anh](https://appshunter.io/developer/1221785830) |

## What reviewers say

### SBT1 SchuLink

[App page](https://appshunter.io/ios/app/sbt1-schulink/id1098059054)

This app wirelessly connects a Bluetooth battery tester to your smartphone or tablet. It allows you to perform various battery and system tests, view battery status, and store up to 2,000 test records. Test results can be easily emailed or texted.

**Highlights:** Perform Battery/System Test, EV Battery Test, Email/text test records, Bluetooth pairing, Store 2,000+ test records, Interactive Home Menu

**Features:** macOS Compatibility

**In-app purchases:** none


### ProBox.vn

[App page](https://appshunter.io/ios/app/proboxvn/id1565916654)

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

**In-app purchases:** none


## Frequently asked questions

### Is SBT1 SchuLink free?

SBT1 SchuLink is free to download, with no in-app purchases.

### Is ProBox.vn free?

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

### Do SBT1 SchuLink or ProBox.vn have ads?

Neither SBT1 SchuLink nor ProBox.vn shows ads.

### Which is updated more often, SBT1 SchuLink or ProBox.vn?

SBT1 SchuLink ships an update every 12 months, and ProBox.vn every 3 months. Most recently, SBT1 SchuLink was updated on November 2, 2026 and ProBox.vn on November 11, 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.*