# BLECarVoltage vs BATT SYNC

The clearest difference is iOS requirement: BLECarVoltage at 9.0 against BATT SYNC's 15.6. 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.

BLECarVoltage ships an update every 4 months, BATT SYNC every 6 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | BLECarVoltage | BATT SYNC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 55 MB | 34 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Longfellow Chen](https://appshunter.io/developer/1025308037) | [DHC Specialty Corp.](https://appshunter.io/developer/1130832649) |

## What reviewers say

### BLECarVoltage

[App page](https://appshunter.io/ios/app/blecarvoltage/id1269971537)

**Features:** macOS Compatibility

**In-app purchases:** none


### BATT SYNC

[App page](https://appshunter.io/ios/app/batt-sync/id1286964635)

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

**In-app purchases:** none


## Frequently asked questions

### Is BLECarVoltage free?

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

### Is BATT SYNC free?

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

### Do BLECarVoltage or BATT SYNC have ads?

Neither BLECarVoltage nor BATT SYNC shows ads.

### Which is updated more often, BLECarVoltage or BATT SYNC?

BLECarVoltage ships an update every 4 months, and BATT SYNC every 6 months. Most recently, BLECarVoltage was updated on October 10, 2026 and BATT SYNC on October 8, 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.*