# BatterySync vs LockBoard

The clearest difference is in-app purchases: LockBoard at none against BatterySync's 2. LockBoard also leads on update cadence (weekly vs every 2 months). BatterySync's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. BatterySync sells 2 in-app purchases, starting at $3.99 per month. LockBoard asks for nothing beyond the download.

BatterySync ships an update every 2 months, LockBoard weekly. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | BatterySync | LockBoard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 61 MB | 22 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Epsilon Labs, LLC.](https://appshunter.io/developer/1773895537) | [Tatsuya Hirano](https://appshunter.io/developer/1571057475) |

## What reviewers say

### BatterySync

[App page](https://appshunter.io/ios/app/batterysync/id6740754706)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BatterySync Premium Monthly | $3.99 | per month |
| BatterySync Premium Yearly | $39.99 | per year |


### LockBoard

[App page](https://appshunter.io/ios/app/lockboard-lock-screen-notes/id6794582104)

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

**In-app purchases:** none


## Frequently asked questions

### Is BatterySync free?

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

### Is LockBoard free?

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

### Do BatterySync or LockBoard have ads?

Neither BatterySync nor LockBoard shows ads.

### Which is updated more often, BatterySync or LockBoard?

BatterySync ships an update every 2 months, and LockBoard weekly. Most recently, BatterySync was updated on October 25, 2026 and LockBoard on October 18, 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.*