# BatterySync vs TreeNotes

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

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

BatterySync ships an update every 2 months, TreeNotes fortnightly. The most recent releases landed on September 29, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | BatterySync | TreeNotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 61 MB | 35 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Epsilon Labs, LLC.](https://appshunter.io/developer/1773895537) | [Seiya.k](https://appshunter.io/developer/383021944) |

## 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 |


### TreeNotes

[App page](https://appshunter.io/ios/app/treenotes-tree-outliner/id6754949841)

**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 TreeNotes free?

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

### Do BatterySync or TreeNotes have ads?

TreeNotes shows ads; BatterySync does not.

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

BatterySync ships an update every 2 months, and TreeNotes fortnightly. Most recently, BatterySync was updated on September 29, 2026 and TreeNotes on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*