# Zen Battery vs 3

The clearest difference is update cadence: 3 at every 6 weeks against Zen Battery's every 18 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Zen Battery sells 3 in-app purchases, starting at $1.99 per month and 3 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Zen Battery ships an update every 18 months, 3 every 6 weeks. The most recent releases landed on September 25, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Zen Battery | 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (8.1K ratings)](https://appshunter.io/ios/app/zen-battery/id466431322/reviews)** | — |
| Number of ratings | **8.1K** | — |
| Positive reviews | 89.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 weeks** |
| Monetization | Subscription | — |
| Size | 117 MB | 11 MB |
| Requires iOS | 17.6 | **17.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shinobit LLC](https://appshunter.io/developer/1680633187) | [Minje Kim](https://appshunter.io/developer/1889530864) |

## What reviewers say

### Zen Battery

[App page](https://appshunter.io/ios/app/zen-battery/id466431322)

This app provides detailed battery information for your iPhone and iPad, including remaining hours for various activities. Customize the visual display with fluid animations and color options. Receive alerts when your device is fully charged.

**Highlights:** Battery life estimation for music, video, calls, and internet, Customizable 'Zen' display modes, Interactive fluid battery animation, Adjustable liquid color and battery design, Full charge warning sound, Widgets for quick battery status

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Lifetime | $19.99 | one-time |

**What reviewers like**

- 👍 Reliable battery monitoring
- 🚀 Accurate battery percentage display
- 💡 Customizable battery color
- 👍 Simple and easy to use
- 👍 Large, clear battery visualization

**What reviewers complain about**

- 🔋 High battery consumption
- 🐛 Inconsistent battery percentage accuracy
- 🔋 Drains device battery quickly
- 🔒 Subscription-based model

**Reported bugs**

- App freezes or crashes
- Ads break app functionality

**Requested features**

- 12-hour clock option
- Battery saver mode
- Widget support
- Ability to disable ads


### 3

[App page](https://appshunter.io/ios/app/3-tap-memo-sticky-notes/id6761423321)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Samsepan Pro | $0.99 | one-time |


## Frequently asked questions

### Is Zen Battery free?

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

### Is 3 free?

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

### Do Zen Battery or 3 have ads?

Neither Zen Battery nor 3 shows ads.

### Which is updated more often, Zen Battery or 3?

Zen Battery ships an update every 18 months, and 3 every 6 weeks. Most recently, Zen Battery was updated on September 25, 2026 and 3 on September 5, 2026.

---

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