# Zen Battery vs PSCalendarApp

The clearest difference is in-app purchases: PSCalendarApp at none against Zen Battery's 3. PSCalendarApp also leads on update cadence (daily vs every 18 months). Zen Battery's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Zen Battery sells 3 in-app purchases, starting at $1.99 per month. PSCalendarApp asks for nothing beyond the download.

Zen Battery ships an update every 18 months, PSCalendarApp daily. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Zen Battery | PSCalendarApp |
| --- | --- | --- |
| 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 | 89.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Daily** |
| Monetization | Subscription | — |
| Size | 117 MB | 5 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shinobit LLC](https://appshunter.io/developer/1680633187) | [pilsun jang](https://appshunter.io/developer/1889778139) |

## 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


### PSCalendarApp

[App page](https://appshunter.io/ios/app/pscalendarapp/id6775716903)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zen Battery free?

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

### Is PSCalendarApp free?

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

### Do Zen Battery or PSCalendarApp have ads?

PSCalendarApp shows ads; Zen Battery does not.

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

Zen Battery ships an update every 18 months, and PSCalendarApp daily. Most recently, Zen Battery was updated on October 23, 2026 and PSCalendarApp on October 24, 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.*