# Battery Calculator vs LEDzFun

The clearest difference is review sentiment: LEDzFun at 100% against Battery Calculator's 0%. LEDzFun also leads on price (Free vs $2.99) and update cadence (every 3 weeks vs every 40 months). Battery Calculator's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

LEDzFun is free to download; Battery Calculator costs $2.99 up front. LEDzFun sells 3 in-app purchases, starting at $0.99 per month. Battery Calculator asks for nothing beyond the download.

Battery Calculator ships an update every 40 months, LEDzFun every 3 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Battery Calculator | LEDzFun |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ledzfun-led-bannerscroller/id6744998083/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 54 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [杰乐 胡](https://appshunter.io/developer/1810231520) |

## What reviewers say

### Battery Calculator

[App page](https://appshunter.io/ios/app/battery-calculator/id1229567971)

Calculate estimated battery run time based on capacity and device consumption. Determine battery capacity from stored energy and voltage, and calculate required battery ratings based on load and duration.

**Highlights:** Battery life calculator, Battery capacity calculator, Battery size calculator, Estimate run time, Calculate battery capacity in Wh, Calculate required battery rating in Ah

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

**In-app purchases:** none


### LEDzFun

[App page](https://appshunter.io/ios/app/ledzfun-led-bannerscroller/id6744998083)

Create dynamic LED banners, countdowns, and custom displays for any event. Personalize text, animations, and backgrounds with a user-friendly interface. Offers offline functionality and a rich template gallery for presentations, parties, and more.

**Highlights:** Customizable LED banner creation, Advanced countdown modes, Dynamic text and number animations, Rich background options, Flexible template system, Offline functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $3.99 | per year |
| Lifetime Membership | $4.99 | one-time |


## Frequently asked questions

### Is Battery Calculator free?

Battery Calculator costs $2.99, with no in-app purchases.

### Is LEDzFun free?

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

### Do Battery Calculator or LEDzFun have ads?

Neither Battery Calculator nor LEDzFun shows ads.

### Which is updated more often, Battery Calculator or LEDzFun?

Battery Calculator ships an update every 40 months, and LEDzFun every 3 weeks. Most recently, Battery Calculator was updated on October 24, 2026 and LEDzFun on October 16, 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.*