# Battery Calculator vs View Selection Source

The clearest difference is price: View Selection Source at $0.99 against Battery Calculator's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Battery Calculator costs $2.99 and View Selection Source $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Battery Calculator ships an update every 40 months, View Selection Source every 42 months. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Battery Calculator | View Selection Source |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 40 months** | Every 42 months |
| Monetization | Paid | — |
| Size | 1 MB | 76 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Huong Nguyen](https://appshunter.io/developer/1342162705) |

## 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


### View Selection Source

[App page](https://appshunter.io/ios/app/view-selection-source/id1382143618)

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

**In-app purchases:** none


## Frequently asked questions

### Is Battery Calculator free?

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

### Is View Selection Source free?

View Selection Source costs $0.99, with no in-app purchases.

### Do Battery Calculator or View Selection Source have ads?

Neither Battery Calculator nor View Selection Source shows ads.

### Which is updated more often, Battery Calculator or View Selection Source?

Battery Calculator ships an update every 40 months, and View Selection Source every 42 months. Most recently, Battery Calculator was updated on October 8, 2026 and View Selection Source on September 30, 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.*