# Battery Calculator vs INVT Workshop

The clearest difference is price: INVT Workshop at Free against Battery Calculator's $2.99. INVT Workshop also leads on update cadence (every 3 weeks vs every 40 months) and iOS requirement (10.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

INVT Workshop is free to download; Battery Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Battery Calculator ships an update every 40 months, INVT Workshop every 3 weeks. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Battery Calculator | INVT Workshop |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 34 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [深圳市英威腾电气股份有限公司](https://appshunter.io/developer/1012943436) |

## 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


### INVT Workshop

[App page](https://appshunter.io/ios/app/invt-workshop/id1475223387)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Battery Calculator free?

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

### Is INVT Workshop free?

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

### Do Battery Calculator or INVT Workshop have ads?

Neither Battery Calculator nor INVT Workshop shows ads.

### Which is updated more often, Battery Calculator or INVT Workshop?

Battery Calculator ships an update every 40 months, and INVT Workshop every 3 weeks. Most recently, Battery Calculator was updated on October 8, 2026 and INVT Workshop on October 12, 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.*