# NAC vs Blackout Math.Power Calculator

The clearest difference is update cadence: Blackout Math.Power Calculator at every 6 days against NAC's fortnightly. NAC's advantage is iOS requirement (13.0 vs 18). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NAC sells 1 in-app purchase, starting at $199.00 per year and Blackout Math.Power Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NAC ships an update fortnightly, Blackout Math.Power Calculator every 6 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | NAC | Blackout Math.Power Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (5 ratings)](https://appshunter.io/ios/app/blackout-mathpower-calculator/id6755345214/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | — | Free |
| Size | 3 MB | 10 MB |
| Requires iOS | **13.0** | 18 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Neubert Aero Corp](https://appshunter.io/developer/1785752651) | [Yevheniia Borunova](https://appshunter.io/developer/1684316852) |

## What reviewers say

### NAC

[App page](https://appshunter.io/ios/app/nac-dfd-decelerometer/id6478895830)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U.S. Region | $199.00 | per year |


### Blackout Math.Power Calculator

[App page](https://appshunter.io/ios/app/blackout-mathpower-calculator/id6755345214)

This app helps you accurately calculate power outage durations and battery performance. It factors in real-world conditions like battery discharge, inverter efficiency, and device consumption to provide realistic estimates for runtime and charging.

**Highlights:** Calculate usable battery energy (Wh/kWh), Factor in safe depth of discharge, Account for inverter efficiency and losses, Calculate real device energy consumption, Estimate actual device runtime, Provide accurate battery charging time estimates, Explain complex energy concepts clearly

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $2.99 | one-time |


## Frequently asked questions

### Is NAC free?

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

### Is Blackout Math.Power Calculator free?

Blackout Math.Power Calculator is free to download, with in-app purchases available.

### Do NAC or Blackout Math.Power Calculator have ads?

Neither NAC nor Blackout Math.Power Calculator shows ads.

### Which is updated more often, NAC or Blackout Math.Power Calculator?

NAC ships an update fortnightly, and Blackout Math.Power Calculator every 6 days. Most recently, NAC was updated on October 18, 2026 and Blackout Math.Power Calculator on October 14, 2026.

---

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