# TypeSave vs Blackout Math.Power Calculator

The clearest difference is in-app purchases: TypeSave at none against Blackout Math.Power Calculator's 1. Blackout Math.Power Calculator's advantage is update cadence (weekly vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Blackout Math.Power Calculator sells 1 one-off in-app purchase. TypeSave asks for nothing beyond the download.

TypeSave ships an update every 4 weeks, Blackout Math.Power Calculator weekly. The most recent releases landed on October 19, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TypeSave | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 2 MB | 10 MB |
| Requires iOS | **17.6** | 18 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cyber Optimal LLC](https://appshunter.io/developer/1702102838) | [Yevheniia Borunova](https://appshunter.io/developer/1684316852) |

## What reviewers say

### TypeSave

[App page](https://appshunter.io/ios/app/typesave/id6754899082)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 power longevity and charging times.

**Highlights:** Calculate usable battery energy (Wh/kWh), Factor in safe battery discharge limits, Account for inverter efficiency and losses, Estimate device energy consumption, Determine actual power runtime, Provide realistic 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 | $7.99 | one-time |


## Frequently asked questions

### Is TypeSave free?

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

### Is Blackout Math.Power Calculator free?

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

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

Neither TypeSave nor Blackout Math.Power Calculator shows ads.

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

TypeSave ships an update every 4 weeks, and Blackout Math.Power Calculator weekly. Most recently, TypeSave was updated on October 19, 2026 and Blackout Math.Power Calculator on November 7, 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.*