# NorthStar Battery App vs Twab

The clearest difference is in-app purchases: NorthStar Battery App at none against Twab's 3. NorthStar Battery App also leads on ads (none vs shown) and iOS requirement (8.0 vs 15). Twab's advantage is update cadence (every 5 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Twab sells 3 in-app purchases, starting at $2.99 per month. NorthStar Battery App asks for nothing beyond the download.

NorthStar Battery App ships an update every 3 months, Twab every 5 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | NorthStar Battery App | Twab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/northstar-battery-app/id571261700/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 33 MB | 20 MB |
| Requires iOS | **8.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ENERSYS SARL](https://appshunter.io/developer/1110848781) | [Dimitrios Chasapis](https://appshunter.io/developer/1561308640) |

## What reviewers say

### NorthStar Battery App

[App page](https://appshunter.io/ios/app/northstar-battery-app/id571261700)

Discover premium batteries and site solutions with this app. It helps you find the ideal product, compare performance, locate resellers, and access datasheets and videos. A built-in browser also lets you explore the company website.

**Highlights:** Product selection tools, Battery performance comparison, Reseller locator, Vehicle battery sizing, Datasheet downloads, Product videos, Built-in web browser

**Features:** macOS Compatibility

**In-app purchases:** none


### Twab

[App page](https://appshunter.io/ios/app/twab/id1561308638)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $2.99 | per month |
| Premium 3 months | $6.99 | per 3 months |
| Premium 12 months | $20.49 | per year |


## Frequently asked questions

### Is NorthStar Battery App free?

NorthStar Battery App is free to download, with no in-app purchases.

### Is Twab free?

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

### Do NorthStar Battery App or Twab have ads?

Twab shows ads; NorthStar Battery App does not.

### Which is updated more often, NorthStar Battery App or Twab?

NorthStar Battery App ships an update every 3 months, and Twab every 5 weeks. Most recently, NorthStar Battery App was updated on October 29, 2026 and Twab on October 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.*