# STW POWSTAR vs Zero Note

The clearest difference is in-app purchases: STW POWSTAR at none against Zero Note's 2. STW POWSTAR also leads on iOS requirement (15.6 vs 18.0). Zero Note's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Zero Note sells 2 one-off in-app purchases. STW POWSTAR asks for nothing beyond the download.

STW POWSTAR ships an update every 2 months, Zero Note every 3 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | STW POWSTAR | Zero Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zero-note-self-destruct-notes/id6760115126/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 59 MB | 13 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [Shenzhen Zhongxinli Electronic Technology Co., Ltd.](https://appshunter.io/developer/1486558750) | [Pradeep Burugu](https://appshunter.io/developer/1593852439) |

## What reviewers say

### STW POWSTAR

[App page](https://appshunter.io/ios/app/stw-powstar/id1546721700)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Zero Note

[App page](https://appshunter.io/ios/app/zero-note-self-destruct-notes/id6760115126)

Securely share encrypted notes that automatically disappear after being read or based on custom rules. Options include self-destruction by views or time, location-based access control, and email notifications upon opening. Access notes from any device via a keyboard extension.

**Highlights:** Self-destruct by views, Self-destruct by time, Location-based access control, Email notifications on opening, Keyboard extension access, Audit trail

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zero Note Lifetime Basic | $9.99 | one-time |
| Zero Note Lifetime Pro | $12.99 | one-time |


## Frequently asked questions

### Is STW POWSTAR free?

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

### Is Zero Note free?

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

### Do STW POWSTAR or Zero Note have ads?

Neither STW POWSTAR nor Zero Note shows ads.

### Which is updated more often, STW POWSTAR or Zero Note?

STW POWSTAR ships an update every 2 months, and Zero Note every 3 days. Most recently, STW POWSTAR was updated on November 11, 2026 and Zero Note on October 31, 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.*