# Flash Checklist vs Shadow Security

The clearest difference is in-app purchases: Flash Checklist at none against Shadow Security's 1. Shadow Security's advantage is update cadence (every 5 months vs every 24 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Shadow Security sells 1 in-app purchase, starting at $0.99 per month. Flash Checklist asks for nothing beyond the download.

Flash Checklist ships an update every 24 months, Shadow Security every 5 months. The most recent releases landed on September 19, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Flash Checklist | Shadow Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (9 ratings)](https://appshunter.io/ios/app/flash-checklist/id991595690/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 5 months** |
| Monetization | Paid | — |
| Size | 3 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [传毅 苏](https://appshunter.io/developer/849104720) | [Stephen Luadzers](https://appshunter.io/developer/1867049030) |

## What reviewers say

### Flash Checklist

[App page](https://appshunter.io/ios/app/flash-checklist/id991595690)

Easily create and print your checklists directly from your mobile device. This app focuses on the simple task of transforming your digital lists into printable formats.

**Highlights:** Create checklists, Print checklists, Mobile list creation, Printable formats

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

**In-app purchases:** none


### Shadow Security

[App page](https://appshunter.io/ios/app/shadow-security/id6759615832)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadow Security Monthly | $0.99 | per month |


## Frequently asked questions

### Is Flash Checklist free?

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

### Is Shadow Security free?

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

### Do Flash Checklist or Shadow Security have ads?

Neither Flash Checklist nor Shadow Security shows ads.

### Which is updated more often, Flash Checklist or Shadow Security?

Flash Checklist ships an update every 24 months, and Shadow Security every 5 months. Most recently, Flash Checklist was updated on September 19, 2026 and Shadow Security 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.*