# KnowScam Mobile vs OptMsg

The clearest difference is update cadence: KnowScam Mobile at every 2 weeks against OptMsg's monthly. OptMsg's advantage is iOS requirement (15.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for KnowScam Mobile against 5.0 for OptMsg. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

KnowScam Mobile ships an update every 2 weeks, OptMsg monthly. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | KnowScam Mobile | OptMsg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (13 ratings)](https://appshunter.io/ios/app/knowscam-mobile/id6479377617/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/optmsg/id6742815057/reviews) |
| Number of ratings | **13** | 5 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 96 MB | 61 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Scamnetic, Inc.](https://appshunter.io/developer/1735813314) | [OptMsg, LLC](https://appshunter.io/developer/1800141573) |

## What reviewers say

### KnowScam Mobile

[App page](https://appshunter.io/ios/app/knowscam-mobile/id6479377617)

This app uses AI to detect and prevent scams by scanning various communication channels and verifying identities. It offers expert guidance and educational resources to keep users safe from online threats.

**Highlights:** AI-powered scam detection, Scan emails, messages, and web addresses, Verify online identities, Access to scam intervention experts, Scam education resources, Real-time threat prevention

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

**In-app purchases:** none


### OptMsg

[App page](https://appshunter.io/ios/app/optmsg/id6742815057)

This email app offers unparalleled privacy and security with 100% inbox control. Only approved senders can reach you, and all messages are fully encrypted. Enjoy a distraction-free, password-free experience with no ads or data tracking.

**Highlights:** 100% inbox control with approved senders, Password-free authentication via Passkeys, End-to-end encryption for secure messaging, No ads, no tracking, no data mining, Auto-delete trash after 30 days, Community recommendations for new senders

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

**In-app purchases:** none


## Frequently asked questions

### Is KnowScam Mobile free?

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

### Is OptMsg free?

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

### Which has better reviews, KnowScam Mobile or OptMsg?

KnowScam Mobile and OptMsg are both rated 5.0 out of 5 on the App Store, from 13 and 5 ratings respectively.

### Do KnowScam Mobile or OptMsg have ads?

Neither KnowScam Mobile nor OptMsg shows ads.

### Which is updated more often, KnowScam Mobile or OptMsg?

KnowScam Mobile ships an update every 2 weeks, and OptMsg monthly. Most recently, KnowScam Mobile was updated on September 24, 2026 and OptMsg on October 4, 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.*