# OptMsg vs Kazzle

The clearest difference is in-app purchases: OptMsg at none against Kazzle's 8. OptMsg also leads on iOS requirement (15.0 vs 17.0). Kazzle's advantage is update cadence (every 2 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Kazzle sells 8 in-app purchases, starting at $28.99 per month. OptMsg asks for nothing beyond the download.

OptMsg ships an update monthly, Kazzle every 2 days. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OptMsg | Kazzle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/optmsg/id6742815057/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | — |
| Size | 61 MB | 133 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [OptMsg, LLC](https://appshunter.io/developer/1800141573) | [Kazzle](https://appshunter.io/developer/1862083498) |

## What reviewers say

### 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


### Kazzle

[App page](https://appshunter.io/ios/app/kazzle-ai-builder/id6756647387)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic (20 credits/mo) | $28.99 | per month |
| Pro (50 credits/mo) | $71.99 | per month |
| Ultra (100 credits/mo) | $142.99 | per month |
| 1,000 credits | $14.99 | one-time |
| 2,000 credits | $28.99 | one-time |
| 5,000 credits | $71.99 | one-time |
| 10,000 credits | $142.99 | one-time |
| 20,000 credits | $289.00 | one-time |


## Frequently asked questions

### Is OptMsg free?

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

### Is Kazzle free?

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

### Do OptMsg or Kazzle have ads?

Neither OptMsg nor Kazzle shows ads.

### Which is updated more often, OptMsg or Kazzle?

OptMsg ships an update monthly, and Kazzle every 2 days. Most recently, OptMsg was updated on October 4, 2026 and Kazzle on October 3, 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.*