# SipherMail vs SimpleMail by WK

The clearest difference is in-app purchases: SimpleMail by WK at none against SipherMail's 6. SipherMail's advantage is ads (none vs shown) and update cadence (every 5 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SipherMail sells 6 in-app purchases, starting at $9.99 per month. SimpleMail by WK asks for nothing beyond the download.

SipherMail ships an update every 5 days, SimpleMail by WK fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SipherMail | SimpleMail by WK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/siphermail/id6759529180/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 73 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [THE TRISUN L.L.C-FZ](https://appshunter.io/developer/1879305779) | [Wonkyoung Seo](https://appshunter.io/developer/6775065699) |

## What reviewers say

### SipherMail

[App page](https://appshunter.io/ios/app/siphermail/id6759529180)

This secure email platform offers end-to-end encryption and AI-powered features like rewriting and summaries. It provides a modern, organized inbox experience with privacy controls and business account options.

**Highlights:** End-to-end encryption, AI email rewriting and summaries, Smart inbox organization, Remote image blocking, Business accounts, Multi-account support

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SipherMail Pro | $9.99 | per month |
| SipherMail Pro Yearly | $99.99 | per year |
| AI Credits – 100 | $5.99 | one-time |
| AI Credits – 500 | $19.99 | one-time |
| AI Credits – 2000 | $59.99 | one-time |
| AI Credits – 10000 | $249.99 | one-time |


### SimpleMail by WK

[App page](https://appshunter.io/ios/app/simplemail-by-wk/id6783971542)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SipherMail free?

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

### Is SimpleMail by WK free?

SimpleMail by WK is free to download, with no in-app purchases.

### Do SipherMail or SimpleMail by WK have ads?

SimpleMail by WK shows ads; SipherMail does not.

### Which is updated more often, SipherMail or SimpleMail by WK?

SipherMail ships an update every 5 days, and SimpleMail by WK fortnightly. Most recently, SipherMail was updated on October 28, 2026 and SimpleMail by WK 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.*