# SipherMail vs Kimpa

The clearest difference is in-app purchases: Kimpa at none against SipherMail's 6. SipherMail's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads, 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. Kimpa asks for nothing beyond the download.

SipherMail ships an update every 5 days, Kimpa every 2 weeks. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SipherMail | Kimpa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 57 MB | 47 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [THE TRISUN L.L.C-FZ](https://appshunter.io/developer/1879305779) | [Glemad](https://appshunter.io/developer/1786143804) |

## What reviewers say

### SipherMail

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

**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 |


### Kimpa

[App page](https://appshunter.io/ios/app/kimpa/id6777559818)

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

**In-app purchases:** none


## Frequently asked questions

### Is SipherMail free?

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

### Is Kimpa free?

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

### Do SipherMail or Kimpa have ads?

Neither SipherMail nor Kimpa shows ads.

### Which is updated more often, SipherMail or Kimpa?

SipherMail ships an update every 5 days, and Kimpa every 2 weeks. Most recently, SipherMail was updated on September 19, 2026 and Kimpa on September 8, 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.*