# theSHFT vs CallSec

The clearest difference is in-app purchases: CallSec at none against theSHFT's 3. CallSec also leads on update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. theSHFT sells 3 in-app purchases, starting at $9.99 per month. CallSec asks for nothing beyond the download.

theSHFT ships an update every 5 days, CallSec every 2 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | theSHFT | CallSec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/theshft-encrypted-messaging/id6757427488/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 133 MB | 93 MB |
| Requires iOS | 16.1 | **15.5** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [theSHFT LLC](https://appshunter.io/developer/1819238938) | [Joze Hocevar](https://appshunter.io/developer/1889588154) |

## What reviewers say

### theSHFT

[App page](https://appshunter.io/ios/app/theshft-encrypted-messaging/id6757427488)

This app offers a secure and private messaging experience disguised as a functional calculator. Messages are end-to-end encrypted and self-destruct after reading, with no data stored on servers. It prioritizes user privacy with advanced encryption protocols.

**Highlights:** Calculator disguise, End-to-end encryption, Self-destructing messages, No server storage, Advanced encryption protocols, No phone number required

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| theSHFT Pro Monthly | $9.99 | per month |
| theSHFT Pro Yearly | $109.99 | per year |
| theSHFT Pro Lifetime | $49.99 | one-time |


### CallSec

[App page](https://appshunter.io/ios/app/callsec/id6761431358)

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

**In-app purchases:** none


## Frequently asked questions

### Is theSHFT free?

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

### Is CallSec free?

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

### Do theSHFT or CallSec have ads?

Neither theSHFT nor CallSec shows ads.

### Which is updated more often, theSHFT or CallSec?

theSHFT ships an update every 5 days, and CallSec every 2 days. Most recently, theSHFT was updated on October 8, 2026 and CallSec on October 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.*