# МТС Optimus vs KLASTA

The clearest difference is review sentiment: МТС Optimus at 84% against KLASTA's 40%. МТС Optimus also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

МТС Optimus ships an update fortnightly, KLASTA every 2 weeks. The most recent releases landed on October 19, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | МТС Optimus | KLASTA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **83.9% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 273 MB | 127 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [MWS LLC](https://appshunter.io/developer/1555264081) | [Mobile TeleSystems Public Joint Stock Company](https://appshunter.io/developer/406999351) |

## What reviewers say

### МТС Optimus

[App page](https://appshunter.io/ios/app/optimus/id6471238816)

This app records mobile calls, transcribes them into text, and provides AI-generated summaries. It helps users manage business conversations, track agreements, and organize client interactions. A web version offers additional CRM functionalities for enhanced productivity.

**Highlights:** Mobile call recording, Speech-to-text transcription, AI-powered call summaries, Keyword search of conversations, Mini-CRM in web version, Separate business contacts

**Features:** macOS Compatibility

**In-app purchases:** none


### KLASTA

[App page](https://appshunter.io/ios/app/klasta/id6758207829)

This app acts as a digital shield for privacy and security. It offers control over incoming calls, intelligent SMS filtering using AI, website ad and tracker blocking, and monitors for data leaks. It also provides a secure connection for accessing content.

**Highlights:** Incoming call control, AI-powered SMS filtering, Website ad and tracker blocking, Data leak monitoring, Secure connection, Contact group management

**In-app purchases:** none


## Frequently asked questions

### Is МТС Optimus free?

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

### Is KLASTA free?

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

### Do МТС Optimus or KLASTA have ads?

Neither МТС Optimus nor KLASTA shows ads.

### Which is updated more often, МТС Optimus or KLASTA?

МТС Optimus ships an update fortnightly, and KLASTA every 2 weeks. Most recently, МТС Optimus was updated on October 19, 2026 and KLASTA on September 30, 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.*