# SMS vs Maritime Converter Pro

The clearest difference is in-app purchases: SMS at none against Maritime Converter Pro's 1. SMS also leads on iOS requirement (11.0 vs 17.0). Maritime Converter Pro's advantage is update cadence (every 6 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Maritime Converter Pro sells 1 one-off in-app purchase. SMS asks for nothing beyond the download.

SMS ships an update every 4 months, Maritime Converter Pro every 6 weeks. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SMS | Maritime Converter Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 25 MB | 3 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PJSC Rostelecom](https://appshunter.io/developer/428474472) | [Dmitriy Motorin](https://appshunter.io/developer/1495533596) |

## What reviewers say

### SMS

[App page](https://appshunter.io/ios/app/sms/id1542594216)

This app intelligently filters unwanted SMS messages using an advanced algorithm, eliminating the need for manual blocking. It allows users to manage sender lists, view blocked messages, and ensure important information isn't missed.

**Highlights:** Intelligent spam blocking algorithm, Automatic blocking of unwanted SMS, Manage sender white and blacklists, View blocked SMS messages, Sender name list viewing

**Features:** macOS Compatibility

**In-app purchases:** none


### Maritime Converter Pro

[App page](https://appshunter.io/ios/app/maritime-converter-pro/id6799078520)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is SMS free?

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

### Is Maritime Converter Pro free?

Maritime Converter Pro is free to download, with in-app purchases available.

### Do SMS or Maritime Converter Pro have ads?

Neither SMS nor Maritime Converter Pro shows ads.

### Which is updated more often, SMS or Maritime Converter Pro?

SMS ships an update every 4 months, and Maritime Converter Pro every 6 weeks. Most recently, SMS was updated on October 21, 2026 and Maritime Converter Pro on October 15, 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.*