# Lithos POS vs REDiFly SMS

Lithos POS and REDiFly SMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Lithos POS | REDiFly SMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 142 MB | 31 MB |
| Requires iOS | 16.0 | **15.7** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lithos Technosoft Pvt Ltd](https://appshunter.io/developer/1638707820) | [Integrated Aviation Systems AG](https://appshunter.io/developer/1449703353) |

## What reviewers say

### Lithos POS

[App page](https://appshunter.io/ios/app/lithos-pos/id1459618404)

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

**In-app purchases:** none


### REDiFly SMS

[App page](https://appshunter.io/ios/app/redifly-sms/id6476977726)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lithos POS free?

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

### Is REDiFly SMS free?

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

### Do Lithos POS or REDiFly SMS have ads?

Neither Lithos POS nor REDiFly SMS shows ads.

### Which is updated more often, Lithos POS or REDiFly SMS?

Lithos POS ships an update every 2 months, and REDiFly SMS every 2 months. Most recently, Lithos POS was updated on October 15, 2026 and REDiFly SMS on October 10, 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.*