# NUSO vs DTS Red

The clearest difference is update cadence: NUSO at every 2 months against DTS Red's every 7 months. DTS Red's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

NUSO ships an update every 2 months, DTS Red every 7 months. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | NUSO | DTS Red |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (13 ratings)](https://appshunter.io/ios/app/nuso/id1609666809/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Free | — |
| Size | 123 MB | 463 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Brightlink Communications LLC](https://appshunter.io/developer/1447894835) | [DTS Technology Group LLC](https://appshunter.io/developer/1472316483) |

## What reviewers say

### NUSO

[App page](https://appshunter.io/ios/app/nuso/id1609666809)

This business communication app offers a cloud-based phone system with contact center features. It allows users to make and receive office calls on their mobile devices, use their business number for outgoing calls, and manage answering rules remotely. Access your office contact list with real-time presence and enjoy features like visual voicemail and call history.

**Highlights:** Mobile office calls, Business number caller ID, Remote answering rules, In-office contact list, Visual voicemail, Call history, Custom greetings

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


### DTS Red

[App page](https://appshunter.io/ios/app/dts-red/id6476820688)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is NUSO free?

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

### Is DTS Red free?

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

### Do NUSO or DTS Red have ads?

Neither NUSO nor DTS Red shows ads.

### Which is updated more often, NUSO or DTS Red?

NUSO ships an update every 2 months, and DTS Red every 7 months. Most recently, NUSO was updated on September 27, 2026 and DTS Red on September 22, 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.*