# PTI viewer vs Quad Decoder

The clearest difference is update cadence: Quad Decoder at every 2 months against PTI viewer's every 7 months. PTI viewer's advantage is device support (4 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

PTI viewer ships an update every 7 months, Quad Decoder every 2 months. The most recent releases landed on May 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PTI viewer | Quad Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quad-decoder/id1508958867/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 64 MB | 2 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Playback Technologies, Inc.](https://appshunter.io/developer/1462645155) | [株式会社テクノマセマティカル](https://appshunter.io/developer/1144335251) |

## What reviewers say

### PTI viewer

[App page](https://appshunter.io/ios/app/pti-viewer/id1487227584)

**In-app purchases:** none


### Quad Decoder

[App page](https://appshunter.io/ios/app/quad-decoder/id1508958867)

Stream video and audio from multiple low-delay IP encoders simultaneously. Connect to up to four encoders by setting their IP addresses and port numbers for real-time viewing.

**Highlights:** Stream video and audio, Connect to 4 encoders, Low delay streaming, Set IP address and port, Simultaneous connection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PTI viewer free?

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

### Is Quad Decoder free?

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

### Do PTI viewer or Quad Decoder have ads?

Neither PTI viewer nor Quad Decoder shows ads.

### Which is updated more often, PTI viewer or Quad Decoder?

PTI viewer ships an update every 7 months, and Quad Decoder every 2 months. Most recently, PTI viewer was updated on May 19, 2026 and Quad Decoder on September 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.*