# Next Viewer vs Spec

The clearest difference is iOS requirement: Next Viewer at 9.0 against Spec's 13.0. 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.

Next Viewer ships an update every 11 months, Spec every 17 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Next Viewer | Spec |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 17 months |
| Size | 39 MB | 16 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iteris, Inc.](https://appshunter.io/developer/520177092) | [Spec-Rite Systems, LLC](https://appshunter.io/developer/1492185722) |

## What reviewers say

### Next Viewer

[App page](https://appshunter.io/ios/app/next-viewer/id859581501)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spec

[App page](https://appshunter.io/ios/app/spec-rite-mobile/id1608849982)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Next Viewer free?

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

### Is Spec free?

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

### Do Next Viewer or Spec have ads?

Neither Next Viewer nor Spec shows ads.

### Which is updated more often, Next Viewer or Spec?

Next Viewer ships an update every 11 months, and Spec every 17 months. Most recently, Next Viewer was updated on November 6, 2026 and Spec on November 7, 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.*