# CradleViewer vs SPY Plus DVR

The clearest difference is update cadence: SPY Plus DVR at fortnightly against CradleViewer's every 4 months. SPY Plus DVR also leads on iOS requirement (6.0 vs 9.1). 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.

CradleViewer ships an update every 4 months, SPY Plus DVR fortnightly. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | CradleViewer | SPY Plus DVR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cradleviewer/id1207997595/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 20 MB | 37 MB |
| Requires iOS | 9.1 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Software Cradle Co., Ltd.](https://appshunter.io/developer/1207997594) | [hakan kasap](https://appshunter.io/developer/956905974) |

## What reviewers say

### CradleViewer

[App page](https://appshunter.io/ios/app/cradleviewer/id1207997595)

View simulation results from scSTREAM, SC/Tetra, scFLOW, and HeatDesigner. Manipulate modeled objects by rotating, moving, zooming, and toggling pre-set images or animations for detailed analysis.

**Highlights:** View simulation results, Rotate modeled objects, Move modeled objects, Zoom modeled objects, Toggle images/animation

**Features:** macOS Compatibility

**In-app purchases:** none


### SPY Plus DVR

[App page](https://appshunter.io/ios/app/spy-plus-dvr/id1215223473)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CradleViewer free?

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

### Is SPY Plus DVR free?

SPY Plus DVR is free to download, with no in-app purchases.

### Do CradleViewer or SPY Plus DVR have ads?

Neither CradleViewer nor SPY Plus DVR shows ads.

### Which is updated more often, CradleViewer or SPY Plus DVR?

CradleViewer ships an update every 4 months, and SPY Plus DVR fortnightly. Most recently, CradleViewer was updated on October 5, 2026 and SPY Plus DVR on October 2, 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.*