# WVS Data Collection App vs Idea Rewind

The clearest difference is in-app purchases: WVS Data Collection App at none against Idea Rewind's 3. WVS Data Collection App also leads on iOS requirement (12.0 vs 16.4). Idea Rewind's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Idea Rewind sells 3 in-app purchases, starting at $0.99 per month. WVS Data Collection App asks for nothing beyond the download.

WVS Data Collection App ships an update every 3 weeks, Idea Rewind every 3 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | WVS Data Collection App | Idea Rewind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 45 MB | 100 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mission Rabies Ltd](https://appshunter.io/developer/984491450) | [逸飞 闫](https://appshunter.io/developer/6804338112) |

## What reviewers say

### WVS Data Collection App

[App page](https://appshunter.io/ios/app/wvs-data-collection-app/id1048355034)

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

**In-app purchases:** none


### Idea Rewind

[App page](https://appshunter.io/ios/app/idea-rewind-notes-and-recall/id6806823786)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Idea Rewind Pro Monthly | $0.99 | per month |
| Idea Rewind Pro Yearly | $4.99 | per year |
| Idea Rewind Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is WVS Data Collection App free?

WVS Data Collection App is free to download, with no in-app purchases.

### Is Idea Rewind free?

Idea Rewind is free to download, with in-app purchases available.

### Do WVS Data Collection App or Idea Rewind have ads?

Neither WVS Data Collection App nor Idea Rewind shows ads.

### Which is updated more often, WVS Data Collection App or Idea Rewind?

WVS Data Collection App ships an update every 3 weeks, and Idea Rewind every 3 days. Most recently, WVS Data Collection App was updated on November 2, 2026 and Idea Rewind on October 31, 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.*