# IDfier vs Optical flow Analysis

The clearest difference is in-app purchases: Optical flow Analysis at none against IDfier's 6. IDfier's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. IDfier sells 6 in-app purchases, starting at $2.99 per month. Optical flow Analysis asks for nothing beyond the download.

IDfier ships an update monthly, Optical flow Analysis fortnightly. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | IDfier | Optical flow Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/optical-flow-analysis/id6511216272/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | — | Ad-supported |
| Size | 210 MB | 38 MB |
| Requires iOS | **15.1** | 17.7.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SoLiDware AB](https://appshunter.io/developer/1686979757) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### IDfier

[App page](https://appshunter.io/ios/app/idfier/id6448929870)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IDfier Basic | $2.99 | per month |
| IDfier Pro | $9.99 | per month |
| Individual | $24.99 | per year |
| IDfier Pro | $84.99 | per year |
| One Time Verification | $1.49 | one-time |
| One+One Verification | $2.49 | one-time |


### Optical flow Analysis

[App page](https://appshunter.io/ios/app/optical-flow-analysis/id6511216272)

Analyze motion between video frames and visualize object movement. This utility helps understand visual dynamics in sequences of images.

**Highlights:** Optical flow analysis, Visualize object movement, Frame-to-frame comparison, Motion tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IDfier free?

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

### Is Optical flow Analysis free?

Optical flow Analysis is free to download, with no in-app purchases.

### Do IDfier or Optical flow Analysis have ads?

Optical flow Analysis shows ads; IDfier does not.

### Which is updated more often, IDfier or Optical flow Analysis?

IDfier ships an update monthly, and Optical flow Analysis fortnightly. Most recently, IDfier was updated on October 6, 2026 and Optical flow Analysis on October 21, 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.*