# LSPIV vs SmartPIV

The clearest difference is iOS requirement: LSPIV at 11.0 against SmartPIV's 13.0. On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for LSPIV against 5.0 for SmartPIV. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

LSPIV ships an update every 13 months, SmartPIV every 7 months. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | LSPIV | SmartPIV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lspiv/id981387743/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/smartpiv/id1471308387/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 7 months** |
| Monetization | Free | Free |
| Size | 71 MB | 35 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryota Tsubaki](https://appshunter.io/developer/981387742) | [Patrick Maeder](https://appshunter.io/developer/1122594621) |

## What reviewers say

### LSPIV

[App page](https://appshunter.io/ios/app/lspiv/id981387743)

This application enables large-scale particle image velocimetry (LSPIV) using a smartphone. It offers a non-intrusive method for measuring water surface velocity distribution in both field and lab settings. The app provides instant ortho-rectification of captured images without needing ground control points.

**Highlights:** Large-scale particle image velocimetry, Water surface velocity measurement, Non-intrusive velocimetry, Smartphone implementation, Instant ortho-rectification, No GCPs required

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartPIV

[App page](https://appshunter.io/ios/app/smartpiv/id1471308387)

This application allows users to determine flow velocity in a PIV setup, replacing traditional camera and analysis software. It visually displays current analysis results through velocity vectors for easy understanding of flow development. Designed to be simple, mobile, and convenient, it offers a low-cost and intuitive alternative for hands-on training.

**Highlights:** Determine flow velocity in PIV setups, Visualize flow with velocity vectors, Replaces traditional camera and analysis software, Low-cost and intuitive application, Mobile and convenient for hands-on training

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LSPIV free?

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

### Is SmartPIV free?

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

### Which has better reviews, LSPIV or SmartPIV?

LSPIV and SmartPIV are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do LSPIV or SmartPIV have ads?

Neither LSPIV nor SmartPIV shows ads.

### Which is updated more often, LSPIV or SmartPIV?

LSPIV ships an update every 13 months, and SmartPIV every 7 months. Most recently, LSPIV was updated on October 5, 2026 and SmartPIV on October 17, 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.*