# LSPIV vs Make Chirps

The clearest difference is update cadence: Make Chirps at every 3 months against LSPIV's every 13 months. LSPIV's advantage is iOS requirement (11.0 vs 16.0). 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.

LSPIV ships an update every 13 months, Make Chirps every 3 months. The most recent releases landed on October 22, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | LSPIV | Make Chirps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lspiv/id981387743/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 71 MB | 30 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ryota Tsubaki](https://appshunter.io/developer/981387742) | [John Keith Riles](https://appshunter.io/developer/1746793092) |

## 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


### Make Chirps

[App page](https://appshunter.io/ios/app/make-chirps/id6466780242)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LSPIV free?

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

### Is Make Chirps free?

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

### Do LSPIV or Make Chirps have ads?

Neither LSPIV nor Make Chirps shows ads.

### Which is updated more often, LSPIV or Make Chirps?

LSPIV ships an update every 13 months, and Make Chirps every 3 months. Most recently, LSPIV was updated on October 22, 2026 and Make Chirps on September 11, 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.*