# LSPIV vs Multitape Turing Machine

The clearest difference is iOS requirement: LSPIV at 11.0 against Multitape Turing Machine's 16.0. 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 Multitape Turing Machine. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

LSPIV ships an update every 13 months, Multitape Turing Machine every 8 months. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | LSPIV | Multitape Turing Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lspiv/id981387743/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/multitape-turing-machine/id6443568065/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 8 months** |
| Monetization | Free | Free |
| Size | 71 MB | 2 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) | [Denis Mandych](https://appshunter.io/developer/1647227152) |

## 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


### Multitape Turing Machine

[App page](https://appshunter.io/ios/app/multitape-turing-machine/id6443568065)

This app simulates a mathematical model of computation, allowing users to explore how abstract machines manipulate symbols on a tape according to defined rules. It's a tool for understanding the fundamental principles of computer algorithms.

**Highlights:** Turing machine simulation, Symbol manipulation on tape, Abstract computation model, Algorithm understanding, State and head movement

**In-app purchases:** none


## Frequently asked questions

### Is LSPIV free?

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

### Is Multitape Turing Machine free?

Multitape Turing Machine is free to download, with no in-app purchases.

### Which has better reviews, LSPIV or Multitape Turing Machine?

LSPIV and Multitape Turing Machine are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do LSPIV or Multitape Turing Machine have ads?

Neither LSPIV nor Multitape Turing Machine shows ads.

### Which is updated more often, LSPIV or Multitape Turing Machine?

LSPIV ships an update every 13 months, and Multitape Turing Machine every 8 months. Most recently, LSPIV was updated on October 5, 2026 and Multitape Turing Machine on October 10, 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.*