LSPIV vs Led Programmer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LSPIV
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.
- Large-scale particle image velocimetry
- Water surface velocity measurement
- Non-intrusive velocimetry
- Smartphone implementation
- Instant ortho-rectification
- No GCPs required
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LSPIV (large-scale particle image velocimetry) is an image-based method for measuring velocity distribution on the water surface. Applications of LSPIV have been increasing for both field and laboratory experiments as unique and powerful tools for non-intrusive velocimetry using conventional imaging devices and specialized image processing software. This app utilizes a smartphone to implement LSPIV. By innovatively combining the sensors embedded in smartphones, the images captured with them can be intrinsically and instantly ortho-rectified without making recourse to GCPs. The app was developed under support by the River Fund in charge of the Foundation of River and Watershed Environment Management (FOREM), Japan; Grant-in-Aid for Young Scientists (B); and the Research Fund of Japan Institute of Country-ology and Engineering.
Led Programmer
This app teaches children basic computer programming concepts and how LED screens function. It offers a puzzle mode to develop coordinate skills and numerical reasoning through interactive challenges.
- Basic computer programming concepts
- LED screen functionality
- Screen coordinates
- File creation, saving, and deletion
- Puzzle mode with 20 levels
- Coordinate skill development
- Use of numbers, colors, letters, and math
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With Programming Led Screen app kids can now understand and learn basic concepts about; Basic computer programming, How led screens works, Screen Coordinates, Creating, saving deleting files Programming a Led Screen With i, Programmer : Led Screen puzzle mode kids can solve 20 Level of basic puzzles and will develop; Coordinate skill, Using numbers, colours, letters and math all together it's a full functional led screen programming tool that can give idea about what it means to be a programmer. We encourage parades to participate and play with their children.
Screenshots
Verdict
The clearest difference is price: LSPIV at Free against Led Programmer's $0.99. Led Programmer's advantage is update cadence (every 3 weeks vs every 13 months) and iOS requirement (8.0 vs 11.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
LSPIV is free to download; Led Programmer costs $0.99 up front. 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 Led Programmer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
LSPIV ships an update every 13 months, Led Programmer every 3 weeks. The most recent releases landed on June 24, 2026 and September 19, 2026 respectively.
| Parameter | LSPIV | Led Programmer |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 13 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 71 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryota Tsubaki | Erkan SIRIN |
Customer experience
LSPIV
Led Programmer
In-app purchases
LSPIV
No in-app purchases
Led Programmer
No in-app purchases
Questions
Is LSPIV free?
Is Led Programmer free?
Which has better reviews, LSPIV or Led Programmer?
Do LSPIV or Led Programmer have ads?
Which is updated more often, LSPIV or Led Programmer?
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