LSPIV vs DoodleConnect
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.
DoodleConnect
Monitor your child's educational development across multiple learning applications. Stay informed about their achievements, progress through the curriculum, and receive real-time updates on their learning journey.
- Instant progress notifications
- View latest achievements
- Track stars earned
- Follow curriculum progress
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Track your child's progress across all four Doodle apps with DoodleConnect! With the help of DoodleConnect, you can get involved with your child's learning journey like never before. ▶ Key features • Receive instant notifications about their progress • View their latest achievements and see how many stars they've earned • Follow their progress through the curriculum DoodleConnect is free for all Doodle users, whether you have a home or school subscription.
Screenshots
Verdict
The clearest difference is update cadence: DoodleConnect at every 2 months against LSPIV's every 13 months. DoodleConnect also leads on ratings volume (56 vs 1). LSPIV's advantage is rating (5.0 vs 4.7) and iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LSPIV holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DoodleConnect has 56 ratings behind it against 1, so its average is the more settled of the two.
LSPIV ships an update every 13 months, DoodleConnect every 2 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | LSPIV | DoodleConnect |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (56 ratings) |
| Positive reviews | — | 56.0% of reviews |
| Number of ratings | 1 | 56 — better |
| Update frequency | Every 13 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 71 MB | 37 MB |
| Age rating | 4+ | 17+ |
| Developer | Ryota Tsubaki | Discovery Education Inc. |
Customer experience
LSPIV
DoodleConnect
Bugs and requests
LSPIV
Not enough reviews yet to summarise bugs or requests.
DoodleConnect
Reported bugs
33 issues- Losing streak
- No synching between apps on different devices
- Not synching with Doodle Connect app
- Latest update ruined the app
- Can't understand children's results anymore
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- Lots of annoying little glitches
- Doesn't work on most devices
- App keeps switching off
- Update is not working
- Can't see message and screen freeze on tapping message icon
- Can't go back to view another sibling's account
- Lack accuracy
- Difficult to collate the information needed
- App won't work
- Doesn't really work
- Can only see one or none of children's progress
- Says child is on 0 day streak when they are not
- Too many glitches in system
- Doesn't record all points when signing in across different devices
- Parent app no longer works
- Last version defective
- Parent dashboard cannot log on
- Misleading info, doesn't relate to child's DM app
- Doodle Stars on DM different to parent area and parent app
- Cannot delete and reinstall because info is stored in the cloud
- Delay between parent app and DoodleMaths app
- Today's or yesterday's stars not showing in metrics
- Missing lots of data
- No longer works since update
- Latest version crap, glitchy
- Have to enter credentials regularly
- Live View never shows anything
- App is full of fundamental design flaws
Requested features
35 requests- Bring back old version
- More comprehensive initial test
- More challenging levels
- Option to add extra material for all students
- Better graphing options
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- See everything that is on the website within the app
- Add more data feed options
- Improve user experience
- Improve design
- Option to create graphs of all students
- Option to select metrics for graphing
- Improve Live View functionality
- Real-time syncing between apps and devices
- Fix streak issues
- Fix synching issues with Doodle Connect
- Allow multiple accounts under one login
- Make app more engaging after all questions are done
- Improve accuracy of reports
- Simplify setup process
- Offer combined order discounts
- Improve customer service responsiveness and helpfulness
- Fix login issues
- Improve accuracy of streaks and progress tracking
- Improve message viewing and replying
- Allow switching between sibling accounts easily
- Make app more user-friendly
- Bring back old app features
- Make app more interactive
- Improve data visualization
- Add dark mode
- Improve reporting accuracy
- Fix app freezing issues
- Improve parent app functionality
- Make app more intuitive
- Improve accuracy of Doodle Age
In-app purchases
LSPIV
No in-app purchases
DoodleConnect
No in-app purchases
Questions
Is LSPIV free?
Is DoodleConnect free?
Which has better reviews, LSPIV or DoodleConnect?
Do LSPIV or DoodleConnect have ads?
Which is updated more often, LSPIV or DoodleConnect?
Other comparisons
