PhoneIoT vs Mermaid Maths
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhoneIoT
This app connects to a block-based programming environment, enabling remote access to your device's sensors and display. Students can create interactive projects, like using their device as a remote control for robots.
- Connects to NetsBlox educational programming environment
- Remotely access iOS device sensors
- Control device display from code
- Create engaging programming projects
- Enable device as robot remote control
Read full descriptionHide full description
PhoneIoT allows you to connect to NetsBlox (https://editor.netsblox.org/?), a block-based educational programming environment, and remotely access your iOS device's sensors and display from code. Along with some of the other distributed computing services available through NetsBlox, this allows students to create highly engaging projects, such as turning your iOS device into an accelerometer-enabled remote control driving a virtual or physical robot rolling around on the ground (via the pre-existing RoboScape service on NetsBlox).
Mermaid Maths
This educational game helps children practice addition skills in a fun, underwater environment. Players earn treasure by solving math problems, which can then be used to customize their underwater world with new friends and backgrounds.
- Addition practice
- Earn treasure rewards
- Customize underwater scenes
- Unlock new friends
- Multiple backgrounds
- Interactive gameplay
Read full descriptionHide full description
Mermaid Maths allows kids to practice addition while earning treasure they can use to swim with different friends under the sea! The maths exercise is at the top of the game scene, once you know the answer tap the bubble that contains it and the mermaid will swim to it. If you get it correct you gain 1 treasure. An incorrect answer will lose one treasure. Use treasure to change to one of eight different backgrounds, choose between 2 mermaids and also add up to 6 different friends to your maths practice!
Screenshots
Verdict
The clearest difference is update cadence: PhoneIoT at every 2 weeks against Mermaid Maths's every 58 months. PhoneIoT also leads on ratings volume (4 vs 1) and iOS requirement (13.0 vs 15.6). On price, rating, 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
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 PhoneIoT against 5.0 for Mermaid Maths. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
PhoneIoT ships an update every 2 weeks, Mermaid Maths every 58 months. Both last shipped on November 3, 2026.
| Parameter | PhoneIoT | Mermaid Maths |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 2 weeks — better | Every 58 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 22 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Devin Jean | L&L Programming LLC |
Customer experience
PhoneIoT
Mermaid Maths
In-app purchases
PhoneIoT
No in-app purchases
Mermaid Maths
No in-app purchases
Questions
Is PhoneIoT free?
Is Mermaid Maths free?
Which has better reviews, PhoneIoT or Mermaid Maths?
Do PhoneIoT or Mermaid Maths have ads?
Which is updated more often, PhoneIoT or Mermaid Maths?
Other comparisons
