CloudLabs Solubility Constant vs Rapid Relay Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CloudLabs Solubility Constant
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This simulation recreates the environment of a chemistry laboratory in which there is a flask containing copper sulfate, a flask with sodium hydroxide, a flask with hydrochloric acid, a flask with ammonia, two test tubes, a rack, and three pipettors. The goal of the practice is to replicate the formation and dissolution of copper hydroxide scale formed in pipes. Determine the solubility constant of the scale and the amount of acid and ammonia that would be needed to dissolve the hydroxide formed.
Rapid Relay Calculator
This app helps VEX IQ Robotics Competition participants quickly and accurately calculate scores for the Rapid Relay game. It supports both Teamwork and Skills matches, offers interactive scoring, and allows for saving match data with sorting options. Features like dark mode and keyboard input enhance usability for teams, judges, and coaches.
- Teamwork and Skills match support
- Interactive scoring
- Score saving with sorting
- Practice match schedule generator
- Dark mode support
- Keyboard input option
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Calculate scores quickly and accurately for the VEX IQ Robotics Competition 2024 - 2025 game, Rapid Relay! Features: • Support for both Teamwork and Skills matches • Interactive switch toggles • Just tap the image to add one to the counter, allowing you to constantly have your eyes on the field • Score saving with date and game mode sorting • Dark mode support • Keyboard input option • Practice match schedule generator Perfect for: • Teams scoring practice or competition matches • Competition judges and scorekeepers • Coaches tracking team progress App made by Ansel Dong from VEX IQ team 52617X (Cheese Sandwich) from Cupertino, CA.
Screenshots
Verdict
The clearest difference is update cadence: Rapid Relay Calculator at every 4 weeks against CloudLabs Solubility Constant's every 28 months. CloudLabs Solubility Constant's advantage is iOS requirement (9.0 vs 17.6). On price, ads, in-app purchases and device support 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.
CloudLabs Solubility Constant ships an update every 28 months, Rapid Relay Calculator every 4 weeks. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.
| Parameter | CloudLabs Solubility Constant | Rapid Relay Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 28 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 72 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jiovany Orozco | Tao Dong |
In-app purchases
CloudLabs Solubility Constant
No in-app purchases
Rapid Relay Calculator
No in-app purchases
Questions
Is CloudLabs Solubility Constant free?
Is Rapid Relay Calculator free?
Do CloudLabs Solubility Constant or Rapid Relay Calculator have ads?
Which is updated more often, CloudLabs Solubility Constant or Rapid Relay Calculator?
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