Comparison

Illini Central CUSD 189 vs DrPhos' Stoichiometry

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Illini Central CUSD 189

Stay informed about school events, district updates, and cafeteria menus. Customize notifications for your student's organizations and easily access staff contact information. Never miss important announcements or deadlines with this comprehensive communication tool.

Highlights
  • Event calendar with sharing
  • Customizable notifications
  • Weekly cafeteria menus
  • District live feed updates
  • Staff and department directory
Read full description

Introducing the brand new app for Illini Central CUSD 189. NEVER MISS AN EVENT The event section shows a list of events throughout the district. Users can add an event to their calendar to share the event with friends and family with one tap. CUSTOMIZE NOTIFICATIONS Select your student's organization within the app and make sure you never miss a message. CAFETERIA MENUS Within the dining section, you'll find an easy to navigate, weekly menu, sorted by day and meal type. DISTRICT UPDATES In the Live Feed is where you'll find updates from the administration about what's going on in the district right now. Whether that's celebrating a student's success, or reminding you about an upcoming deadline. CONTACT STAFF & DEPARTMENTS Find relevant staff and department contacts under an easy-to-navigate directory.

About

DrPhos' Stoichiometry

This tool simplifies solving chemical reaction problems by allowing users to input balanced equations and identify known and unknown compounds. It instantly calculates moles and mass, assisting students with various stoichiometry challenges.

Highlights
  • Mole, mass, and volume conversions
  • Balanced chemical equation support
  • Compound selection
  • Limiting reactant detection
  • High school and college chemistry focus
Features
Read full description

Solve Stoichiometry Problems Fast The DrPhos Stoichiometry Tool makes solving chemical reaction problems simple. Enter a balanced equation, choose known and unknown compounds, and instantly calculate moles and mass. Designed for chemistry students, this tool walks you through the stoichiometric process with clean visuals and intelligent logic. Whether you’re solving basic mole ratios or limiting reactant problems, this app keeps your work fast, accurate, and focused. Features: • Supports mole, mass, and volume conversions • Works with balanced chemical equations • Select known and unknown compounds easily • Built-in limiting reactant detection • Ideal for high school and college chemistry Use this app on its own or unlock it within the full DrPhos GenChem Helper suite to streamline your chemistry toolkit.

Screenshots

Illini Central CUSD 1894 screens
DrPhos' Stoichiometry4 screens

Verdict

The call

The clearest difference is price: Illini Central CUSD 189 at Free against DrPhos' Stoichiometry's $0.99. Illini Central CUSD 189 also leads on in-app purchases (none vs 10) and ratings volume (6 vs 2). DrPhos' Stoichiometry's advantage is rating (5.0 vs 3.7) and update cadence (every 3 weeks vs every 3 months). On ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Illini Central CUSD 189 is free to download; DrPhos' Stoichiometry costs $0.99 up front. DrPhos' Stoichiometry sells 10 one-off in-app purchases. Illini Central CUSD 189 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DrPhos' Stoichiometry holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

UpkeepUpdate frequency

Illini Central CUSD 189 ships an update every 3 months, DrPhos' Stoichiometry every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard6 real differences · 4 level
Illini Central CUSD 189 versus DrPhos' Stoichiometry: the parameters behind the verdict, then further details
ParameterIllini Central CUSD 189DrPhos' Stoichiometry
PriceFree — better$0.99
Rating3.7 (6 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings6 — better2
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.2
Further details — not scored
Size145 MB15 MB
Age rating4+4+
DeveloperIllini Central CUSD189Monte L Helm

Customer experience

Illini Central CUSD 189

All ratings6 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DrPhos' Stoichiometry

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Illini Central CUSD 189

No in-app purchases

10 purchases

DrPhos' Stoichiometry

One-time10
  • Significant Figures Counter$0.99
  • Science Calculator$0.99
  • Quadratic Equation Solver$0.99
Show 7 more
  • Kinetics$0.99
  • General Chemistry Naming$0.99
  • Ionic Compound Builder$0.99
  • Solution Concentrations$0.99
  • Reaction Balancer$0.99
  • pH Calculator$0.99
  • Stoichiometry$0.99

Questions

Is Illini Central CUSD 189 free?
Illini Central CUSD 189 is free to download, with no in-app purchases.
Is DrPhos' Stoichiometry free?
DrPhos' Stoichiometry costs $0.99, and also offers in-app purchases.
Which has better reviews, Illini Central CUSD 189 or DrPhos' Stoichiometry?
DrPhos' Stoichiometry is rated higher. Illini Central CUSD 189 averages 3.7 out of 5 from 6 ratings, while DrPhos' Stoichiometry averages 5.0 from 2 ratings.
Do Illini Central CUSD 189 or DrPhos' Stoichiometry have ads?
Neither Illini Central CUSD 189 nor DrPhos' Stoichiometry shows ads.
Which is updated more often, Illini Central CUSD 189 or DrPhos' Stoichiometry?
Illini Central CUSD 189 ships an update every 3 months, and DrPhos' Stoichiometry every 3 weeks. Most recently, Illini Central CUSD 189 was updated on November 3, 2026 and DrPhos' Stoichiometry on November 4, 2026.

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