Comparison

Cengage Read vs DrPhos' Solution Calculator

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

Head to head
About

Cengage Read

Access and study your digital textbooks from anywhere. This app allows students to read, take notes, highlight, bookmark, and use text-to-speech for a flexible learning experience on the go.

Highlights
  • Read eTextbooks on the go
  • Take notes and highlight
  • Bookmark important sections
  • Text-to-speech functionality
  • Search keywords
  • Navigate via table of contents
Features
Read full description

Read your eTextbook and study on the go with the Cengage Read app. Cengage Read lets students study whenever – and wherever – they want. Take notes, highlight and bookmark info, have the text read out loud with text-to-speech and easily search keywords and jump to pages with the table of contents. Just log in with your Cengage username and password to get started.

About

DrPhos' Solution Calculator

Features
Read full description

Calculate Molarity and Dilution with Ease The DrPhos Solutions Calculator helps you quickly solve solution concentration problems using molarity, volume, and dilution formulas. Whether you’re mixing solutions, preparing for lab, or reviewing for exams, this tool makes chemistry calculations simple and accurate. Just enter the values you know—moles, volume, or molarity—and the app will solve for the unknown instantly. Great for high school, AP Chemistry, and college-level coursework. Features: • Calculates molarity, volume, or moles • Supports dilution problems using M₁V₁ = M₂V₂ • Clean interface with instant feedback • Designed for student use in labs and homework • Compatible with other DrPhos chemistry tools Unlock more tools in the DrPhos GenChem Helper suite, including: • Molar Mass Calculator • Reaction Balancer • Stoichiometry Solver • pH Calculator • Significant Figures Counter • Integrated Rate Law Calculator • Scientific Calculator • General Chemistry Naming Tool • Ionic Compound Builder • Quadratic Equation Solver Each tool is available for $0.99, or unlock them all for $9.99.

Screenshots

Cengage Read4 screens
DrPhos' Solution Calculator3 screens

Verdict

The call

The clearest difference is price: Cengage Read at Free against DrPhos' Solution Calculator's $0.99. Cengage Read also leads on in-app purchases (none vs 10). On update cadence, 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

Cengage Read is free to download; DrPhos' Solution Calculator costs $0.99 up front. DrPhos' Solution Calculator sells 10 one-off in-app purchases. Cengage Read asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Cengage Read versus DrPhos' Solution Calculator: the parameters behind the verdict, then further details
ParameterCengage ReadDrPhos' Solution Calculator
PriceFree — better$0.99
Rating4.2 (4.2K ratings) — better—
Positive reviews19.6% of reviews—
Number of ratings4.2K — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS1817.2 — better
Further details — not scored
Size37 MB15 MB
Age rating4+4+
DeveloperCengage LearningMonte L Helm

Bugs and requests

Cengage Read

Reported bugs

4 issues
  • Frequent crashes and sign-outs
  • Inconsistent highlighting and note-taking functionality
  • Inability to view full pages and content
  • Text-to-speech feature not working properly

Requested features

4 requests
  • Improve text formatting and layout
  • Add split-screen support for note-taking
  • Enhance accessibility features like text-to-speech
  • Integrate assignment and due date tracking

DrPhos' Solution Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Cengage Read

No in-app purchases

10 purchases

DrPhos' Solution Calculator

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

Questions

Is Cengage Read free?
Cengage Read is free to download, with no in-app purchases.
Is DrPhos' Solution Calculator free?
DrPhos' Solution Calculator costs $0.99, and also offers in-app purchases.
Do Cengage Read or DrPhos' Solution Calculator have ads?
Neither Cengage Read nor DrPhos' Solution Calculator shows ads.
Which is updated more often, Cengage Read or DrPhos' Solution Calculator?
Cengage Read ships an update every 2 months, and DrPhos' Solution Calculator every 2 months. Most recently, Cengage Read was updated on November 3, 2026 and DrPhos' Solution Calculator on October 25, 2026.

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