Comparison

RiosTutoring vs DrPhos' Molar Mass

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

Head to head
About

RiosTutoring

This platform connects students with experienced educators for personalized learning support. It offers guidance, resources, and one-to-one or small group instruction to help students build confidence and succeed academically. The process begins with understanding individual learning needs and developing a tailored plan.

Highlights
  • Personalized learning plans
  • One-to-one tutoring
  • Small group instruction
  • Homework assistance
  • Test preparation
  • Academic progress feedback
Features
Read full description

We are a group of professional experienced educators who decided to offer our skills, knowledge and resources to help students thrive in their educational endeavors. Our mission is to provide educational tools and resources that empower students to learn effectively while fostering a deeper understanding and appreciation of what they are taught. Please feel free to review their qualifications and experience. We encourage you to communicate with them to see how they can best assist your child. Or if you prefer, we can guide you through this. You can reach us at 305-316-1590 or by email at support@riostutoring.com. We strongly believe that when students are prepared, they will feel confident and capable. As a result, they will be successful on their education journey. We provide guidance, support and educational resources to assist students with their educational needs. How does the journey begin? We will have a meeting to get to know your child and to identify ways which will best fit his learning needs. Subsequently, a first class will be scheduled in order for us to lay out a plan which will guide us on the next steps to be taken based on the results of different assessments. During this journey, we will provide continuous feedback of your child's academic progress. We usually teach in a one-to-one setting, but we could provide small group instruction as well. Depending on the student's specific needs, our teachers will set aside time to provide homework assistance, test prep or to review specific areas or topics of concern, taking the time to effectively explain concepts and practice them in multiple ways. We Believe Every Student Can Be Successful Provided There Is Effort and Dedication!

About

DrPhos' Molar Mass

Instantly calculate the molar mass of any chemical formula, supporting complex structures with subscripts and parentheses. It also provides an elemental breakdown by mass and percentage, aiding in problem-solving and learning.

Highlights
  • Calculates molar mass from chemical formulas
  • Supports parentheses and polyatomic ions
  • Automatic subscript formatting
  • Elemental breakdown by mass and percentage
  • Valuable for high school and college chemistry
Features
Read full description

Calculate Molar Mass and Elemental Composition Instantly The DrPhos Molar Mass Calculator is a fast, reliable tool for calculating the molar mass of any chemical formula. Whether you’re working with simple compounds or complex polyatomic ions, the app handles subscripts, parentheses, and nested groups with ease. In addition to total molar mass, the app performs elemental analysis, showing the contribution of each element to the total mass—making it a valuable tool for both problem-solving and learning. Features: • Calculates molar mass from chemical formulas • Supports parentheses and polyatomic ions • Automatic subscript formatting and validation • Elemental breakdown by mass and percentage • Great for high school, AP Chemistry, and college-level courses Unlock even more tools in the DrPhos GenChem Helper suite, including: • Reaction Balancer • Significant Figures Counter • Ionic Compound Builder • General Chemistry Naming Tool • Stoichiometry Solver • pH Calculator • Integrated Rate Law Calculator • Solution Concentration Calculator • Scientific Calculator • Quadratic Equation Solver Each tool is available individually for $0.99, or unlock them all with the full GenChem Helper for $9.99.

Screenshots

RiosTutoring4 screens
DrPhos' Molar Mass4 screens

Verdict

The call

The clearest difference is price: RiosTutoring at Free against DrPhos' Molar Mass's $0.99. RiosTutoring also leads on in-app purchases (none vs 10). DrPhos' Molar Mass's advantage is update cadence (every 6 days vs every 3 weeks). On rating, review sentiment, ratings volume and ads 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

RiosTutoring is free to download; DrPhos' Molar Mass costs $0.99 up front. DrPhos' Molar Mass sells 10 one-off in-app purchases. RiosTutoring asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for RiosTutoring against 5.0 for DrPhos' Molar Mass. Both are backed by a comparable volume of ratings — 11 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

RiosTutoring ships an update every 3 weeks, DrPhos' Molar Mass every 6 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
RiosTutoring versus DrPhos' Molar Mass: the parameters behind the verdict, then further details
ParameterRiosTutoringDrPhos' Molar Mass
PriceFree — better$0.99
Rating4.9 (11 ratings)5.0 (9 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11 — better9
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationAd-supported — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size80 MB15 MB
Age rating17+4+
DeveloperRios Tutoring LLCMonte L Helm

Customer experience

RiosTutoring

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DrPhos' Molar Mass

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RiosTutoring

No in-app purchases

10 purchases

DrPhos' Molar Mass

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

Questions

Is RiosTutoring free?
RiosTutoring is free to download, with no in-app purchases.
Is DrPhos' Molar Mass free?
DrPhos' Molar Mass costs $0.99, and also offers in-app purchases.
Which has better reviews, RiosTutoring or DrPhos' Molar Mass?
DrPhos' Molar Mass is rated higher. RiosTutoring averages 4.9 out of 5 from 11 ratings, while DrPhos' Molar Mass averages 5.0 from 9 ratings.
Do RiosTutoring or DrPhos' Molar Mass have ads?
Neither RiosTutoring nor DrPhos' Molar Mass shows ads.
Which is updated more often, RiosTutoring or DrPhos' Molar Mass?
RiosTutoring ships an update every 3 weeks, and DrPhos' Molar Mass every 6 days. Most recently, RiosTutoring was updated on November 3, 2026 and DrPhos' Molar Mass on November 4, 2026.

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