Comparison

FieldTripMe™ vs DrPhos' pH Calculator

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

Head to head
About

FieldTripMe™

This app enhances school field trips by providing teachers with student location tracking, navigation, and secure messaging. It also delivers learning points and activities, alerting educators to checkpoints and boundary crossings.

Highlights
  • Student location tracking
  • Trip navigation
  • Learning points and activities delivery
  • Checkpoint and boundary alerts
  • Secure teacher-student messaging
  • Trip planning via website
Features
Read full description

Strictly for the duration of any school excursion, the FieldTripMe™ app provides teachers with the option to track students’ locations, helps navigate all participants through the trip, delivers teachers' learning points and activities along the way, alerts teachers to checkpoints reached and boundaries crossed and provides a secure means of messaging – solely between teachers and students. During the planning phase, teachers use the FieldTripMe™ website to set-up and manage all aspects of a field trip, share information with their administrators and plan learning experiences for their students. For the duration of the trip, the app provides teachers with the option to track students’ locations, helps navigate all participants through the trip, delivers teachers' learning points and activities along the way, alerts teachers to checkpoints reached and boundaries crossed and provides a secure means of messaging – solely between teachers and students. Parents/guardians use the FieldTripMe™ website to register their students, learn about upcoming trips, complete permission forms and even make payment for all trip expenses. When an educator is able to extend their lesson beyond the bounds of a school, a higher level of cultural, historical, mathematical, linguistic and scientific enlightenment can begin. Such limitless learning immerses students in the real world and creates moments that evolve into passion and vocation. With both a school administrator and a Spanish teacher on our team, we share a clear educational philosophy: in order for students to grow into globally aware citizens, they must experience as much of life as possible while empowering themselves with the gift of knowledge. We believe that the most effective way to bring the world to students is to bring students into the world – and do so in the safest, most rewarding way possible. Guiding students outside of the classroom has always been a daunting challenge, but never more so than today. Despite having the most detail-driven plan, a field trip can still result in an unfulfilling venture or – in the worst case – an unsafe situation … we've all read the headlines. So to put our educational principles into practice, our educators teamed with a developer to help all involved in the field trip process – students, parents/guardians, teachers and administrators – achieve a better outcome. The result is FieldTripMe™. Students with smartphones use the FieldTripMe™ app during the defined hours of the trip to follow the planned route and know their teacher's or chaperone's locations. They have access to their teacher's supporting files, factoids and activities to make direct, in-the-moment connections between what they're living and what they're learning. At any time during the trip, a student can alert their teacher or chaperone to a potentially dangerous situation or request immediate assistance ... all through the FieldTripMe™ app (phone numbers are never exchanged) and only for the duration of the trip (contact concludes when the trip ends). We're happy to invite you to a safer, smarter, more organized way to field trip!

About

DrPhos' pH Calculator

This tool instantly calculates pH, pOH, and ion concentrations for strong and weak acids and bases. It supports molarity and scientific notation, ensuring accurate results for general chemistry problems.

Highlights
  • Calculate pH, pOH, [H⁺], or [OH⁻]
  • Handles strong and weak acids/bases
  • Supports Ka and Kb values
  • Built-in molarity and scientific notation
  • Automatic pH + pOH = 14
  • Clean, focused layout
Features
Read full description

Easily Calculate pH, pOH, [H⁺], and [OH⁻] The DrPhos pH Calculator is a fast, reliable tool for solving acid-base problems in general chemistry. It supports both strong and weak acids and bases—automatically solving equilibrium expressions using the appropriate Ka or Kb values. Whether you’re converting between pH and concentration, calculating [H⁺], or just checking your work, this app provides accurate, instant results. Features: • Calculate pH, pOH, [H⁺], or [OH⁻] from any one value • Handles strong and weak acids/bases with Ka or Kb • Built-in support for molarity and scientific notation • Maintains pH + pOH = 14 automatically • Clean, focused layout with visual feedback Need more chemistry tools? Unlock additional features within the app or explore the full DrPhos GenChem Helper, which includes: • Significant Figures Counter • Molar Mass Calculator • Ionic Compound Builder • General Chemistry Naming Tool • Equation Balancer • Stoichiometry Solver • Solution Concentration Calculator • Integrated Rate Law Calculator • Scientific Calculator • Quadratic Equation Solver Unlock individual tools for $0.99 each—or get everything in the full GenChem Helper for just $9.99.

Screenshots

FieldTripMe™4 screens
DrPhos' pH Calculator3 screens

Verdict

The call

The clearest difference is price: FieldTripMe™ at Free against DrPhos' pH Calculator's $0.99. FieldTripMe™ also leads on rating (5.0 vs 3.7) and in-app purchases (none vs 11). DrPhos' pH Calculator's advantage is update cadence (every 10 days vs every 4 months) and ratings volume (3 vs 1). On ads 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

CostPrice · In-app purchases · Ads · Monetization

FieldTripMe™ is free to download; DrPhos' pH Calculator costs $0.99 up front. DrPhos' pH Calculator sells 11 one-off in-app purchases. FieldTripMe™ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FieldTripMe™ holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

FieldTripMe™ ships an update every 4 months, DrPhos' pH Calculator every 10 days. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

Scorecard7 real differences · 2 level
FieldTripMe™ versus DrPhos' pH Calculator: the parameters behind the verdict, then further details
ParameterFieldTripMe™DrPhos' pH Calculator
PriceFree — better$0.99
Rating5.0 (1 ratings) — better3.7 (3 ratings)
Number of ratings13 — better
Update frequencyEvery 4 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.2
Further details — not scored
Size56 MB15 MB
Age rating4+4+
DeveloperRobert RichmanMonte L Helm

Customer experience

FieldTripMe™

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

DrPhos' pH Calculator

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

FieldTripMe™

No in-app purchases

11 purchases

DrPhos' pH Calculator

One-time11
  • Science Calculator$0.99
  • Quadratic Equation Solver$0.99
  • Significant Figures Calculator$0.99
Show 8 more
  • Molar Mass Calculator$0.99
  • Stoichiometry$0.99
  • pH Calculator$0.99
  • Ionic Compound Builder$0.99
  • General Chemistry Naming$0.99
  • Solution Concentrations$0.99
  • Reaction Balancer$0.99
  • Kinetics Calculator$0.99

Questions

Is FieldTripMe™ free?
FieldTripMe™ is free to download, with no in-app purchases.
Is DrPhos' pH Calculator free?
DrPhos' pH Calculator costs $0.99, and also offers in-app purchases.
Which has better reviews, FieldTripMe™ or DrPhos' pH Calculator?
FieldTripMe™ is rated higher. FieldTripMe™ averages 5.0 out of 5 from 1 ratings, while DrPhos' pH Calculator averages 3.7 from 3 ratings.
Do FieldTripMe™ or DrPhos' pH Calculator have ads?
Neither FieldTripMe™ nor DrPhos' pH Calculator shows ads.
Which is updated more often, FieldTripMe™ or DrPhos' pH Calculator?
FieldTripMe™ ships an update every 4 months, and DrPhos' pH Calculator every 10 days. Most recently, FieldTripMe™ was updated on October 3, 2026 and DrPhos' pH Calculator on October 6, 2026.

Other comparisons