Comparison

TT Pre vs Derivative

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

Head to head
About

TT Pre

This educational app provides comprehensive pre-calculus lessons and practice problems. It features audiovisual lectures, automated grading, and step-by-step explanations to help students learn independently. Parental controls allow progress tracking, and the digitized textbook is searchable.

Highlights
  • 95 audiovisual lectures
  • Thousands of practice problems
  • Automated grading and instant feedback
  • Step-by-step audiovisual explanations
  • Parental progress tracking
  • Digitized textbook with search
Read full description

The Teaching Textbooks Pre-Calculus app makes your TT course even better! Not only will your student enjoy math while learning independently, but, with the app, that learning can also take place on the go. Even when offline! Specifically, the app can be used offline for up to 6 lessons at a time. That makes it perfect for homeschool parents who need their kids to stay productive while the family is out and about during the day. The app’s other features include… • 95 audiovisual lectures that teach every core concept in the standard 12th grade curriculum • thousands of problems that give students all the practice they need to master each concept • automated grading and instant feedback for every single problem • step-by-step audiovisual explanations to every single problem so students can see exactly what they did wrong when mistakes are made (This makes the program feel as if a tutor is at the student’s side!) • parental controls that let you track your student’s progress • the digitized version of the printed Teaching Textbooks Pre-Calculus textbook (with a search feature and a hyper-linked index) • no advertising or in-app purchase offers • Internet connectivity is required, but you can remain offline for up to 6 lessons.

About

Derivative

Features
Read full description

The DerivativeCalculus is a simple but elegant app to find the derivatives of complex multivariable functions. You can find the partial derivatives of a multivariate function and share it with others or save it locally. You can create a beautiful high quality partial derivative tree and share it with others or save it locally. Derivatives are shown in beautifully written mathematical expression It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. This app also has a Study page to help you learn important differentiation rules like, product rule, chain rule, quotient rule, ect. This app is perfect for students learning calculus. Sharpen you brain by using this app and learning about the calculus. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Screenshots

TT Pre4 screens
Derivative4 screens

Verdict

The call

The clearest difference is ads: TT Pre at none against Derivative's shown. TT Pre also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TT Pre ships an update every 2 months, Derivative monthly. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
TT Pre versus Derivative: the parameters behind the verdict, then further details
ParameterTT PreDerivative
PriceFreeFree
Rating3.6 (9 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings9 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size88 MB37 MB
Age rating4+4+
DeveloperTeaching Textbooks, Inc.Om Prakash Chapagain

In-app purchases

None

TT Pre

No in-app purchases

None

Derivative

No in-app purchases

Questions

Is TT Pre free?
TT Pre is free to download, with no in-app purchases.
Is Derivative free?
Derivative is free to download, with no in-app purchases.
Do TT Pre or Derivative have ads?
Derivative shows ads; TT Pre does not.
Which is updated more often, TT Pre or Derivative?
TT Pre ships an update every 2 months, and Derivative monthly. Most recently, TT Pre was updated on October 8, 2026 and Derivative on October 12, 2026.

Other comparisons