Comparison

TenseBuilder vs Teachley Subtractimals

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

Head to head
About

TenseBuilder

This app uses animated videos to teach students how to identify and use correct past, present, and future verb tenses. It includes interactive exercises and a recording feature to help improve language skills.

Highlights
  • Animated video lessons
  • Demonstrates past, present, future tense
  • Focus on irregular past tense verbs
  • Interactive sentence completion
  • Voice recording for practice
  • Drag and drop sentence building
Features
Read full description

Own as an individual app or as part of our MES Speech Therapy Bundle. Winner - 2012 2nd Best Educational App by Let's Talk SLP Winner - 2012 Best Teaching App by TeachHub.com Winner - 2012 Best Education App by TeachersWithApps.com TenseBuilder is designed to help students learn how to identify and use correct tense forms by playing movie quality animated videos to demonstrate past, present and future tense. 48 video lessons (will expand to 58) are in place to help give students a deeper understanding about the purpose of tense. Special attention is paid to the past tense of irregular verbs. Students will learn how to sequence events and how to differentiate between events that will happen, events that are happening now and events that have already happened. Students will also identify correct written verb forms and drag them to complete sentences. Students have the opportunity to record their sentences in their own voice to improve their receptive and expressive language skills and promote carryover of these target verb forms to their conversational speech. Tense Builder offers a unique environment for improving a student's ability to understand tenses and use verb forms properly. FEATURES -48 target verbs with matching animated movies -Movies employ humor to engage student -Video modeling for each verb and tense form used -Each verb has separate animated lesson to show past, present and future tense -Option to focus on a particular tense -Ability to address past tense developmentally, by first teaching regular past -ed forms and then moving to irregular past. -Includes receptive task, where student taps the correct image to match a sentence, and an expressive task where student drags the correct verb form to complete the sentence -Intuitive drag and drop to create sentences -Words are spoken as they are being dragged for emerging readers -Record feature allows students to record sentences in their own voice -Save and email recorded sentences LANGUAGES - English REQUIREMENTS - Compatible with iPad - Requires iPad 5.0 software update TenseBuilder is part of "The Builder Series" of award winning education apps. Mobile Education Store has won over 40 app awards and has been named educational developer of the year in 2011 and 2012. Mobile Education Tools is a member of Moms with Apps, a collaborative group of family-friendly developers seeking to promote quality apps for kids and families. Recommended Ages: 3-6, 6-10 Categories: Special Needs, Education

About

Teachley Subtractimals

This educational game helps children master subtraction strategies through engaging gameplay. Developed by former teachers, it focuses on conceptual understanding and fact fluency for students in kindergarten through 5th grade.

Highlights
  • Teaches subtraction strategies
  • Focuses on conceptual understanding
  • Engaging game-based learning
  • Supports K-5 grade levels
  • Meets state learning standards
  • Developed by former teachers
Features
Read full description

Subtractimals is the eagerly awaited follow-up to Addimal Adventure, a 2014 Apple Design Award winning app. This app teaches children important strategies for solving subtraction problems. What are people saying? "Teachley's new app, Subtractimals is the perfect follow on to Addimal Adventure! This new subtraction app encourages the same deep mathematical thinking and grows with each student while guiding them in the process of subtraction." - Mauri Dufour, Kindergarten teacher and Apple Distinguished Educator "Subtractimals builds on Addimal Adventure by providing kids with important strategies for learning subtraction. Our students love playing Teachley's apps and have greatly enhanced their addition and multiplication skills. We cannot wait to start using Subtractimals too!" - Cathy W., K-4 Instructional Technology Coordinator About the game: The sinister Professor Possum makes his return in Subtractimals. In this app, kids use subtraction strategies to help Patooey and her cousin, Slurp thwart his latest evil plan. Developed by former teachers and experts in children’s cognition and learning, Subtractimals is an engaging game that teaches single-digit subtraction. During the tool round, children practice using important math strategies while the speed round encourages memorization but provides hints when needed. Most fluency apps focus on drill with digital worksheets and flashcards. In contrast, Subtractimals teaches effective math strategies and scaffolds learning to promote conceptual understanding and fact fluency. The app is also great for parents who want to support their children’s learning at home. Recommended Grades: K-2, 3-5 (intervention) Meets Many Common Core, TEKS, and other state standards. About Teachley: Founded by former teachers, Teachley uses cognitive science research to create apps that teach effective learning strategies and assess what kids know within engaging games. Our team includes experts in cognition and learning, Grammy and Emmy-award winning creative talent as well as new and noteworthy game designers. www.teachley.com *This app was made possible by the Federal Department of Education, with funding provided by the Institute of Education Sciences’ SBIR program.

Screenshots

Teachley Subtractimals4 screens

Verdict

The call

The clearest difference is rating: Teachley Subtractimals at 5.0 against TenseBuilder's 4.0. Teachley Subtractimals also leads on price ($4.99 vs $9.99) and device support (3 vs 1). TenseBuilder's advantage is review sentiment (85% vs 60%) and update cadence (every 6 months vs every 14 months). On ratings volume, ads, in-app purchases and monetization model 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

TenseBuilder costs $9.99 and Teachley Subtractimals $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Teachley Subtractimals holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews complicate that: 85% of TenseBuilder's written reviews are positive against 60% of Teachley Subtractimals's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

TenseBuilder ships an update every 6 months, Teachley Subtractimals every 14 months. Both last shipped on November 1, 2026.

Scorecard6 real differences · 4 level
TenseBuilder versus Teachley Subtractimals: the parameters behind the verdict, then further details
ParameterTenseBuilderTeachley Subtractimals
Price$9.99$4.99 — better
Rating4.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews85.0% of reviews — better60.0% of reviews
Number of ratings23 — better
Update frequencyEvery 6 months — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS10.0 — better15.0
Further details — not scored
Size466 MB112 MB
Age rating4+4+
DeveloperMobile Education Store LLCTeachley

Customer experience

TenseBuilder

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews20 reviews
Positive85.0%
Neutral10.0%
Negative5.0%

Teachley Subtractimals

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

In-app purchases

None

TenseBuilder

No in-app purchases

None

Teachley Subtractimals

No in-app purchases

Questions

Is TenseBuilder free?
TenseBuilder costs $9.99, with no in-app purchases.
Is Teachley Subtractimals free?
Teachley Subtractimals costs $4.99, with no in-app purchases.
Which has better reviews, TenseBuilder or Teachley Subtractimals?
Teachley Subtractimals is rated higher. TenseBuilder averages 4.0 out of 5 from 2 ratings, while Teachley Subtractimals averages 5.0 from 3 ratings.
Do TenseBuilder or Teachley Subtractimals have ads?
Neither TenseBuilder nor Teachley Subtractimals shows ads.
Which is updated more often, TenseBuilder or Teachley Subtractimals?
TenseBuilder ships an update every 6 months, and Teachley Subtractimals every 14 months. Most recently, TenseBuilder was updated on November 1, 2026 and Teachley Subtractimals on November 1, 2026.

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