Comparison

Geometry Stash vs TT Geometry

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

Head to head
About

Geometry Stash

Access geometry theorems, postulates, and corollaries with descriptions and diagrams. Create and share custom slides with a built-in editor, exporting them in various formats. Ideal for students and educators needing a portable reference.

Highlights
  • Geometry theorem reference
  • Diagrams for geometric terms
  • Custom slide creation editor
  • Vector graphic slide export
  • iOS Spotlight Search integration
  • Slide Over and Split View support
  • Bulk slide import for educators
Features
Read full description

Reviewing geometry on the go has never been easier. Just swipe to a term to view its description and diagram! "Instead of paging through their textbook for the theorems, now students can use this app" -Wired "Geometry Stash is truly ideal for anyone needing a quick reference guide for geometric theories" -SlapApp Which theorem completes the proof? Refresh your knowledge of the most commonly used theorems, postulates, and corollaries with Geometry Stash. Swipe to a term to check it out! Make your own slides to share with others using a built in editor. Write custom slides with drawing commands with instant preview. Share slides in a snap — Airdrop, iCloud, Message, Mail, and more! Your creations will be rendered as vector graphics that retain their crisp and sharp edges no matter what device others and you use! Additional Features: • Custom slide creation: Write your own slides through drawing commands in JSON, a lightweight data-interchange format. Edit on your device, computer, anywhere. • iOS Spotlight Search: Find your slides using iOS Search. • Slide Over and Split View: View slides alongside other study material. • iCloud Drive: Access created slides on all your devices. Write on the computer and view on the go. • Portability: Export slides as JSON, Image file, or Text. • Guided Access: Limit editing slide functionality to keep learners on track. • Bulk Import: Distribute multiple custom slides using a single bulk import file. Ideal for educators and administrators! What others have said about Geometry Stash: "Geometry Stash Offers Comprehensive Mathematical Guide" - The iPhone App Review "My pick for Geometry Stash in terms of what to use it for is actually studying for exams. It certainly beats the flash card system I used for my SATs" - AppBite "Don't let your Math assignments get you down when you have Geometry Stash to help you through" - CooliPhoneApps.com "[Mirroring] would be great in a classroom or for a group study session" - EDUInReview

About

TT Geometry

This app enhances a geometry course with independent learning and on-the-go access, even offline for up to six lessons. It offers audiovisual lectures, practice problems, automated grading, and detailed explanations, making math engaging for students.

Highlights
  • Offline access for up to 6 lessons
  • 110 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 Geometry 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… • 110 audiovisual lectures that teach every core concept in the standard 10th 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 Geometry 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.

Screenshots

Geometry Stash4 screens
TT Geometry4 screens

Verdict

The call

The clearest difference is rating: Geometry Stash at 4.7 against TT Geometry's 3.6. TT Geometry's advantage is ratings volume (44 vs 11) and iOS requirement (12.0 vs 15.6). On price, review sentiment, update cadence 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

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

ReceptionRating · Positive reviews · Number of ratings

Geometry Stash holds the better App Store score, 4.7 against 3.6. Both are backed by a comparable volume of ratings — 11 and 44 respectively. Written reviews point the same way: 83% of Geometry Stash's written reviews are positive against 78% of TT Geometry's.

UpkeepUpdate frequency

Geometry Stash ships an update every 6 weeks, TT Geometry every 2 months. The most recent releases landed on September 27, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Geometry Stash versus TT Geometry: the parameters behind the verdict, then further details
ParameterGeometry StashTT Geometry
PriceFreeFree
Rating4.7 (11 ratings) — better3.6 (44 ratings)
Positive reviews83.3% of reviews — better78.3% of reviews
Number of ratings1144 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.612.0 — better
Further details — not scored
Size3 MB99 MB
Age rating4+4+
DeveloperAnson LiuTeaching Textbooks, Inc.

Customer experience

Geometry Stash

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews54 reviews
Positive83.3%
Neutral1.9%
Negative14.8%

TT Geometry

All ratings44 ratings
Positive65.9%
Neutral6.8%
Negative27.3%
Written reviews23 reviews
Positive78.3%
Neutral8.7%
Negative13.0%

In-app purchases

None

Geometry Stash

No in-app purchases

None

TT Geometry

No in-app purchases

Questions

Is Geometry Stash free?
Geometry Stash is free to download, with no in-app purchases.
Is TT Geometry free?
TT Geometry is free to download, with no in-app purchases.
Which has better reviews, Geometry Stash or TT Geometry?
Geometry Stash is rated higher. Geometry Stash averages 4.7 out of 5 from 11 ratings, while TT Geometry averages 3.6 from 44 ratings.
Do Geometry Stash or TT Geometry have ads?
Neither Geometry Stash nor TT Geometry shows ads.
Which is updated more often, Geometry Stash or TT Geometry?
Geometry Stash ships an update every 6 weeks, and TT Geometry every 2 months. Most recently, Geometry Stash was updated on September 27, 2026 and TT Geometry on October 8, 2026.

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