# TT Geometry vs Under Over Fellowship

The clearest difference is update cadence: TT Geometry at every 2 months against Under Over Fellowship's every 4 months. TT Geometry also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

TT Geometry ships an update every 2 months, Under Over Fellowship every 4 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TT Geometry | Under Over Fellowship |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (53 ratings)](https://appshunter.io/ios/app/tt-geometry/id1516357927/reviews)** | — |
| Number of ratings | **53** | — |
| Positive reviews | 78.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 99 MB | 56 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) | [Under Over Fellowship](https://appshunter.io/developer/1672158692) |

## What reviewers say

### TT Geometry

[App page](https://appshunter.io/ios/app/tt-geometry/id1516357927)

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

**In-app purchases:** none


### Under Over Fellowship

[App page](https://appshunter.io/ios/app/under-over-fellowship/id1672158690)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TT Geometry free?

TT Geometry is free to download, with no in-app purchases.

### Is Under Over Fellowship free?

Under Over Fellowship is free to download, with no in-app purchases.

### Do TT Geometry or Under Over Fellowship have ads?

Neither TT Geometry nor Under Over Fellowship shows ads.

### Which is updated more often, TT Geometry or Under Over Fellowship?

TT Geometry ships an update every 2 months, and Under Over Fellowship every 4 months. Most recently, TT Geometry was updated on October 23, 2026 and Under Over Fellowship on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*