# TT Math 4 vs Kerigami

The clearest difference is review sentiment: Kerigami at 100% against TT Math 4's 37%. Kerigami also leads on rating (5.0 vs 3.5). TT Math 4's advantage is in-app purchases (none vs 1) and ratings volume (83 vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. Kerigami sells 1 one-off in-app purchase. TT Math 4 asks for nothing beyond the download.

Kerigami holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: TT Math 4 has 83 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 37% of TT Math 4's written reviews are positive against 100% of Kerigami's.

TT Math 4 ships an update every 2 months, Kerigami every 6 weeks. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | TT Math 4 | Kerigami |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (83 ratings)](https://appshunter.io/ios/app/tt-math-4/id1516356640/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kerigami-task-timer/id6767952551/reviews)** |
| Number of ratings | **83** | 1 |
| Positive reviews | 37.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 110 MB | 16 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Teaching Textbooks, Inc.](https://appshunter.io/developer/1516345361) | [KERIGAMI LLC](https://appshunter.io/developer/1888887164) |

## What reviewers say

### TT Math 4

[App page](https://appshunter.io/ios/app/tt-math-4/id1516356640)

This educational app provides interactive math lessons and practice problems for 4th graders. It offers automated grading, step-by-step explanations, and parental controls for progress tracking. The app allows for offline use of up to six lessons, making it ideal for on-the-go learning.

**Highlights:** 119 audiovisual lectures, Thousands of practice problems, Automated grading, Step-by-step audiovisual explanations, Parental progress tracking, Offline lesson access (up to 6)

**In-app purchases:** none

**What reviewers like**

- 👍 Simplifies learning math
- 🏃‍♀️ Allows students to work at their own pace
- 🔌 Practical and well-thought-out
- 💻 Works seamlessly on multiple devices
- 📚 Great for teaching

**What reviewers complain about**

- 😠 Too much lecturing and practice
- ⏳ Not enough time to learn new concepts
- 🤔 Problems are confusing
- 📉 Difficulty with advanced topics
- 😫 Frustrating user experience

**Reported bugs**

- Update won't save answers
- App closes itself out
- Problems with the scratchpad/scrolling
- Missing letters when typing passwords
- App freezes when downloading lesson content

**Requested features**

- Make it more fun
- Only have a lecture, then go straight to problems
- Allow keyboard use on iPad
- Make it harder for advanced students
- Remove discouraging phrases like 'you are officially amazing'


### Kerigami

[App page](https://appshunter.io/ios/app/kerigami-task-timer/id6767952551)

This app helps children manage their time without the stress of numbers or ticking clocks. It uses visual cues and evidence-based work/break patterns to encourage focus and reward completion. Designed for children who find traditional timers overwhelming, it offers a calm and engaging experience.

**Highlights:** Number-free visual timer, Evidence-based work/break rhythms, Customizable visual scenes, Calm transitions and prompts, Celebratory session endings, Accessibility features

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $6.99 | one-time |


## Frequently asked questions

### Is TT Math 4 free?

TT Math 4 is free to download, with no in-app purchases.

### Is Kerigami free?

Kerigami is free to download, with in-app purchases available.

### Which has better reviews, TT Math 4 or Kerigami?

Kerigami is rated higher. TT Math 4 averages 3.5 out of 5 from 83 ratings, while Kerigami averages 5.0 from 1 ratings.

### Do TT Math 4 or Kerigami have ads?

Neither TT Math 4 nor Kerigami shows ads.

### Which is updated more often, TT Math 4 or Kerigami?

TT Math 4 ships an update every 2 months, and Kerigami every 6 weeks. Most recently, TT Math 4 was updated on October 14, 2026 and Kerigami on October 10, 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.*