# Todo Math vs FLEX

The clearest difference is review sentiment: Todo Math at 74% against FLEX's 0%. Todo Math also leads on update cadence (every 3 weeks vs every 19 months). FLEX's advantage is in-app purchases (none vs 10) and iOS requirement (9.3 vs 11.0). On price, ads and device support there is nothing between them.

Both are free to download. Todo Math sells 6 one-off in-app purchases. FLEX asks for nothing beyond the download.

Todo Math ships an update every 3 weeks, FLEX every 19 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Todo Math | FLEX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/todo-math/id666465255/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | **73.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 588 MB | 7 MB |
| Requires iOS | 11.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enuma, Inc.](https://appshunter.io/developer/577646433) | [Leripa AB](https://appshunter.io/developer/454449587) |

## What reviewers say

### Todo Math

[App page](https://appshunter.io/ios/app/todo-math/id666465255)

This app offers over 2,000 interactive math activities for children from preschool to 2nd grade. It covers counting, calculation, logic, geometry, and time-telling, with adjustable challenge levels and accessibility features for all learners.

**Highlights:** 2,000+ interactive math activities, Covers counting, calculation, logic, geometry, time, Adjustable challenge levels (Pre-K to 2nd grade), Accessibility features (8 languages, dyslexic font), Parent dashboard for progress tracking, Placement test for accurate level selection

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Year Subscription | $49.99 | one-time |
| One Year Subscription | $69.99 | one-time |
| One Year Subscription | $79.99 | one-time |
| Two Years Subscription | $89.99 | one-time |
| One Year Subscription | $99.99 | one-time |
| Two Years Subscription | $119.99 | one-time |

**What reviewers like**

- 👍 Engaging and educational math games
- 🚀 Effective for learning math concepts
- 💡 Customizable settings for different learning styles
- 👍 Visually appealing and non-distracting graphics
- 👍 Helpful for students with special needs

**What reviewers complain about**

- 🐛 Occasional crashes and bugs
- 💰 Expensive subscription model
- 🔒 Lack of transparency around subscription details
- 🚫 Removal of free features in later versions

**Reported bugs**

- Sound not working on some devices
- Handwriting recognition issues
- Progress reset after app updates

**Requested features**

- Expand content to higher grade levels
- Add more languages and currency options
- Improve progress tracking and reporting for parents
- Introduce more personalization options
- Provide offline access to content


### FLEX

[App page](https://appshunter.io/ios/app/flex-math-tools/id977115416)

This interactive educational tool helps teachers visualize basic math concepts like fractions and number lines. It allows for the creation of independent student projects and supplements math training programs. Enhance understanding of mathematical skills with various visual aids.

**Highlights:** Number lines visualization, Fraction tools, Number bonds, Number blocks, Create student projects, Mathematical symbols

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Todo Math free?

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

### Is FLEX free?

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

### Do Todo Math or FLEX have ads?

Neither Todo Math nor FLEX shows ads.

### Which is updated more often, Todo Math or FLEX?

Todo Math ships an update every 3 weeks, and FLEX every 19 months. Most recently, Todo Math was updated on October 29, 2026 and FLEX on October 29, 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.*