# Ace Math Flash Cards vs Number Line, by MLC

The clearest difference is ads: Number Line, by MLC at none against Ace Math Flash Cards's shown. Number Line, by MLC also leads on rating (4.4 vs 4.0) and monetization model (free vs ad-supported). Ace Math Flash Cards's advantage is ratings volume (2K vs 15) and review sentiment (85% vs 67%). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

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

Number Line, by MLC holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Ace Math Flash Cards has 2K ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 85% of Ace Math Flash Cards's written reviews are positive against 67% of Number Line, by MLC's, so the app with the better star average is not the one people write more warmly about.

Ace Math Flash Cards ships an update every 8 months, Number Line, by MLC every 13 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | Ace Math Flash Cards | Number Line, by MLC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2K ratings)](https://appshunter.io/ios/app/ace-math-flash-cards/id463193339/reviews) | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** |
| Number of ratings | **2K** | 15 |
| Positive reviews | **84.9% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 8 months** | Every 13 months |
| Monetization | Ad-supported | **Free** |
| Size | 13 MB | 7 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) | [The Math Learning Center](https://appshunter.io/developer/1542700905) |

## What reviewers say

### Ace Math Flash Cards

[App page](https://appshunter.io/ios/app/ace-math-flash-cards/id463193339)

Practice fundamental arithmetic operations with customizable flashcards. Focus on specific math skills by setting your own problem parameters and choose from various operators. Enhance learning with features like multiple choice, mistake review, and timed sessions.

**Highlights:** Customizable problem sets, Addition, subtraction, multiplication, division, Multiple choice option, Redo mistakes feature, Timed practice sessions, Mix operators

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

**In-app purchases:** none

**What reviewers like**

- 🤩 Amazing app
- 👍 Helpful for learning math
- 🚀 Efficient practice
- 💎 Great for kids
- 🎉 Fun and engaging

**What reviewers complain about**

- 🐛 Occasional crashes or glitches
- 🔍 Difficult to find settings
- 🔊 Distracting wrong answer sounds
- 🕰️ Limiting number of questions

**Reported bugs**

- Addition and subtraction questions limited to 9 problems
- Multiple choice option not working on iPad

**Requested features**

- Provide correct answers when mistakes are made
- Expand question range and customization options
- Add more visual/audio feedback for progress


### Number Line, by MLC

[App page](https://appshunter.io/ios/app/number-line-by-mlc/id751816884)

This app allows students to visualize number sequences and demonstrate mathematical strategies. It supports various number types and offers tools for annotation, problem-solving, and sharing work. Ideal for elementary classrooms and iPad learning environments.

**Highlights:** Visualize number sequences, Demonstrate counting, adding, subtracting, multiplying, dividing, Use whole numbers, fractions, decimals, or negative numbers, Add custom tick marks and labels, Hide and reveal numbers and jumps, Annotation and drawing tools, Save and share work

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ace Math Flash Cards free?

Ace Math Flash Cards is free to download, with no in-app purchases.

### Is Number Line, by MLC free?

Number Line, by MLC is free to download, with no in-app purchases.

### Which has better reviews, Ace Math Flash Cards or Number Line, by MLC?

Number Line, by MLC is rated higher. Ace Math Flash Cards averages 4.0 out of 5 from 2K ratings, while Number Line, by MLC averages 4.4 from 15 ratings.

### Do Ace Math Flash Cards or Number Line, by MLC have ads?

Ace Math Flash Cards shows ads; Number Line, by MLC does not.

### Which is updated more often, Ace Math Flash Cards or Number Line, by MLC?

Ace Math Flash Cards ships an update every 8 months, and Number Line, by MLC every 13 months. Most recently, Ace Math Flash Cards was updated on November 6, 2026 and Number Line, by MLC on November 6, 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.*