# Number Frames, by MLC vs Owlet

The clearest difference is rating: Owlet at 5.0 against Number Frames, by MLC's 4.0. Owlet also leads on update cadence (every 3 months vs every 13 months) and iOS requirement (12.0 vs 15.4). Number Frames, by MLC's advantage is ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Owlet holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Number Frames, by MLC has 7 ratings behind it against 1, so its average is the more settled of the two.

Number Frames, by MLC ships an update every 13 months, Owlet every 3 months. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Number Frames, by MLC | Owlet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (7 ratings)](https://appshunter.io/ios/app/number-frames-by-mlc/id873198123/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/owlet-glowgrid/id1540125619/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 12 MB | 124 MB |
| Requires iOS | 15.4 | **12.0** |
| Devices | iPad | **iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [The Math Learning Center](https://appshunter.io/developer/1542700905) | [BirdBrain Technologies LLC](https://appshunter.io/developer/1012525349) |

## What reviewers say

### Number Frames, by MLC

[App page](https://appshunter.io/ios/app/number-frames-by-mlc/id873198123)

This app provides virtual number frames to help elementary students visualize and manipulate numbers up to one hundred. It supports counting, comparing, and computing, aiding the transition from one-by-one counting to more efficient strategies. Custom frames can be created for advanced visualization of factors and fractions.

**Highlights:** Standard and custom number frames, Variety of counters and colors, 5s grid for grouping emphasis, Resizable covers for problem modeling, Drawing and annotation tools, Math text and writing tools, Shareable work via image or code

**Features:** macOS Compatibility

**In-app purchases:** none


### Owlet

[App page](https://appshunter.io/ios/app/owlet-glowgrid/id1540125619)

This app uses a physical manipulative to teach arithmetic operations. Students model addition, subtraction, multiplication, and division using colored lights on a board, with the app reflecting their work in real-time. It offers various modes for exploration, problem-solving, and creation.

**Highlights:** Model arithmetic operations with colored lights, Real-time app and board synchronization, Addition, Subtraction, Multiplication, Division modes, Explore, Make, Solve, Find, and Create activities, Supports missing number problems, Create custom arithmetic problems

**In-app purchases:** none


## Frequently asked questions

### Is Number Frames, by MLC free?

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

### Is Owlet free?

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

### Which has better reviews, Number Frames, by MLC or Owlet?

Owlet is rated higher. Number Frames, by MLC averages 4.0 out of 5 from 7 ratings, while Owlet averages 5.0 from 1 ratings.

### Do Number Frames, by MLC or Owlet have ads?

Neither Number Frames, by MLC nor Owlet shows ads.

### Which is updated more often, Number Frames, by MLC or Owlet?

Number Frames, by MLC ships an update every 13 months, and Owlet every 3 months. Most recently, Number Frames, by MLC was updated on September 16, 2026 and Owlet on September 8, 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.*