# Let's Sum It vs Owlet

The clearest difference is iOS requirement: Let's Sum It at 10.0 against Owlet's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Let's Sum It ships an update every 3 months, Owlet every 5 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Let's Sum It | Owlet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Size | 37 MB | 123 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPad | **iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Classroom Focused Software](https://appshunter.io/developer/406741679) | [BirdBrain Technologies LLC](https://appshunter.io/developer/1012525349) |

## What reviewers say

### Let's Sum It

[App page](https://appshunter.io/ios/app/lets-sum-it/id1125545882)

**Features:** macOS Compatibility

**In-app purchases:** none


### Owlet

[App page](https://appshunter.io/ios/app/owlet-cube6/id1540127271)

**In-app purchases:** none


## Frequently asked questions

### Is Let's Sum It free?

Let's Sum It is free to download, with no in-app purchases.

### Is Owlet free?

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

### Do Let's Sum It or Owlet have ads?

Neither Let's Sum It nor Owlet shows ads.

### Which is updated more often, Let's Sum It or Owlet?

Let's Sum It ships an update every 3 months, and Owlet every 5 months. Most recently, Let's Sum It was updated on October 9, 2026 and Owlet on October 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.*