# Pearl Diver HD vs Let's Sum It

The clearest difference is update cadence: Let's Sum It at every 3 months against Pearl Diver HD's every 20 months. Let's Sum It also leads on iOS requirement (10.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Pearl Diver HD ships an update every 20 months, Let's Sum It every 3 months. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Pearl Diver HD | Let's Sum It |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/pearl-diver-hd/id364617763/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 28 MB | 37 MB |
| Requires iOS | 17.6 | **10.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [New Mexico State University Board of Regents](https://appshunter.io/developer/337567846) | [Classroom Focused Software](https://appshunter.io/developer/406741679) |

## What reviewers say

### Pearl Diver HD

[App page](https://appshunter.io/ios/app/pearl-diver-hd/id364617763)

Dive into the ocean depths to master the number line, including fractions and decimals, by collecting pearls. This game is designed by educators to align with Common Core standards for grades 3-8.

**Highlights:** Number line mastery, Fractions and decimals, Common Core standards alignment, Progress tracking, Educational game design, Pearl collection gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Let's Sum It

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pearl Diver HD free?

Pearl Diver HD is free to download, with no in-app purchases.

### Is Let's Sum It free?

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

### Do Pearl Diver HD or Let's Sum It have ads?

Neither Pearl Diver HD nor Let's Sum It shows ads.

### Which is updated more often, Pearl Diver HD or Let's Sum It?

Pearl Diver HD ships an update every 20 months, and Let's Sum It every 3 months. Most recently, Pearl Diver HD was updated on October 17, 2026 and Let's Sum It on October 9, 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.*