# Pearson Square Calculation vs Emberglow

The clearest difference is price: Emberglow at Free against Pearson Square Calculation's $1.99. Emberglow also leads on update cadence (every 2 weeks vs every 21 months). Pearson Square Calculation's advantage is in-app purchases (none vs 3) and ratings volume (17 vs 4). On rating, review sentiment and ads there is nothing between them.

Emberglow is free to download; Pearson Square Calculation costs $1.99 up front. Emberglow sells 3 in-app purchases, starting at $3.99 per month. Pearson Square Calculation asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Pearson Square Calculation against 4.0 for Emberglow. Both are backed by a comparable volume of ratings — 17 and 4 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Pearson Square Calculation ships an update every 21 months, Emberglow every 2 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Pearson Square Calculation | Emberglow |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.9 (17 ratings)](https://appshunter.io/ios/app/pearson-square-calculation/id1418893046/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/emberglow-digital-detox/id6744365788/reviews)** |
| Number of ratings | **17** | 4 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 84 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Raghav Sharma](https://appshunter.io/developer/1370486193) | [Vaedros Software](https://appshunter.io/developer/1807328427) |

## What reviewers say

### Pearson Square Calculation

[App page](https://appshunter.io/ios/app/pearson-square-calculation/id1418893046)

This tool simplifies ration balancing using the Pearson square method. It helps determine exact proportions of ingredients for specific nutrient targets, applicable in various industries like animal feed, dairy, and food production.

**Highlights:** Pearson square method for ration balancing, Determine exact ingredient proportions, Calculate specific nutrient targets (e.g., crude protein), Multipurpose application in various industries, Simplifies complex ratio calculations

**Features:** Vision Pro support

**In-app purchases:** none


### Emberglow

[App page](https://appshunter.io/ios/app/emberglow-digital-detox/id6744365788)

This app transforms screen breaks into an RPG adventure. Lock your phone to send your hero on quests, and return to discover unfolding stories and rewards. It encourages reducing screen time and reconnecting with real life.

**Highlights:** Digital detox RPG, Progress happens offline, Mindful design, no ads, Branching storylines, Co-op quests, Reflection journal, Screen time control

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unQuest Circle Monthly | $3.99 | per month |
| unQuest Circle Annual | $29.99 | per year |
| unQuest Circle Lifetime Access | $79.99 | one-time |


## Frequently asked questions

### Is Pearson Square Calculation free?

Pearson Square Calculation costs $1.99, with no in-app purchases.

### Is Emberglow free?

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

### Which has better reviews, Pearson Square Calculation or Emberglow?

Emberglow is rated higher. Pearson Square Calculation averages 3.9 out of 5 from 17 ratings, while Emberglow averages 4.0 from 4 ratings.

### Do Pearson Square Calculation or Emberglow have ads?

Neither Pearson Square Calculation nor Emberglow shows ads.

### Which is updated more often, Pearson Square Calculation or Emberglow?

Pearson Square Calculation ships an update every 21 months, and Emberglow every 2 weeks. Most recently, Pearson Square Calculation was updated on October 24, 2026 and Emberglow on October 17, 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.*