# GradingScale vs Immunity Science

The clearest difference is update cadence: Immunity Science at every 14 months against GradingScale's every 93 months. GradingScale's advantage is iOS requirement (11.3 vs 13.0). 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.

GradingScale ships an update every 93 months, Immunity Science every 14 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | GradingScale | Immunity Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gradingscale/id1372581887/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 93 months | **Every 14 months** |
| Monetization | Free | — |
| Size | 8 MB | 32 MB |
| Requires iOS | **11.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nady Analytics, LLC](https://appshunter.io/developer/1236618804) | [Immunity Science, Inc.](https://appshunter.io/developer/1672160767) |

## What reviewers say

### GradingScale

[App page](https://appshunter.io/ios/app/gradingscale/id1372581887)

Easily calculate assignment grades by inputting the total number of questions and the number answered correctly. This tool streamlines the grading process for educators and students alike.

**Highlights:** Calculate assignment grades, Input total questions, Input correct answers, Streamlined grading process

**Features:** macOS Compatibility

**In-app purchases:** none


### Immunity Science

[App page](https://appshunter.io/ios/app/immunity-science/id1672160765)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GradingScale free?

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

### Is Immunity Science free?

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

### Do GradingScale or Immunity Science have ads?

Neither GradingScale nor Immunity Science shows ads.

### Which is updated more often, GradingScale or Immunity Science?

GradingScale ships an update every 93 months, and Immunity Science every 14 months. Most recently, GradingScale was updated on October 26, 2026 and Immunity Science on October 19, 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.*