# Grade Aid vs Centrum School Grading

The clearest difference is in-app purchases: Centrum School Grading at none against Grade Aid's 1. Grade Aid's advantage is update cadence (every 8 months vs every 49 months) and iOS requirement (18.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Grade Aid sells 1 one-off in-app purchase. Centrum School Grading asks for nothing beyond the download.

Grade Aid ships an update every 8 months, Centrum School Grading every 49 months. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Grade Aid | Centrum School Grading |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grade-aid/id448856123/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 49 months |
| Monetization | Free | — |
| Size | 3 MB | 3 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eric Dievendorf](https://appshunter.io/developer/397902503) | [Meranier-Gymnasium Lichtenfels](https://appshunter.io/developer/1641109036) |

## What reviewers say

### Grade Aid

[App page](https://appshunter.io/ios/app/grade-aid/id448856123)

Easily calculate grades and score assignments or tests. This tool helps educators quickly score tests and assignments based on correct or incorrect answers. Students can verify their grades and determine how many questions they can miss while maintaining a target grade.

**Highlights:** Grade calculation, Score assignments, Test scoring, Target grade verification, Homeschooling support

**Features:** macOS Compatibility, Family Sharing, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Feature Unlock | $2.99 | one-time |


### Centrum School Grading

[App page](https://appshunter.io/ios/app/centrum-school-grading/id1641108674)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Grade Aid free?

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

### Is Centrum School Grading free?

Centrum School Grading is free to download, with no in-app purchases.

### Do Grade Aid or Centrum School Grading have ads?

Neither Grade Aid nor Centrum School Grading shows ads.

### Which is updated more often, Grade Aid or Centrum School Grading?

Grade Aid ships an update every 8 months, and Centrum School Grading every 49 months. Most recently, Grade Aid was updated on November 6, 2026 and Centrum School Grading on November 11, 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.*