# Stolper App vs Simple Power Grader

The clearest difference is in-app purchases: Stolper App at none against Simple Power Grader's 2. Stolper App also leads on update cadence (every 3 days vs every 2 months). Simple Power Grader's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price and ads there is nothing between them.

Both are free to download. Simple Power Grader sells 2 in-app purchases, starting at $2.49 per 6 months. Stolper App asks for nothing beyond the download.

Stolper App ships an update every 3 days, Simple Power Grader every 2 months. The most recent releases landed on October 12, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Stolper App | Simple Power Grader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 55.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 79 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Florian Zindel](https://appshunter.io/developer/1233983485) | [Lehrerfreund GmbH](https://appshunter.io/developer/1560701914) |

## What reviewers say

### Stolper App

[App page](https://appshunter.io/ios/app/stolper-app/id1233983486)

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

**In-app purchases:** none


### Simple Power Grader

[App page](https://appshunter.io/ios/app/simple-power-grader/id1603627742)

This app offers a simple yet powerful tool for educators to create and apply custom grading scales. It supports various international grading systems and allows for detailed customization of how scores are translated into grades, ensuring fair and transparent evaluation.

**Highlights:** Customizable grading scales, Supports international grading systems, Option to count half points, Error grading scale option, Multiple output formats for grades, Save and export grading scales (Pro), Data protection focused

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Abonnement (6 Monate) | $2.49 | per 6 months |
| Pro Abonnement (1 Jahr) | $4.49 | per year |


## Frequently asked questions

### Is Stolper App free?

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

### Is Simple Power Grader free?

Simple Power Grader is free to download, with in-app purchases available.

### Do Stolper App or Simple Power Grader have ads?

Neither Stolper App nor Simple Power Grader shows ads.

### Which is updated more often, Stolper App or Simple Power Grader?

Stolper App ships an update every 3 days, and Simple Power Grader every 2 months. Most recently, Stolper App was updated on October 12, 2026 and Simple Power Grader on September 22, 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.*