Grader+ vs Simple Power Grader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grader+
This app helps educators quickly grade assignments and tests. It allows for automatic percentage calculation, sorting of results, and statistical displays. Scores can be archived and exported for easy record-keeping.
- Automatic percentage calculation
- Sort results by name or score
- Display score statistics
- Archive scores
- Export results to CSV
- Dark mode support
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Other features include: * Enter the maximum score on the test to automatically calculate percentages * Sort results by name or by score * Display statistics for scores * Archive scores for reference * Export results to a CSV file for easy importing to a spreadsheet * Dark mode
Simple Power Grader
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.
- 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
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The Teachers' Friend (aka Der Lehrerfreund) grading scale is considered the standard for assigning grades worldwide. Advantages: → absolutely simple handling → fair, transparent grading → individual setting options (depending e.g. on the level of demand of your class work). 100% data protection - as no data is passed on Especially as a teacher or educator, you have to pay close attention to what happens with your own data. No problem with the Lehrerfreund grading scale calculator: all data remains on your smartphone, even in the Pro version. Reliable and competent calculation calculators - for over 10 years! In the last 10 years, the Teachers' Friend grading scale calculators have been used millions of times on the internet. We are constantly updating and optimizing the calculation logic - there is probably hardly anyone who has deeper knowledge about grading scales than we have. The grading scale app takes this established system to the next level: → Numerous setting options. Although the operation is conceivably simple (enter maximum score and tap CALCULATE button), there are numerous setting and customisation options, e.g: - Count half points or half correct answers - Grading scale for questions - Errors grading scale (e.g. for vocabulary tests) - Output as whole, half, third, quarter, tenth grades - Different grading scales (USA a.o.: A-F or A+/A/A- to F, custom scales can be set, e.g. 100-0, Germany 1-6, Germany upper level 15-0, Switzerland 6-1, Austria 1-5). - Different calculation logics - Classical grading scale (linear distribution) - New also with kink - grade scale (pass mark in %) - Base key (defined minimum/maximum limits) - K1/K2 (German KMK standard, takes into account deviation in some German provinces) - German CCI/IHK grading scale → Pro functions (after expiry of the trial version with 10 free calculations): By subscribing a yearly or half-yearly plan, you gain access to further valuable functions: - Saving your grading scales with name and remark ("Dictation class 8b - difficult") - So you can access the same grading scales several times or have your grading scales immediately at hand in discussions with students and parents. - Export your grading scales as PDF - to share, print, archive - Export your grading scales as CSV for Excel or similar for further processing in Excel or in pupil/class administration apps. - You support the continuous development and improvement of the Teachers' Friend grading scale calculator. Terms of use (EULA): https://www.apple.com/legal
Screenshots
Verdict
The clearest difference is in-app purchases: Grader+ at none against Simple Power Grader's 2. Simple Power Grader's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Simple Power Grader sells 2 in-app purchases, starting at $2.49 per 6 months. Grader+ asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and September 22, 2026 respectively.
| Parameter | Grader+ | Simple Power Grader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 55.6% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Davison-Reiber | Lehrerfreund GmbH |
Customer experience
Grader+
Simple Power Grader
In-app purchases
Grader+
No in-app purchases
Simple Power Grader
- Pro Abonnement (6 Monate)$2.496 Months
- Pro Abonnement (1 Jahr)$4.491 Year









