# NSC Exam Prep vs SortCal

The clearest difference is review sentiment: SortCal at 100% against NSC Exam Prep's 20%. NSC Exam Prep's advantage is iOS requirement (13.0 vs 17.5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on September 9, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | NSC Exam Prep | SortCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sortcal/id1563242104/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Free | Free |
| Size | 98 MB | 3 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HeyMath! Innovation Lab(S) PTE. LTD.](https://appshunter.io/developer/723299512) | [Jaekeun Sung](https://appshunter.io/developer/1563197906) |

## What reviewers say

### NSC Exam Prep

[App page](https://appshunter.io/ios/app/nsc-exam-prep-maths/id1178888296)

Access past exam papers and detailed, animated solutions for mathematics. Organize practice by year or topic to systematically improve understanding and presentation of problem-solving techniques.

**Highlights:** Exam papers 2012-2022, Step-by-step animated solutions, Organized by year and topic, Mock exam practice, Focus on individual topics, Aligned with marking schemes

**In-app purchases:** none


### SortCal

[App page](https://appshunter.io/ios/app/sortcal/id1563242104)

This app combines calculator functionality with note-taking and flashcard study tools. It allows users to review past calculations and easily delete digits. It's designed for everyday math tasks and educational support.

**Highlights:** Previous calculations history, Digit deletion button, Note taking functionality, Flashcard study mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NSC Exam Prep free?

NSC Exam Prep is free to download, with no in-app purchases.

### Is SortCal free?

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

### Do NSC Exam Prep or SortCal have ads?

Neither NSC Exam Prep nor SortCal shows ads.

### Which is updated more often, NSC Exam Prep or SortCal?

NSC Exam Prep ships an update every 5 months, and SortCal every 5 months. Most recently, NSC Exam Prep was updated on September 9, 2026 and SortCal on June 5, 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.*