# AP Calculus AB/BC Test Prep vs HelixPlot

The clearest difference is in-app purchases: HelixPlot at none against AP Calculus AB/BC Test Prep's 4. HelixPlot also leads on update cadence (fortnightly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AP Calculus AB/BC Test Prep sells 4 in-app purchases, starting at $6.99 per 7 days. HelixPlot asks for nothing beyond the download.

AP Calculus AB/BC Test Prep ships an update every 5 months, HelixPlot fortnightly. The most recent releases landed on September 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | AP Calculus AB/BC Test Prep | HelixPlot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/ap-calculus-abbc-test-prep/id1553023908/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 12 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Expanded Apps](https://appshunter.io/developer/313709778) | [Yonghun Kim](https://appshunter.io/developer/1851972427) |

## What reviewers say

### AP Calculus AB/BC Test Prep

[App page](https://appshunter.io/ios/app/ap-calculus-abbc-test-prep/id1553023908)

Prepare for your AP Calculus AB/BC exam with 500 practice questions covering all topics. Detailed explanations are provided for each question, simulating the real exam experience. Track your progress and study effectively to achieve your best score.

**Highlights:** 500 AP-style questions and answers, Detailed review explanations, Simulates real AP exam, Updated material, Study, Timed Exam, and Bookmark modes, Progress tracking, iCloud save functionality

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $6.99 | per 7 days |
| 1 Month | $17.99 | per month |
| 1 Year | $69.99 | per year |
| AP Calculus AB/BC Exam Prep | $15.99 | one-time |


### HelixPlot

[App page](https://appshunter.io/ios/app/helixplot/id6757285741)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AP Calculus AB/BC Test Prep free?

AP Calculus AB/BC Test Prep is free to download, with in-app purchases available.

### Is HelixPlot free?

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

### Do AP Calculus AB/BC Test Prep or HelixPlot have ads?

Neither AP Calculus AB/BC Test Prep nor HelixPlot shows ads.

### Which is updated more often, AP Calculus AB/BC Test Prep or HelixPlot?

AP Calculus AB/BC Test Prep ships an update every 5 months, and HelixPlot fortnightly. Most recently, AP Calculus AB/BC Test Prep was updated on September 23, 2026 and HelixPlot on October 7, 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.*