# Resistors Parallel vs SIE Exam

The clearest difference is price: SIE Exam at Free against Resistors Parallel's $1.99. SIE Exam also leads on update cadence (every 4 months vs every 59 months). Resistors Parallel's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

SIE Exam is free to download; Resistors Parallel costs $1.99 up front. SIE Exam sells 2 in-app purchases, starting at $24.99 per month. Resistors Parallel asks for nothing beyond the download.

Resistors Parallel ships an update every 59 months, SIE Exam every 4 months. The most recent releases landed on May 15, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Resistors Parallel | SIE Exam |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.5 (311 ratings)](https://appshunter.io/ios/app/sie-exam/id1584509838/reviews)** |
| Number of ratings | — | **311** |
| Positive reviews | — | 30.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 259 MB | 35 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) | [MastrAPI](https://appshunter.io/developer/1618627725) |

## What reviewers say

### Resistors Parallel

[App page](https://appshunter.io/ios/app/resistors-parallel-edutech-era/id1552663387)

**Features:** macOS Compatibility

**In-app purchases:** none


### SIE Exam

[App page](https://appshunter.io/ios/app/sie-exam/id1584509838)

Prepare for the Securities Industry Essentials (SIE) exam with a personalized study plan. Practice with over 700 questions, track your progress, and compare your scores to the community average to boost your confidence and pass on your first attempt.

**Highlights:** Personalized study plan, 700+ practice questions, Track strengths and weaknesses, Detailed test statistics, Community score comparison, Topic-based learning

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly with Trial | $24.99 | per month |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Resistors Parallel free?

Resistors Parallel costs $1.99, with no in-app purchases.

### Is SIE Exam free?

SIE Exam is free to download, with in-app purchases available.

### Do Resistors Parallel or SIE Exam have ads?

Neither Resistors Parallel nor SIE Exam shows ads.

### Which is updated more often, Resistors Parallel or SIE Exam?

Resistors Parallel ships an update every 59 months, and SIE Exam every 4 months. Most recently, Resistors Parallel was updated on May 15, 2026 and SIE Exam on October 30, 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.*