# Image Alignment vs HP15C

The clearest difference is price: Image Alignment at Free against HP15C's $4.99. Image Alignment also leads on update cadence (fortnightly vs every 6 months). HP15C's advantage is ads (none vs shown) and chart position (#181 vs unranked). On in-app purchases and device support there is nothing between them.

Image Alignment is free to download; HP15C costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Image Alignment ships an update fortnightly, HP15C every 6 months. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Image Alignment | HP15C |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[2.7 (3 ratings)](https://appshunter.io/ios/app/hp15c-scientific-calculator/id6741306693/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | — | Paid |
| Best chart rank | — | **#181** |
| Size | 84 MB | 24 MB |
| Requires iOS | 17.7.2 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [FERMAVE](https://appshunter.io/developer/1743250649) |

## What reviewers say

### Image Alignment

[App page](https://appshunter.io/ios/app/image-alignment/id6511211319)

**Features:** macOS Compatibility

**In-app purchases:** none


### HP15C

[App page](https://appshunter.io/ios/app/hp15c-scientific-calculator/id6741306693)

**Currently charting:** #181 Top Paid · Utilities (US App Store)

Relive the classic computing experience with a vintage scientific calculator. This app emulates a beloved 90s model, offering a nostalgic and functional tool for calculations.

**Highlights:** Vintage scientific calculator emulation, Classic 90s design, Functional for scientific calculations, Nostalgic user experience

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

**In-app purchases:** none


## Frequently asked questions

### Is Image Alignment free?

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

### Is HP15C free?

HP15C costs $4.99, with no in-app purchases.

### Do Image Alignment or HP15C have ads?

Image Alignment shows ads; HP15C does not.

### Which is updated more often, Image Alignment or HP15C?

Image Alignment ships an update fortnightly, and HP15C every 6 months. Most recently, Image Alignment was updated on October 16, 2026 and HP15C on October 21, 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.*