# NostalCamera vs Gain Map HDR Converter

The clearest difference is price: NostalCamera at Free against Gain Map HDR Converter's $3.99. Gain Map HDR Converter's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On in-app purchases, device support and iOS requirement there is nothing between them.

NostalCamera is free to download; Gain Map HDR Converter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NostalCamera ships an update every 2 months, Gain Map HDR Converter every 2 weeks. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | NostalCamera | Gain Map HDR Converter |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Paid |
| Size | 72 MB | 7 MB |
| Requires iOS | **18.1** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Makiko Kawahara](https://appshunter.io/developer/1462034804) | [MARCELO PITZ ESPINDOLA](https://appshunter.io/developer/1820969307) |

## What reviewers say

### NostalCamera

[App page](https://appshunter.io/ios/app/nostalcamera/id6752860068)

**In-app purchases:** none


### Gain Map HDR Converter

[App page](https://appshunter.io/ios/app/gain-map-hdr-converter/id6794502526)

Enhance your photos by rebuilding their brightness range to create true HDR images. This app preserves metadata and offers batch processing, making your highlights glow on compatible devices while looking great everywhere else.

**Highlights:** Create true HDR gain maps, Preserves metadata, Batch processing, 10-bit HEIF output, Supports Display P3 color, Private by design

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

**In-app purchases:** none


## Frequently asked questions

### Is NostalCamera free?

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

### Is Gain Map HDR Converter free?

Gain Map HDR Converter costs $3.99, with no in-app purchases.

### Do NostalCamera or Gain Map HDR Converter have ads?

NostalCamera shows ads; Gain Map HDR Converter does not.

### Which is updated more often, NostalCamera or Gain Map HDR Converter?

NostalCamera ships an update every 2 months, and Gain Map HDR Converter every 2 weeks. Most recently, NostalCamera was updated on November 8, 2026 and Gain Map HDR Converter on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*