# GKG Doku vs RST Photo

GKG Doku and RST Photo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

GKG Doku ships an update every 3 months, RST Photo every 2 months. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | GKG Doku | RST Photo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 40 MB | 40 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gesamtkirchengemeinde Fuerth Stadt und Land](https://appshunter.io/developer/1617574204) | [The Reggio School of Tokyo](https://appshunter.io/developer/1764464490) |

## What reviewers say

### GKG Doku

[App page](https://appshunter.io/ios/app/gkg-doku/id1617574202)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### RST Photo

[App page](https://appshunter.io/ios/app/rst-photo/id6657977458)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is GKG Doku free?

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

### Is RST Photo free?

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

### Do GKG Doku or RST Photo have ads?

Neither GKG Doku nor RST Photo shows ads.

### Which is updated more often, GKG Doku or RST Photo?

GKG Doku ships an update every 3 months, and RST Photo every 2 months. Most recently, GKG Doku was updated on October 27, 2026 and RST Photo on November 4, 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.*