# OpenSourceInitiative vs PhotoTrueSize

The clearest difference is ads: OpenSourceInitiative at none against PhotoTrueSize's shown. OpenSourceInitiative also leads on update cadence (monthly vs every 4 months) and iOS requirement (11.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

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

OpenSourceInitiative ships an update monthly, PhotoTrueSize every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OpenSourceInitiative | PhotoTrueSize |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Size | 21 MB | 23 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Meir Tsvi](https://appshunter.io/developer/1048958019) | [Nephritesoft](https://appshunter.io/developer/1807038341) |

## What reviewers say

### OpenSourceInitiative

[App page](https://appshunter.io/ios/app/opensourceinitiative/id1487779805)

**Features:** macOS Compatibility

**In-app purchases:** none


### PhotoTrueSize

[App page](https://appshunter.io/ios/app/phototruesize/id6781730443)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenSourceInitiative free?

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

### Is PhotoTrueSize free?

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

### Do OpenSourceInitiative or PhotoTrueSize have ads?

PhotoTrueSize shows ads; OpenSourceInitiative does not.

### Which is updated more often, OpenSourceInitiative or PhotoTrueSize?

OpenSourceInitiative ships an update monthly, and PhotoTrueSize every 4 months. Most recently, OpenSourceInitiative was updated on October 26, 2026 and PhotoTrueSize on October 24, 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.*