# Photo Sign vs Data Modeler

The clearest difference is in-app purchases: Photo Sign at none against Data Modeler's 3. Photo Sign also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Data Modeler sells 3 in-app purchases, starting at $8.49 per month. Photo Sign asks for nothing beyond the download.

Photo Sign ships an update every 2 days, Data Modeler every 5 days. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Photo Sign | Data Modeler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/data-modeler/id1575153701/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | — | Freemium |
| Size | 2 MB | 23 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [AppTrix AB](https://appshunter.io/developer/1468876095) | [Rahul Katariya](https://appshunter.io/developer/1680332229) |

## What reviewers say

### Photo Sign

[App page](https://appshunter.io/ios/app/photo-sign/id1560510157)

**Features:** Vision Pro support

**In-app purchases:** none


### Data Modeler

[App page](https://appshunter.io/ios/app/data-modeler/id1575153701)

Effortlessly create, visualize, and export complex data models for your projects. Design entities, relationships, and attributes with an intuitive editor. Add data to test your models and export them as JSON documents or diagrams.

**Highlights:** Intuitive data model editor, Create entities, attributes, and relationships, Define cardinalities and relationship types, Add and store data within models, Visualize models as ER diagrams, Export data as JSON documents

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $8.49 | per month |
| Annual | $59.99 | per year |
| Introductory Lifetime Offer | $89.99 | one-time |


## Frequently asked questions

### Is Photo Sign free?

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

### Is Data Modeler free?

Data Modeler is free to download, with in-app purchases available.

### Do Photo Sign or Data Modeler have ads?

Neither Photo Sign nor Data Modeler shows ads.

### Which is updated more often, Photo Sign or Data Modeler?

Photo Sign ships an update every 2 days, and Data Modeler every 5 days. Most recently, Photo Sign was updated on November 7, 2026 and Data Modeler on November 3, 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.*