# SmartLab35 vs ProLab Film Developer

The clearest difference is price: SmartLab35 at Free against ProLab Film Developer's $7.99. SmartLab35 also leads on update cadence (every 5 weeks vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

SmartLab35 is free to download; ProLab Film Developer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SmartLab35 ships an update every 5 weeks, ProLab Film Developer every 3 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SmartLab35 | ProLab Film Developer |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prolab-film-developer/id6759682425/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | — | Paid |
| Size | 23 MB | 189 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SANTIAGO FRANCISCO RAMIREZ SONNTAG](https://appshunter.io/developer/1721708676) | [James Maher](https://appshunter.io/developer/1880183966) |

## What reviewers say

### SmartLab35

[App page](https://appshunter.io/ios/app/smartlab35/id6474482009)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProLab Film Developer

[App page](https://appshunter.io/ios/app/prolab-film-developer/id6759682425)

Achieve consistent color film development at home with real-time adjustments for temperature and chemistry. This app eliminates guesswork by actively recalculating development times based on changing conditions, ensuring repeatable results without expensive equipment.

**Highlights:** Real-time time compensation, Chemistry tracking, Dynamic Time-Temperature Engine, Push processing support, Guided workflow, Supports major C-41 kits

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartLab35 free?

SmartLab35 is free to download, with no in-app purchases.

### Is ProLab Film Developer free?

ProLab Film Developer costs $7.99, with no in-app purchases.

### Do SmartLab35 or ProLab Film Developer have ads?

Neither SmartLab35 nor ProLab Film Developer shows ads.

### Which is updated more often, SmartLab35 or ProLab Film Developer?

SmartLab35 ships an update every 5 weeks, and ProLab Film Developer every 3 months. Most recently, SmartLab35 was updated on September 23, 2026 and ProLab Film Developer on September 18, 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.*