# ProLab Film Developer vs DBW FilmCalc

The clearest difference is price: DBW FilmCalc at Free against ProLab Film Developer's $7.99. DBW FilmCalc also leads on update cadence (every 2 days vs every 3 months). ProLab Film Developer's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On ads and in-app purchases there is nothing between them.

DBW FilmCalc 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.

ProLab Film Developer ships an update every 3 months, DBW FilmCalc every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ProLab Film Developer | DBW FilmCalc |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| 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 3 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 189 MB | 1 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [James Maher](https://appshunter.io/developer/1880183966) | [Ian Barber](https://appshunter.io/developer/6790919344) |

## What reviewers say

### 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


### DBW FilmCalc

[App page](https://appshunter.io/ios/app/dbw-filmcalc/id6813898010)

**In-app purchases:** none


## Frequently asked questions

### Is ProLab Film Developer free?

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

### Is DBW FilmCalc free?

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

### Do ProLab Film Developer or DBW FilmCalc have ads?

Neither ProLab Film Developer nor DBW FilmCalc shows ads.

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

ProLab Film Developer ships an update every 3 months, and DBW FilmCalc every 2 days. Most recently, ProLab Film Developer was updated on November 5, 2026 and DBW FilmCalc on October 31, 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.*