# BTZS ExpoDev vs LFTools

The clearest difference is price: LFTools at Free against BTZS ExpoDev's $24.99. LFTools also leads on update cadence (every 3 months vs every 12 months). BTZS ExpoDev's advantage is iOS requirement (13.7 vs 18). On ads, in-app purchases and device support there is nothing between them.

LFTools is free to download; BTZS ExpoDev costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BTZS ExpoDev ships an update every 12 months, LFTools every 3 months. The most recent releases landed on October 7, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | BTZS ExpoDev | LFTools |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/btzs-expodev/id507385770/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 16 MB | 4 MB |
| Requires iOS | **13.7** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TinyOctopus, LLC](https://appshunter.io/developer/507385773) | [Ruediger Merz](https://appshunter.io/developer/1653209743) |

## What reviewers say

### BTZS ExpoDev

[App page](https://appshunter.io/ios/app/btzs-expodev/id507385770)

This app helps traditional film photographers accurately expose black and white film using custom film test data. It calculates precise exposures and development times in the field for consistent results and easier darkroom printing.

**Highlights:** Exposure record keeping, Film Profile, lens, and filter management, Incident and Zone System metering support, Depth of Field calculator, Reciprocity failure adjustments, Integrated exposure timer

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

**In-app purchases:** none


### LFTools

[App page](https://appshunter.io/ios/app/lftools/id6479173686)

**In-app purchases:** none


## Frequently asked questions

### Is BTZS ExpoDev free?

BTZS ExpoDev costs $24.99, with no in-app purchases.

### Is LFTools free?

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

### Do BTZS ExpoDev or LFTools have ads?

Neither BTZS ExpoDev nor LFTools shows ads.

### Which is updated more often, BTZS ExpoDev or LFTools?

BTZS ExpoDev ships an update every 12 months, and LFTools every 3 months. Most recently, BTZS ExpoDev was updated on October 7, 2026 and LFTools on September 11, 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.*