Thirty Five mm vs Lab Assistant
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thirty Five mm
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A toolbox for photographers shooting with and developing film on their own. It provides utilities for developing, metering or remembering locations to shot.
Lab Assistant
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Bring clarity and consistency to your darkroom. Lab Assistant helps you build, edit, and run film development processes with confidence so you can focus on the craft, not stuck in a development book. Digitize your process and refine your favorite recipes step by step. Add notes, set precise durations, and define agitation patterns. When you’re ready to develop, Lab Assistant guides you with a clean, focused timer interface that keeps you on track from first pour to final rinse. Whether you're a seasoned printer or developing your first roll, Lab Assistant turns your workflow into repeatable results.
Screenshots
Verdict
The clearest difference is in-app purchases: Thirty Five mm at none against Lab Assistant's 1. Thirty Five mm also leads on iOS requirement (15.6 vs 26.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lab Assistant sells 1 one-off in-app purchase. Thirty Five mm asks for nothing beyond the download.
Thirty Five mm ships an update every 3 weeks, Lab Assistant every 5 weeks. The most recent releases landed on December 13, 2025 and July 22, 2026 respectively.
| Parameter | Thirty Five mm | Lab Assistant |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 36 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Loehr | Jack Kroll |
In-app purchases
Thirty Five mm
No in-app purchases
Lab Assistant
- Pro$1.99
Questions
Is Thirty Five mm free?
Is Lab Assistant free?
Do Thirty Five mm or Lab Assistant have ads?
Which is updated more often, Thirty Five mm or Lab Assistant?
Other comparisons
