Comparison

Film Process Timer vs Thirty Five mm

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Film Process Timer

This app helps manage film developing processes with customizable multi-step timers. It offers a special darkroom mode with red hues and allows synchronization across devices. Predefined timers are available in the free version, with expanded features in the paid version.

Highlights
  • Multiple customizable timers
  • Multi-step timer configuration
  • Darkroom color mode
  • Home screen notifications
  • Timer grouping and favorites
  • iCloud synchronization
Features
Read full description

A film developing timer, with a darkroom color scheme mode where the colors are predominately red hues. It features the ability to create multiple timers, with multiple steps. The timers can be - Grouped in to categories or types - Duplicated - Set to show notification on the Home Screen (if notifications are enabled) - Marked as a favourite for easier access Some predefined timers are available with the free version of the app. These are not modifiable. Steps within timers can be - Up to 24 hours - Easily reordered (drag and drop) - Duplicated - Run automatically or manually (first step always has to be started manually) - Set up to make sound tone periodically. Running a timer shows - Current step information - Remaining time for the current step - Information for the next step - Progress of the process - Remaining time for the process - Selecting the darkroom color mode The user can select options to - Run the app in light or dark mode - Use the darkroom mode color scheme - Enable sounds (off, essential and all) - Change the color of the timer - Enable / Disable the display of the predefined timers. If you have multiple devices you synchronise your timer definitions between devices using iCloud (if available). In the free version of the app you can add a timer with 5 steps, and there are some predefined timers and a small set of color schemes. In the paid version you can have as many timers as your device allows, each with unto 50 steps, additional predefined timers are available and an expanded range of color schemes.

About

Thirty Five mm

Features
Read full description

A toolbox for photographers shooting with and developing film on their own. It provides utilities for developing, metering or remembering locations to shot.

Screenshots

Film Process Timer4 screens
Thirty Five mm4 screens

Verdict

The call

The clearest difference is in-app purchases: Thirty Five mm at none against Film Process Timer's 1. Thirty Five mm also leads on update cadence (every 3 weeks vs every 6 weeks). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Film Process Timer sells 1 one-off in-app purchase. Thirty Five mm asks for nothing beyond the download.

UpkeepUpdate frequency

Film Process Timer ships an update every 6 weeks, Thirty Five mm every 3 weeks. The most recent releases landed on June 1, 2026 and December 13, 2025 respectively.

Scorecard2 real differences · 8 level
Film Process Timer versus Thirty Five mm: the parameters behind the verdict, then further details
ParameterFilm Process TimerThirty Five mm
PriceFreeFree
Rating2.5 (2 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings2 — better—
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.6
Further details — not scored
Size2 MB36 MB
Age rating4+4+
DeveloperAndrzej ZawadzkiJan Loehr

In-app purchases

1 purchases

Film Process Timer

One-time1
  • Unlock features$3.99
None

Thirty Five mm

No in-app purchases

Questions

Is Film Process Timer free?
Film Process Timer is free to download, with in-app purchases available.
Is Thirty Five mm free?
Thirty Five mm is free to download, with no in-app purchases.
Do Film Process Timer or Thirty Five mm have ads?
Neither Film Process Timer nor Thirty Five mm shows ads.
Which is updated more often, Film Process Timer or Thirty Five mm?
Film Process Timer ships an update every 6 weeks, and Thirty Five mm every 3 weeks. Most recently, Film Process Timer was updated on June 1, 2026 and Thirty Five mm on December 13, 2025.

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