Darkroom Clock vs SmartLab35
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Darkroom Clock
This app provides a customizable timer for film and photo development, allowing users to create unique development recipes. It features a darkroom-safe mode, a clear display, and a full-screen start/stop button for ease of use. Receive notifications if a timer is running when you leave the app.
- Configurable development recipes
- Darkroom mode for B&W paper
- Clear information display
- Full screen start/stop button
- Running timer notifications
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Darkroom Clock is a flexible darkroom timer app suitable for both film and photo development. Build your own development recipes with separate timers for each stage of your development process. The app includes - fully configurable development recipes. - darkroom mode (safe to use with B&W photographic paper). - clear display with all the information you need. - the whole screen is the start/stop button for the timers - notifications if you leave the app while a timer is still running Also the app is free so there is no reason to not download it.
SmartLab35
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With the innovative photo enlarger, you can create prints from your film negatives in a completely new way. This is possible for colour and black and white photos. In black and white mode, you can set an exposure time of up to 999 seconds. You can set the intensity of the enlarger to up to -4.0 f-stops. For multi-grade paper, you can select the gradation from 00.0 to 5.0. Use the function buttons to control the enlarger. Use the FOCUS light to adjust the sharpness of your image. Use the SAFE light to insert the paper. Start and pause the exposure with the centre button. In colour mode, you can set an exposure time of up to 999 seconds. You can control the colour gradation of your image by setting the intensity of the individual colour channels. In the options menu, you can choose between CMY and RGB colour systems. Control the enlarger with the function buttons. You can use the FOCUS light to adjust the sharpness of your image. Start and pause the exposure with the centre button.
Screenshots
Verdict
The clearest difference is update cadence: SmartLab35 at every 5 weeks against Darkroom Clock's every 3 months. Darkroom Clock's advantage is iOS requirement (11.0 vs 16.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Darkroom Clock ships an update every 3 months, SmartLab35 every 5 weeks. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.
| Parameter | Darkroom Clock | SmartLab35 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (84 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 84 — better | — |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 7 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Adam Fowler | SANTIAGO FRANCISCO RAMIREZ SONNTAG |
In-app purchases
Darkroom Clock
No in-app purchases
SmartLab35
No in-app purchases
