Comparison

DisparaTimer vs DevelopFilm

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

Head to head
About

DisparaTimer

Features
Read full description

DisparaTimer is a mobile app that, when connected to a Raspberry Pico W/WH, can control the exposure time of a photographic enlarger using a power relay. The physical setup is inexpensive and easy to assemble. DisparaTimer has two operation modes. The first is a traditional timer mode, where you set a specific time for each exposure. The second is designed for creating test strips with constant fractional step increments over a base time. On iPad (iPadOS 17 and later), DisparaTimer includes a landscape-only notes panel that lets you add photos or images of your test strips and make handwritten or visual annotations directly on them.

About

DevelopFilm

This app is a pocket darkroom companion for black-and-white film development. It offers official developing times, a smart timer with agitation guidance, and full process control. Track your film details and parameters in a built-in journal to refine your workflow and achieve consistent results.

Highlights
  • Official developing times database
  • Smart timer with agitation guidance
  • Full process control adjustments
  • Built-in film roll journal
  • Quick custom timer
  • Darkroom-ready minimal interface
Features
Read full description

Your pocket darkroom for black-and-white film. DevelopFilm is a complete darkroom companion designed to help you develop film with confidence — whether it’s your first roll or your hundredth. Official developing times: Access precise data from manufacturer datasheets for Adox, Bergger, Foma, Fujifilm, Ilford, Kentmere, Kodak, Rollei, and more. The library is continuously expanding. Smart timer with agitation guidance: Run a clean dual-phase timer for developing and fixing, with built-in agitation reminders and visual alerts. Full process control: Adjust by temperature, developer reuse, push/pull stops, processing vessel, fixer, stop bath, toners, and more — everything that affects your final look. Built-in journal: Keep track of every roll. Save your film details, developing parameters, notes, and photos so you can repeat your best results or refine your workflow. Quick Timer: Need flexibility? Set a custom time and start developing instantly. Darkroom-ready design: A minimal, dark-mode interface that stays readable under safe lights and keeps you focused on the process. Whether you’re new to film developing or refining your craft, DevelopFilm helps you stay consistent, learn faster, and enjoy every step of the process. Upgrade to Darkroom Pass to unlock pro features like push/pull adjustments, fixer timer, and photo journaling. Terms of Use: mirnijatom.github.io/terms.html Privacy Policy: mirnijatom.github.io/privacy.html

Screenshots

DisparaTimer4 screens
DevelopFilm4 screens

Verdict

The call

The clearest difference is in-app purchases: DisparaTimer at none against DevelopFilm's 3. DisparaTimer also leads on iOS requirement (15.5 vs 26.0). DevelopFilm's advantage is update cadence (every 11 days vs monthly). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DevelopFilm sells 3 in-app purchases, starting at $2.99 per month. DisparaTimer asks for nothing beyond the download.

UpkeepUpdate frequency

DisparaTimer ships an update monthly, DevelopFilm every 11 days. The most recent releases landed on June 5, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 7 level
DisparaTimer versus DevelopFilm: the parameters behind the verdict, then further details
ParameterDisparaTimerDevelopFilm
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyMonthlyEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better26.0
Further details — not scored
Size2 MB24 MB
Age rating4+4+
DeveloperAngel David RodriguezAleksandrs Bertulis

In-app purchases

None

DisparaTimer

No in-app purchases

3 purchases

DevelopFilm

Subscriptions2
  • Darkroom Pass Monthly7 Days trial$2.991 Month
  • Darkroom Pass Yearly7 Days trial$17.991 Year
One-time1
  • Lifetime Pro$34.99

Questions

Is DisparaTimer free?
DisparaTimer is free to download, with no in-app purchases.
Is DevelopFilm free?
DevelopFilm is free to download, with in-app purchases available.
Do DisparaTimer or DevelopFilm have ads?
Neither DisparaTimer nor DevelopFilm shows ads.
Which is updated more often, DisparaTimer or DevelopFilm?
DisparaTimer ships an update monthly, and DevelopFilm every 11 days. Most recently, DisparaTimer was updated on June 5, 2026 and DevelopFilm on September 6, 2026.

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