Comparison

dayLime vs f/oss

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

Head to head
About

dayLime

Features
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Keep important dates in view with dayLime day counter and countdown widgets. Stamp the date, time and D-day on photos as you shoot with the timestamp camera. Match your angle with ghost mode and turn your photos into a timelapse. 1. Count days from or until a date See elapsed days as D+N or remaining days as D-N. Use this day counter app for exams, travel, anniversaries or days together. For a SAT countdown, set your own test date to count the days left. Add a D-day countdown widget or a sticky note widget to your home screen. Put a D-day widget on your Lock Screen, too. There are five slots: slots 1 and 2 are free; slots 3, 4 and 5 require a premium purchase. 2. Stamp the moment you take a photo Turn on the date, time and D-day you want to show in the timestamp camera. Those values are stamped on the photo at capture. Choose from seven date formats and three time formats. Style the D-day label with text frames, and choose from six photo frame options, including Retro Date Stamp. Your photo timestamp can show both when you took the picture and the day count. 3. Keep your angle and watch progress Ghost mode overlays the latest photo in your current record as a translucent guide. Match your pose and framing for fitness progress photos or a diet record. With at least two record photos, make a photo timelapse MP4 in one tap. The timelapse is saved as a video to the Photos app and is ready to share right away. Try the same angle for baby, pet or plant growth. 4. Share a card by link Make a collage, calendar or sticky note wall card. For collages and calendars, choose original photos, blurred photos or numbers only. Numbers only uses no photos; a collage with this option becomes a calendar of numbers. The sticky note wall has no photos or privacy choices. Choose a link duration of one day, one week, 30 days or no expiry. 5. Make it part of your day Post-workout photos: stamp the date and time after your session. Fitness progress photos: match your last pose to record body changes. SAT: set your own test date in your day counter app and follow the days left. Couple anniversaries: count days together and put the day count on a photo. Travel: use a countdown widget before departure, then photograph the trip. Baby, pet and plant growth: keep an angle as your subject grows. 6. Before you start You cannot add new stamps to existing photos. Take photos with the timestamp camera to stamp the moment. Contains ads and in-app purchases for additional slots.

About

f/oss

Features
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f/oss is a free light meter for film photography, rebuilt from the ground up as a fully native app. Point the spot-metering circle at your subject and read the exposure instantly. f/oss measures true photometric luminance through your iPhone's camera and is calibrated against professional reference meters. FIVE METERING MODES • Aperture Priority: set f-stop and ISO, get your shutter speed • Shutter Priority: set shutter and ISO, get your f-stop • Exposure Value: read the scene's EV directly • Cine: shutter angle and frame rate for filmmakers • Manual: check your chosen settings against the metered scene BUILT FOR REAL CAMERAS • Camera profiles: save your bodies with their actual shutter and bias limits • Full, half or third stop increments • Configurable shutter, aperture, ISO and exposure bias ranges • Reference lock: freeze a reading and measure scene contrast in stops • Exposure lock for recompose workflows ACCURATE • True spot metering of exactly the circle you see • Full-color light analysis: reads saturated LED and neon light correctly • Verified against professional meters from daylight to low light FREE, NO SUBSCRIPTION Every feature is free, forever. If f/oss saves your shots, there is an optional tip jar.

Screenshots

dayLime4 screens
f/oss3 screens

Verdict

The call

The clearest difference is ads: f/oss at none against dayLime's shown. dayLime's advantage is iOS requirement (17.6 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. dayLime sells 5 one-off in-app purchases and f/oss sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

dayLime ships an update every 5 days, f/oss every 6 days. The most recent releases landed on October 22, 2026 and October 13, 2026 respectively.

Scorecard2 real differences Ā· 4 level
dayLime versus f/oss: the parameters behind the verdict, then further details
ParameterdayLimef/oss
PriceFreeFree
Update frequencyEvery 5 days — betterEvery 6 days
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better26.0
Further details — not scored
Size29 MB1 MB
Age rating4+4+
Developerķ¬ķ…Œģ“ķ† ķ¬ėž˜ķ”„ķŠøLuca Tescari

In-app purchases

5 purchases

dayLime

One-time5
  • Slot 3 Only$0.99
  • Slot 5 Only$0.99
  • Slot 4 Only$0.99
Show 2 more
  • Unlock Remaining Slots(4&5)$1.49
  • Unlock All Slots (3~5)$1.99
3 purchases

f/oss

One-time3
  • Nice Tip$1.99
  • Generous Tip$5.99
  • Amazing Tip$9.99

Questions

Is dayLime free?
dayLime is free to download, with in-app purchases available.
Is f/oss free?
f/oss is free to download, with in-app purchases available.
Do dayLime or f/oss have ads?
dayLime shows ads; f/oss does not.
Which is updated more often, dayLime or f/oss?
dayLime ships an update every 5 days, and f/oss every 6 days. Most recently, dayLime was updated on October 22, 2026 and f/oss on October 13, 2026.

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