Comparison

Pdf Studio vs SinceWhen

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

Head to head
About

Pdf Studio

Features
Read full description

Listen and read books and great stories together with Pdf Studio. Now you can listen to a good book even when you can’t pick one up—on your commute to work, when training at the gym, while folding laundry, when traveling or any other time. It's always good and more interactive when you listen what you read. Pdf Studio App is very useful for reading novels, ebooks, syllabus books, etc... Pdf Studio makes any time a story time with great audible functionality of reading pdfs. Pdf Studio is fastest, smallest and simplest of all its kind. Why use Pdf Studio? 1. Listen with text 2. Makes your pdf audible 3. Change Language anytime 4. Jump directly to a particular page 5. Play and pause anytime 6. Full screen view for easy reading 7. Change text size as per your need

About

SinceWhen

Track the time elapsed since important events, from personal care to home maintenance. Get gentle reminders for when things are due next, with smart predictions based on your logging habits. Designed for real life, it offers a private and guilt-free way to manage recurring tasks.

Highlights
  • Log events with one tap
  • Smart predictions for due dates
  • Widgets for Home and Lock Screen
  • Siri and Shortcuts integration
  • Multi-day event tracking
  • Calendar and chart visualizations
  • Private by design, no account needed
Features
Read full description

Not everything is a daily habit. SinceWhen tells you how long it's been since the last haircut, oil change, vet visit, or dose, and when it's likely due next. One tap to log. No streaks. No guilt. No account. HOW IT WORKS • Name something you do now and then • Tap to log it, from the app, a widget, your Lock Screen, or Siri • SinceWhen learns your rhythm and shows what's due BUILT FOR REAL LIFE • Home & car: AC filters, oil changes, smoke detectors, deep cleans • Plants & pets: watering, fertilizing, flea treatments, vet visits • Health & self-care: as-needed medication, vitamins, skincare, dentist • Life admin: haircuts, calling family, reviewing subscriptions • ADHD-friendly: a zero-shame history for time blindness SMART, GENTLE PREDICTIONS SinceWhen studies the gaps between your logs and says things like "Usually every 6 weeks" and "Expected tomorrow". Pattern aware skips one-off long gaps, like a week away, and follows your real routine. Optional nudges arrive only when something is actually due, and you can log straight from the notification. MULTI-DAY EVENTS Tap once to start, tap again to end. Trips, sick days, and cycles are counted as Day 1, Day 2, and so on, with the full duration shaded on your charts. LOG IT IN SECONDS • Home Screen and Lock Screen widgets • Undo an accidental tap right where you made it • Siri and Shortcuts: "Hey Siri, log haircut" • Add a note, or backdate a log in a couple of taps EVERYTHING AT A GLANCE • Calendar with a ring on the next expected day • Interval and monthly charts • Categories with their own insights • Pause an event while you're away so predictions stay honest • Grid or list, pin what matters, dark mode, iPhone and iPad PRIVATE BY DESIGN No accounts, no ads, no analytics. Your timeline stays on your device and in your own iCloud. Export everything as JSON any time. FREE TO START Your first 3 events are free forever with every core feature. SINCEWHEN PRO Unlimited events, iCloud sync and backup, Siri and Shortcuts, and JSON export. • Monthly and Yearly: Family Sharing included • Lifetime: pay once, own it forever (Family Sharing not included) Available in English, German, Japanese, Spanish, French, Portuguese, Korean, and Italian. Privacy Policy: https://devapt.com/sincewhen/privacy Terms of Use: https://devapt.com/sincewhen/terms

Screenshots

Pdf Studio4 screens
SinceWhen4 screens

Verdict

The call

The clearest difference is in-app purchases: Pdf Studio at none against SinceWhen's 3. Pdf Studio also leads on iOS requirement (15.5 vs 17.6). SinceWhen's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price 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. SinceWhen sells 3 in-app purchases, starting at $4.99 per month. Pdf Studio asks for nothing beyond the download.

UpkeepUpdate frequency

Pdf Studio ships an update every 3 weeks, SinceWhen weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Pdf Studio versus SinceWhen: the parameters behind the verdict, then further details
ParameterPdf StudioSinceWhen
PriceFreeFree
Rating—4.4 (14 ratings) — better
Positive reviews—87.5% of reviews
Number of ratings—14 — better
Update frequencyEvery 3 weeksWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better17.6
Further details — not scored
Size57 MB12 MB
Age rating4+4+
DeveloperSatyam SahuBasharath Shaik

In-app purchases

None

Pdf Studio

No in-app purchases

3 purchases

SinceWhen

Subscriptions2
  • SinceWhen Pro + Family (Monthly)$4.991 Month
  • SinceWhen Pro + Family (Yearly)$19.991 Year
One-time1
  • SinceWhen Pro (Lifetime)$39.99

Questions

Is Pdf Studio free?
Pdf Studio is free to download, with no in-app purchases.
Is SinceWhen free?
SinceWhen is free to download, with in-app purchases available.
Do Pdf Studio or SinceWhen have ads?
Pdf Studio shows ads; SinceWhen does not.
Which is updated more often, Pdf Studio or SinceWhen?
Pdf Studio ships an update every 3 weeks, and SinceWhen weekly. Most recently, Pdf Studio was updated on October 25, 2026 and SinceWhen on October 31, 2026.

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