OneTask vs OpenPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneTask
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OneTask helps you focus on a single task at a time — no lists, no clutter, no distractions. HOW IT WORKS Add the task you want to work on right now. The timer starts automatically. When you're done, tap Done — and your task is logged to history. FEATURES - One-task focus mode — keeps your attention on what matters - Built-in elapsed timer — see how long you've been working - Task history — review everything you've completed with timestamps - Timer reminder — get a gentle nudge after 25 minutes (adjustable) - Haptic feedback — feel a subtle confirmation when a task is complete - Fully offline — no account, no sync, no internet required DESIGNED FOR SIMPLICITY No dashboards. No recurring tasks. No widgets to configure. Just you and the one thing you need to do right now. Perfect for study sessions, deep work, household tasks, or anything that deserves your full attention.
OpenPDF
Convert images to PDF, sign documents, and share them directly from your device. This app prioritizes user privacy by keeping all data local and requiring no account or tracking. Enjoy a clean, ad-free experience for all your PDF needs.
- Image to PDF conversion
- Sign documents
- Send PDFs
- Data stays on device
- No ads
- No account required
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OpenPDF is a lightweight, sleek, and professional PDF editor with no log-in and keeps all your data on your device. I made this app after getting frustrated with PDF editor apps packed with ads, subscriptions, and pay-walled features. Why you'll love OpenPDF: - Easy image to PDF conversion - Send your PDFs all from the app - Easily sign documents - All of your data stays on your device - No ads. - No account required. - No tracking.
Screenshots
Verdict
The clearest difference is in-app purchases: OneTask at none against OpenPDF's 3. OneTask also leads on iOS requirement (17.0 vs 26.0). 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
Both are free to download. OpenPDF sells 3 one-off in-app purchases. OneTask asks for nothing beyond the download.
| Parameter | OneTask | OpenPDF |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (8 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | — | Every 8 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Daria Permenova | Jason Kalili |
In-app purchases
OneTask
No in-app purchases
OpenPDF
- Quick Thanks$4.99
- Support OpenPDF$9.99
- Keep It Going$19.99
