OneTask ADHD Focus Timer vs SketchCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OneTask ADHD Focus Timer
This app helps individuals with ADHD focus on completing one task at a time. It features a simple interface with a timer, streak tracking, and a brain dump function to manage overwhelming to-do lists. The goal is to encourage task completion and reduce procrastination.
- Single task focus
- Time blindness solution
- Streak tracking
- Brain dump for task management
- Mascot encouragement
- Ad-free experience
Read full descriptionHide full description
Stop juggling. Start finishing. OneTask is for ADHD brains with 47 tabs open and nothing done. No folders. No tags. No priority matrix. Just one task, a timer, and the satisfaction of actually getting something done. BRAIN DUMP - Get everything out of your head Type out every task weighing on you. No judgment, no organizing. Then pick ONE and start the timer. BUILT FOR ADHD MINDS - One task visible at a time (no overwhelming lists) - Timer that makes time feel real (time blindness? solved) - Streak tracking for dopamine hits - Brain dump to beat task paralysis - Mascot (Bit) cheers you on FREE FOREVER - 1 focus session per day, always free - 7-day full Pro trial, no payment needed PRO UNLOCKS - Unlimited sessions - Full history & insights - Streak freeze protection - Unlimited brain dumps Finally finish something today. You don't need another planner. You need to finish one thing today. OneTask is for people who are done planning and ready to execute. One task at a time. Subscription Pricing: - $4.99 / month - $29.99 / year Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of Use: https://www.apptodesign.com/onetask/terms/ Privacy Policy: https://www.apptodesign.com/onetask/privacy/ PRIVACY Your tasks stay on your device and in your iCloud. No ads. No tracking. No data selling. PHILOSOPHY Do less. Finish more.
SketchCalc
Read full descriptionHide full description
SketchCalc combines a scientific calculator, a visual math notebook and a bill splitter in one workspace. Calculate, graph, sketch and organize your ideas directly on the page. No account is required for the core notebook. **SCIENTIFIC CALCULATOR & LINKED MATH** Work with fractions, percentages, powers, roots and trigonometric expressions. Connect calculations so dependent results can update when source values change. Explore supported algebra and step-by-step math solutions. **GRAPHS, SLIDERS & VISUAL NOTES** Plot functions, adjust values with sliders and keep graphs beside calculations. Add handwritten notes, pencil sketches, shapes and diagrams to build a readable visual record of your work. **BILL SPLIT & RECEIPT SCANNING** Divide restaurant bills and shared expenses. Add items and people, assign purchases, and account for tax, tips, service charges and discounts. Where supported, scan a receipt to help enter the bill. Always review recognized amounts before splitting. **SCAN & SOLVE** Capture or select an image containing supported math expressions. Review recognized symbols, explore available solution steps and add supported results to your notebook. Recognition and calculation are handled locally on your device. **SAVE & EXPORT** Keep your pages and project files on your device. Reopen your work and export supported content, including PDF. Some export formats and advanced tools require PRO or a rewarded unlock. **FREE & PRO** The Free version includes a first notebook page with up to 10 rows. Completing a rewarded ad can unlock a second 10-row page for 48 hours; its saved content remains on your device after the unlock expires. Selected advanced tools and Bill Split have separate rewarded access limits. Rewards are granted only after an ad is completed. SketchCalc PRO is a one-time purchase that removes ads and unlocks expanded pages, rows and tools. Availability of scanning and advanced calculations may vary by device and operation. Check important calculations and recognized text before relying on them.
Screenshots
Verdict
The clearest difference is ads: OneTask ADHD Focus Timer at none against SketchCalc's shown. OneTask ADHD Focus Timer also leads on update cadence (weekly vs every 2 weeks). SketchCalc's advantage is iOS requirement (15.0 vs 18.6). On price, 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. OneTask ADHD Focus Timer sells 2 in-app purchases, starting at $4.99 per month and SketchCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
OneTask ADHD Focus Timer ships an update weekly, SketchCalc every 2 weeks. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.
| Parameter | OneTask ADHD Focus Timer | SketchCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | QUANTUMPARADOX STUDIO PRIVATE LIMITED | OZGUN EVREN ERTURK |
In-app purchases
OneTask ADHD Focus Timer
- Monthly Focus · Gentle Focus Plan$4.991 Month
- Yearly Focus · Gentle Focus Plan$29.991 Year
SketchCalc
- SketchCalc Pro$8.99
Questions
Is OneTask ADHD Focus Timer free?
Is SketchCalc free?
Do OneTask ADHD Focus Timer or SketchCalc have ads?
Which is updated more often, OneTask ADHD Focus Timer or SketchCalc?
Other comparisons















