Master One vs CountCal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Master One
This app guides you in building habits by focusing on one at a time. You can set custom durations, track your progress and streaks, and review your completed habits. It offers a clean, distraction-free interface with options to archive or restart habits.
- One habit focus
- Custom habit durations
- Streak and history tracking
- Mastered habits archive
- Minimalist design
- Archive and restart habits
- Strict mode for perfect streaks
Read full descriptionHide full description
Master One helps you focus on building habits one at a time. Set your own duration, track streaks, update your progress, and celebrate every success. Features: ◆ One Habit at a Time: Simplify your focus for better results. ◆ Custom Durations: Choose how long to work on each habit. ◆ Streak & History Tracking: Monitor progress, edit past entries, and stay on track. ◆ Mastered Habits: Reflect on your growth with a list of completed habits. ◆ Clean, Minimal Design: Beautiful, simple, and distraction-free. ◆ Archive & Restart – Pause habits anytime and pick them up later. ◆ Strict Mode – Only count progress with perfect streaks—no gaps allowed. ◆ Themes – Personalize your experience with different styles.
CountCal
Read full descriptionHide full description
CountCal is a calendar-based date log for work, life events, and equipment or service-use days. Tap the dates that matter, see your totals, and keep track of day limits in one place. WORK & TRAVEL Record work-from-home days, office attendance, business trips, annual leave, and PTO. Review your days by week, month, year, or a custom date range. LIFE EVENTS & BIG DAYS Keep a personal log of movie days, gym days, big meals, nights with friends, and other memorable occasions. Start with the Fitness template or create a project with your own name, color, and icon. EQUIPMENT & SERVICE USE Remember which dates you used a car, tools, shared equipment, or a service. Count usage days against a day-based allowance, or track them without a limit. Each project counts a calendar date once; it does not count multiple sessions within the same day. RECORD QUICKLY, REVIEW CLEARLY • Record today from Home, fill in past dates, or mark future plans. • Select a date in Calendar to see your active projects and open the relevant record. • Open Insights from Home and switch projects, or review the period you are browsing from the recording page. • Compare recorded days, future plans, weekday patterns, and period progress. TOTALS, LIMITS & REMINDERS • Choose weekly, monthly, yearly, or fixed custom periods. • Set an optional day limit and see used, remaining, and over-limit totals. • Future dates are plans and count toward the period allowance; historical patterns use days that have already occurred. • Keep recording even after a limit is exceeded. • Set date reminders or remaining-days reminders. REPORTS & EVERYDAY ACCESS Create a report image and choose whether to hide project names, dates, and future plans before sharing. Use iPhone and iPad widgets and Shortcuts to open a project, record today, or view remaining days. The Record Today widget opens CountCal to complete the action. Apple Watch provides another way to record and review your days. YOUR RECORDS, YOUR DEVICES Core tracking works offline. When iCloud is available, projects and records can sync through your private iCloud database. Notification permissions and schedules are managed on each device. Archive projects or export the data visible on your device as JSON. No developer account, subscription, or in-app purchase is required for this release. CountCal is for personal recordkeeping, not proof of tax, visa, medical, or employment compliance.
Screenshots
Verdict
The clearest difference is in-app purchases: CountCal at none against Master One's 1. CountCal also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and iOS requirement 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. Master One sells 1 one-off in-app purchase. CountCal asks for nothing beyond the download.
Master One ships an update every 2 months, CountCal every 2 weeks. The most recent releases landed on September 24, 2026 and September 28, 2026 respectively.
| Parameter | Master One | CountCal |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Mary Ogawa | Youru Tan |
In-app purchases
Master One
- LIFE_PURCHASE$0.99
CountCal
No in-app purchases









