Predy vs rotate by RotationOS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Predy
This app helps you overcome procrastination and build consistent work habits. It focuses on making starting easy, keeping motivation high, and visualizing your progress. Designed for those who struggle with task management, it turns effort into visible achievement.
- Project-based task management
- Work tracking with timers and Pomodoro
- StudyWithMe focus mode
- AutoPilot for easy task initiation
- Streak bonuses and productivity rankings
- Progress analytics and prediction training
- Goal estimation and feedback
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Predy is a study timer and planner that helps you start studying, stay consistent, and make your progress visible. Use a study timer, Pomodoro, stopwatch, or manual entry to track learning time and build a routine that lasts. In Predy, goals are organized as projects, with tasks and work logs contained within them. Tasks can be managed by project, priority, deadline, and estimated time, preventing work from becoming scattered. Because all work logs are tied to projects, progress accumulates automatically, making it easy to see where you stand. Estimating required time in advance also helps users realistically understand what it will take to reach deadlines, reducing failed plans. The first problem Predy tackles is “not being able to start.” Work tracking supports Timer, Pomodoro, Stopwatch, and manual entry, allowing flexible use depending on the task and mental state. StudyWithMe mode further lowers the barrier by creating a focus-friendly atmosphere with immersive visuals and ambient sounds. On days when starting feels hardest, AutoPilot is especially effective. With one tap, a 2-minute timer begins alongside a simple starter action, such as tidying your desk. After that, you naturally move into a focused 20-minute session. This uses behavioral activation—you don’t start because you’re motivated; you get motivated because you started—minimizing resistance and building momentum naturally. Predy is also designed to make you want to continue. Daily login and task completion bonuses grow with streaks, while rankings visualize productivity through multiple metrics such as project completions, focus level, efficiency, total work time, and consecutive days. Even “just one minute today” feels meaningful, often leading to longer sessions. Consistency is supported not by grit, but by structure. Progress is clearly visible through analytics that show work volume and time for today, this week, and this month. Seeing effort accumulate creates a sense of achievement and naturally leads to “Maybe I’ll do a little more.” Predy’s core differentiator is Prediction. Before working, users estimate how long a task will take and compare it with the actual result. Feedback at project completion helps clarify why estimates were off. Repeating this process improves planning accuracy, reducing deadline overruns. Predy doesn’t just manage tasks—it trains how to plan. Predy isn’t only for your best days. It’s for people who tried task management apps many times and couldn’t keep going. By lowering the barrier to starting, creating reasons to continue, and leaving visible proof of effort, Predy helps users try again. From “I have to push myself” to “I’ve already moved forward.” Predy is designed to make that state part of everyday life. Privacy Policy → https://team-app-dev.com/predy/privacy/ Terms of Use → https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
rotate by RotationOS
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Your life doesn't run Monday to Friday. Your planning tools shouldn't either. rotate is built specifically for rotational workers whose schedules, travel, time at home, and pay all revolve around their rotation. PLAN YOUR ROTATION Set up your work and home pattern, travel days, locations, and time zones. rotate builds your calendar automatically and keeps projecting your rotation into the future. View your schedule by year, month, week, or day so you can see when you're working, traveling, and home. PLAN AROUND YOUR PAY Connect your rotation to your pay structure to forecast upcoming paychecks. Support fixed, rule-based, and custom pay dates, location bonuses, travel pay, per diem, and estimated tax. Use Paycheck Planner to compare your projected paycheck with what you actually expect to receive. SHARE A ROTATION Connect with your back-to-back and create an agreed Shared Rotation without exposing your private financial information. Propose schedule changes, counter, accept or decline changes, keep track of days owed, and receive notifications when something needs your attention. KEEP THE REST OF YOUR LIFE IN VIEW Track important time zones, count days spent in a country, record work expenses, and plan further ahead than a traditional work calendar allows. PRIVATE BY DESIGN Your personal rotation and financial planning data stay on your device. Shared Rotation only shares the schedule information needed between connected users. rotate is powered by RotationOS, software designed around the way rotational workers actually live and work. Privacy Policy: https://rotationos.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: rotate by RotationOS at none against Predy's shown. Predy's advantage is update cadence (every 2 days vs every 5 days) and device support (3 vs 1). On price, in-app purchases 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. Predy sells 3 in-app purchases, starting at $4.39 per month and rotate by RotationOS sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Predy ships an update every 2 days, rotate by RotationOS every 5 days. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.
| Parameter | Predy | rotate by RotationOS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 days — better | Every 5 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 342 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | GO SHIMIZU | RotationOS LLC |
In-app purchases
Predy
- Predy Premium7 Days trial$4.391 Month
- Predy Premium7 Days trial$36.491 Year
- Predy$53.99
rotate by RotationOS
- rotate Plus$2.991 Month
- rotate Pro$5.991 Month









