Comparison

Whendy Fast Time Planner vs Plinth Priority Matrix

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

Head to head
About

Whendy Fast Time Planner

This app helps you avoid being late by calculating when to start each task for an event. Simply input your target completion time and the duration of each step, and it will provide a clear schedule.

Highlights
  • Calculate start times backwards from a target time
  • Input task durations
  • View start and end times for each step
  • Import events from calendar (Premium)
  • Export activities to calendar (Premium)
  • Share plans as formatted text
Features
Read full description

When should you get started? Just ask Whendy. No more time math: Start with a target time and then work your way back. It’s that simple! Time math is hard Do you sometimes get started too late? Ever arrived late to an appointment? Almost missed a flight? Or unnecessarily waited at the gate for hours? Sometimes you know when you need to be done, and you know how long each step takes. But it’s hard to do the math in your head and know when to start. Whendy makes it easy! Why Whendy? For many daily tasks, a proper project planner is overkill, a calendar seems clumsy, and a to-do list won’t tell you when. Whendy is a simple, clean, text-based way to plan out when to start each needed activity to arrive on time for your crucial event. It’s easy to make a plan Check out the screenshots and you’ll get it right away. Just type in your target time (when will your flight board?), and list the durations of steps before (from airport to gate 90 min, get parking 45 min, …, pack 60 min). Done! Whendy tells you when each step will begin and end, and when to start with step 1. Is Whendy for you? • Are you frustrated by time math where you are adding or subtracting times? • Do you like the effectiveness of a to-do list? • Do you like to keep it simple yet well thought-through? Then yes, Whendy is for you! *Whendy Premium*  • import events from your calendar. Quickly start a new plan without typing in the starting or ending time • export activities back to your calendar.  Premium is free for the first couple of uses so you can try it out without committing to anything. Additional ways to use Whendy Find out when you’ll be done • Type in "now" to insert the current time • Add tasks + durations • See when each step will begin and end, and when you’ll be done with everything Create a meeting agenda • Type in start time + duration of each segment • Done! Can we squeeze it in • You already have a plan for the day but new tasks pop up • Draft out your day to help you prioritize Share your plans • Send your plan as a nicely formatted text • Your friend or partner can stick to your mutual plan Created with love Whendy has been crafted with care. Hannes, its sole developer, has spent years refining it in daily use, before deciding to share it with you. It has helped with getting to countless appointments on time, juggling family life and chores as well as making the best use of weekends considering all family members’ needs.

About

Plinth Priority Matrix

Features
Read full description

Too many tasks, not enough clarity? Plinth cuts through the noise by sorting every item into the four Eisenhower quadrants — so you always know exactly what deserves your attention right now. — KEY FEATURES — • 2x2 Matrix View — see all four quadrants (Do, Schedule, Delegate, Delete) at a glance as a color-coded grid, with up to five tasks previewed per quadrant. • Quick-Add from Any Quadrant — tap the Add button inside any quadrant card to create a task already sorted to the right place. • Task Notes — attach optional notes to any task to capture context alongside the title. • Completion Tracking — check off tasks with a single tap; completed items are struck through and moved out of your focus. • Today View — surfaces your top five Do-quadrant tasks (urgent and important) so you can open the app and start working immediately. • Full Task List — browse every task across all quadrants in one flat list, filter by quadrant, and swipe to delete anything you no longer need. • Priority Ordering — tasks within each quadrant are sorted by the order you added them, keeping the most important items at the top. • Fully Offline — all data is stored locally on your device using UserDefaults. No account, no ads, no cloud sync required. Plinth is built for anyone who needs a fast, structured way to decide what to work on — whether you are managing a team, building a product, studying, or navigating daily life. Open the matrix, place your tasks, and get back to doing the work that matters. — Plinth Priority Matrix PREMIUM — Premium unlocks the full Plinth experience: unlimited tasks across all four quadrants, drag-and-drop reprioritization, the Today view, and a completely ad-free, fully private workspace — so nothing stands between you and your priorities. Subscription options: • Weekly — $9.99 / week • Yearly — $49.99 / year (includes a 3-day free trial) Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pnkl26.web.app/privacy-policy

Screenshots

Whendy Fast Time Planner4 screens
Plinth Priority Matrix3 screens

Verdict

The call

Whendy Fast Time Planner and Plinth Priority Matrix are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Whendy Fast Time Planner sells 1 one-off in-app purchase and Plinth Priority Matrix sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Whendy Fast Time Planner ships an update every 3 weeks, Plinth Priority Matrix fortnightly. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

ScorecardNo meaningful differences
Whendy Fast Time Planner versus Plinth Priority Matrix: the parameters behind the verdict, then further details
ParameterWhendy Fast Time PlannerPlinth Priority Matrix
PriceFreeFree
Rating4.8 (11 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperHannes OudLinh Phan Nhat Khanh

In-app purchases

1 purchases

Whendy Fast Time Planner

One-time1
  • Premium$3.99
2 purchases

Plinth Priority Matrix

Subscriptions2
  • Plinth Priority Matrix Weekly$9.997 Days
  • Plinth Priority Matrix Yearly3 Days trial$49.991 Year

Questions

Is Whendy Fast Time Planner free?
Whendy Fast Time Planner is free to download, with in-app purchases available.
Is Plinth Priority Matrix free?
Plinth Priority Matrix is free to download, with in-app purchases available.
Do Whendy Fast Time Planner or Plinth Priority Matrix have ads?
Neither Whendy Fast Time Planner nor Plinth Priority Matrix shows ads.
Which is updated more often, Whendy Fast Time Planner or Plinth Priority Matrix?
Whendy Fast Time Planner ships an update every 3 weeks, and Plinth Priority Matrix fortnightly. Most recently, Whendy Fast Time Planner was updated on September 8, 2026 and Plinth Priority Matrix on September 14, 2026.

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