Left vs On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Left
This app helps you visualize and manage your limited time through habit tracking, countdowns, and a daily planner. It offers features like Pomodoro timers and fasting tools to enhance productivity and awareness of your time.
- Time visualization (year, month, week, day, hour)
- Habit tracking with streaks and reminders
- Countdown timers for future events
- Integrated daily planner
- Pomodoro focus timer
- Fasting tool
- Widgets for Home Screen and Dynamic Island
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Left is a time-awareness app built on one idea: your time is limited, and seeing it changes how you use it. Left turns time into something you can see, then helps you act on it with habits, streaks, countdowns, and a planner for your day. TIME LEFT See where you are in the year, month, week, day, hour, and your life. Each unit is a symbol; the past dims, what remains stays in view. Your life in weeks, year progress, and life progress, made tangible. Choose dots, symbols, colors, and layouts. A quiet, honest way to face limited time without it becoming morbid. HABITS, STREAKS & AIMS Left is a habit tracker for the person you are trying to become. Build habits on any schedule: daily, several times a day, weekly, monthly, or custom. Track streaks and protect them, count the days since anything that matters, and set reminders so nothing slips. And you don't have to do it alone: share a habit or streak with a friend, keep each other accountable, and send kudos, cheers, and encouragement when it counts. With aims, you have a flexible goal tracker for anything you can count, helping you build up or cut down. Stay on track and see your progress every day. AHEAD - COUNTDOWNS & DATES Add the dates that pull you forward: trips, birthdays, holidays, anniversaries, weddings, deadlines, retirement, and personal milestones. Count down to each one, import from Apple Calendar, and track both the days until and the days since. New: every Ahead date now has its own to-do list, so you can plan the small tasks that make the date happen and check them off as it approaches. Share an Ahead date with a friend, follow it side by side, comment, and add to-dos together on joint dates. PLANNER Planner pulls everything that matters into one beautiful, time-first view: your habits, streaks, Ahead dates, Apple Calendar events, Apple Reminders, weather, sleep, and workouts, together at last. Not another calendar, but a clear, calm picture of what the day is actually asking of you. Because everything lives in one place instead of five apps, Planner is a quiet ally for ADHD minds: see the whole day at a glance and miss nothing. Two new widgets come with it: a Planner widget and a Calendar widget for your Home Screen. POMODORO FOCUS A calm Pomodoro timer inside Left. Choose your focus and break lengths and one of four timer styles, start a session in a tap, and follow it live from your Lock Screen, widgets and the Dynamic Island. Your focus history is all there too. FASTING TOOL A simple yet beautiful fasting tool inside Left. Pick a fasting window, start it in a tap, and follow every fast live from your Lock Screen, widgets and the Dynamic Island. Your history and stats are all there too. WHY LEFT Other apps give you habits without design, or aesthetics without depth. Left combines both: the widget range, the design quality, and the full set of time tools, in one app made with restraint and taste. Left requires a Premium plan to use its features. Choose a weekly, yearly plan or a one-time lifetime purchase to unlock everything. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
On
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Stop working out when to leave, and never be late again! On Time turns your next event into a simple, chronological plan. REDUCE THE MENTAL LOAD On-Time handles the backwards planning and repeated clock-checking for you. If you struggle with time awareness, staying on task, or getting distracted, it keeps the next step visible so you can stop juggling the whole plan in your head and move through your routine with less stress. Enter the event's start time, how long you need to get ready, and your expected travel time. On Time calculates when each step should begin, including a travel buffer and time to arrive early. SEE WHAT TO DO NOW One clear instruction and a live countdown keep your next action obvious. FOLLOW THE FULL PLAN See getting ready, leaving, travel, arrival, and event times in chronological order. STAY INFORMED Use optional reminders and a Live Activity to follow your countdown outside the app. REUSE YOUR PLANS Save commonly used event setups so they're ready for next time. On Time supports English and Japanese.
Screenshots
Verdict
The clearest difference is in-app purchases: On at none against Left's 10. On also leads on iOS requirement (18.0 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. Left sells 9 in-app purchases, starting at $0.99 per 7 days. On asks for nothing beyond the download.
| Parameter | Left | On |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (521 ratings) — better | — |
| Positive reviews | 73.3% of reviews | — |
| Number of ratings | 521 — better | — |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 238 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Cntxt Limited | Marcel-Edouard Saville |
Bugs and requests
Left
Reported bugs
3 issues- Widget not working
- Blank screen on widget after update
- Percentage left showing -inf%
Requested features
5 requests- Custom lifespan input
- Ability to set custom milestones
- Widget color customization
- Life widget
- Ability to track minutes left in the day
On
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Left
- Left Premium$0.997 Days
- Left Premium$2.997 Days
- Left Premium$3.997 Days
Show 4 moreShow fewer
- Left Premium7 Days trial$8.997 Days
- Left Premium2 variants$24.991 Year
- Left Premium7 Days trial$24.991 Year
- Left Premium$29.991 Year
- Left Premium Lifetime Deal$49.99
- Left Premium Lifetime$69.99
On
No in-app purchases









