Comparison

Principles App vs Left

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

Head to head
About

Principles App

Features
Read full description

Listen, if you're serious about leveling up, whether it's crushing your side gig, scaling a business, or just getting out of your own way, Principles is the tool that turns random inspiration into daily dominance. It's simple: Open the app, swipe through battle-tested principles that cut through the noise. Stuff like "You don't get confident by yelling affirmations, you stack proof by outworking your doubts" or "The pain is the pitch: Nail your customer's hurt, and the sale closes itself." Swipe right on what hits, left on what doesn't, and build a deck that's custom to your grind. This isn't another quote app full of feel-good crap that evaporates by lunch. It's designed for doers who want mindset shifts that stick and deliver results. You start free with a solid lineup of principles to test the waters, then unlock unlimited when you're ready to go all in. What You'll Get Out of Principles: Swipe for Real Growth: Curated principles that pack a punch - hustle hacks, business truths, and self-improvement gold - in a clean, no-distraction swipe setup that feels effortless but builds momentum fast. Make It Your Own: Drop in your own ideas, concepts, or tweaks to the classics. Create decks that evolve with you, so every swipe reinforces the habits that turn average into elite. Daily Reminders That Work: Turn on notifications for timed hits of wisdom - morning fuel to set your edge or afternoon resets to keep you locked in when the day's dragging. Futuristic Simplicity: Sleek design that keeps you focused on the wins, not the interface. Internalize stuff like "A focused fool crushes a distracted genius" and watch your output skyrocket. No Games, Just Value: Your data stays private, no ads cluttering the basics- just pure, actionable fuel to outthink, outlast, and outearn everyone else. Upgrade to Unlimited when you're ready to build a larger personal library - because the best investment is in the principles that compound your success. Download Principles now, start swiping, and watch how small daily inputs create massive outcomes. Let's make your hustle unstoppable. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://principlesapp.com/privacy

About

Left

Visualize your time with customizable widgets for your Home Screen, Lock Screen, and StandBy. Track life progress, countdowns to important events, and monitor habits with streak tracking. Offers a clean and visually appealing way to stay aware of your time.

Highlights
  • Time progress widgets (year, week, day)
  • Life progress tracking
  • Event countdowns
  • Habit and streak tracking
  • Customizable widget styles and colors
  • Apple Calendar sync
Read full description

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. 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/

Screenshots

Principles App3 screens
Left4 screens

Verdict

The call

The clearest difference is update cadence: Left at every 3 days against Principles App's every 5 weeks. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Principles App sells 1 in-app purchase, starting at $1.99 per month and Left sells 28 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Principles App ships an update every 5 weeks, Left every 3 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Principles App versus Left: the parameters behind the verdict, then further details
ParameterPrinciples AppLeft
PriceFreeFree
Rating—4.6 (472 ratings) — better
Positive reviews—73.2% of reviews
Number of ratings—472 — better
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Paid
DevicesiPhone, iPad — betteriPhone
Requires iOS26.226.0 — better
Further details — not scored
Size16 MB246 MB
Age rating4+4+
DeveloperRS9 Systems Pty LtdCntxt Limited

Bugs and requests

Principles App

Not enough reviews yet to summarise bugs or 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

In-app purchases

1 purchases

Principles App

Subscriptions1
  • Principles Unlimited Monthly$1.991 Month
28 purchases

Left

Subscriptions14
  • Left Premium$0.997 Days
  • Left Premium$2.997 Days
  • Left Premium2 variants$3.997 Days
Show 11 more
  • Left Premium7 Days trial$8.997 Days
  • LEGEND$8.991 Year
  • Left Premium7 Days trial$19.991 Year
  • Left Premium$19.997 Days
  • Left Premium2 variants$24.991 Year
  • Left Premium7 Days trial$24.991 Year
  • Left Premium$29.991 Year
  • Left Premium7 Days trial$29.991 Year
  • Left Premium$34.991 Year
  • Left Premium7 Days trial2 variants$34.991 Year
  • Thanks!$39.991 Year
One-time14
  • Left+$0.99
  • Awesome$1.99
  • Left+$2.99
Show 11 more
  • Left+$3.99
  • Legend$4.99
  • Left+ Thanks$5.99
  • Left+$6.99
  • Left+$7.99
  • Left+$8.99
  • Left Premium$12.99
  • Left Premium$29.99
  • Left Premium2 variants$49.99
  • Left Premium2 variants$69.99
  • Left Premium$149.00

Questions

Is Principles App free?
Principles App is free to download, with in-app purchases available.
Is Left free?
Left is free to download, with in-app purchases available.
Do Principles App or Left have ads?
Neither Principles App nor Left shows ads.
Which is updated more often, Principles App or Left?
Principles App ships an update every 5 weeks, and Left every 3 days. Most recently, Principles App was updated on October 27, 2026 and Left on October 28, 2026.

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