Comparison

Triflow vs Sonder Calendar

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

Head to head
About

Triflow

This app helps users overcome task overwhelm and decision paralysis by focusing on just three tasks at a time. It offers features like shuffling tasks, a distraction-free interface, and time tracking to encourage momentum and build confidence.

Highlights
  • Focus on top 3 tasks
  • Shuffle task order
  • See one task at a time
  • Time tracking
  • Distraction-free interface
  • Works offline
Read full description

Overwhelmed by your to-do list? I created Triflow because I was too. It helps break through decision paralysis and actually start working on what matters. -- Made for ADHD & Executive Function Challenges I know the struggle of staring at a mountain of tasks and not knowing where to start. Triflow was born from my own need for something that addresses decision paralysis, improves focus, and helps build momentum with a simple approach backed by research. -- How Triflow Works (It's Simple, Really) 1 - Choose your top 3 tasks - Just three. Not twenty. This limit changed everything for me, and studies show it reduces overwhelm. 2 - Shuffle if you want - Can't decide which to do first? I added a shuffle feature so Triflow can randomize the order for you. 3 - See one task at a time - Focus on just one thing without the distraction of what's next. 4 - Track your time - Use the timer or stopwatch to maintain momentum and improve time management. 5 - Complete. Celebrate. Repeat. - Watch your progress and build confidence with each completed task. -- Why It Works Triflow is built on evidence-based strategies that research shows genuinely help with productivity challenges (see references below) - and I've experienced these benefits firsthand: • Reduces decision fatigue - Fewer choices = less paralysis and improved task initiation • Creates external structure - External support systems are proven effective for ADHD management • Visual progress tracking - Completed tasks trigger dopamine release, reinforcing positive behavior • Implementation intentions - Concrete plans dramatically improve your ability to start and finish tasks -- Features That Make the Difference • Clean, distraction-free interface - Multiple themes available to suit your visual preference • Haptic feedback - Physical prompts help maintain attention and focus • Timer alarms - Gentle reminders when time's up for better time awareness • Shuffle feature - Eliminates the "which one first?" problem that causes procrastination • Works offline - No account needed, just open and start getting things done -- In my own life, I noticed that when I was stuck in productivity paralysis, my wife would count "3, 2, 1, go!" and somehow that was enough to get me moving. I built Triflow to recreate that gentle push, helping transform overwhelm into action, one task at a time. No subscriptions. No complicated features. Just a simple tool I created to help myself focus and get things done – and now I'm sharing it with you. Download now and turn "I'll do it later" into "I did it!" -- Research References & Further Reading: • Decision fatigue and choice overload - Dr. Sheena Iyengar - https://faculty.washington.edu/jdb/345/345%20Articles/Iyengar%20%26%20Lepper%20(2000).pdf • External structure for ADHD management - Dr. Russell Barkley - https://www.russellbarkley.org/factsheets/ADHD_EF_and_SR.pdf • Dopamine reinforcement and task completion - Neuroscience of reward systems - https://www.sciencedirect.com/science/article/pii/S2352154621000644 • Implementation intentions and task initiation - Dr. Peter Gollwitzer - https://cancercontrol.cancer.gov/sites/default/files/2020-06/goal_intent_attain.pdf

About

Sonder Calendar

This app simplifies calendar management by allowing users to input events via voice or text. It categorizes your schedule into seven distinct colors and offers features like goal setting and friend invitations without social media feeds.

Highlights
  • Voice and text event input
  • Seven color-coded categories
  • Goal setting and tracking
  • Repeating event scheduling
  • Friend invitations for events
  • Shared joint calendars
Features
Read full description

How many buttons do you press to put one thing on your calendar? Sonder is one. You talk, it listens, and your day comes back as color. Say "gym at seven, class nine to noon, work one to five, dinner with Gavin at six" and all four land on the right days at the right times, sorted into seven colors. No forms. No time pickers. No dragging blocks around a grid. SEVEN COLORS Every hour becomes one of seven things: Work — job, class, studying, meetings Health — gym, sports, doctor, rest that actually restores you Leisure — movies, gaming, going out, hobbies Chores — errands, laundry, cooking, admin People — family, partner, close friends Wasted time — doomscrolling, aimless phone time Sleep & transit — sleeping, commuting, driving Most calendars tell you what is next. Sonder shows you where it all went. BUILT FOR A SEMESTER Repeating classes and shifts are one sentence. "Every Monday and Wednesday, chem nine to ten thirty, until December tenth." Say it once and it fills the whole term. Move it later by talking, not by tapping through a repeat menu. ASK IT THINGS "When is my dentist appointment?" "What do I have Friday?" It answers instead of adding something. SEE THE SHAPE OF YOUR WEEK Month, week, day and year, all in color. A week of green with no blue in it looks like exactly what it is. GOALS, NEVER STREAKS Set how many hours a week you want on each category and Sonder shows how far ahead or behind you are, plus how many hours you have not promised to anything yet. There are no streaks. Streaks make people log what looks good instead of what happened, and then the numbers are fiction. The data is the point, so it stays honest. OPTIMIZE One tap names what you are furthest behind on this week and where it fits today. It is arithmetic on the calendar you already have, so it costs nothing and works with no signal. FRIENDS, WITHOUT A FEED Add friends, invite them to a specific event, and see how many hours you have spent together. There is no feed, no follower count, and nothing to scroll. Your calendar is not visible to your friends. They see an event only when you send them that one event by name. A JOINT CALENDAR Share one calendar with one person — a partner, a roommate, whoever you actually plan around. You both write to it, you both see it, nobody else does. Your own calendar stays yours. YOUR WORDS STAY YOURS What you say goes into your own backup, which only you can read. Sonder does not sell your data and runs no third-party analytics. Nothing you write is shown to anyone unless you deliberately send it to them. FREE The whole calendar, friends, invites and every count. Voice and typing share a limit of five requests a day. MEMBER $3.99 a month, or $29.99 a year. The names behind the counts: who viewed your profile, whose top friends you are in, and your own, by hours together. Plus twenty requests a day instead of five. Payment is charged to your Apple account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel it any time in your Apple account settings. Terms of Use: https://sondercalendar.com/terms Privacy Policy: https://sondercalendar.com/privacy

Screenshots

Triflow4 screens
Sonder Calendar4 screens

Verdict

The call

The clearest difference is price: Sonder Calendar at Free against Triflow's $3.99. Sonder Calendar also leads on in-app purchases (none vs 4) and update cadence (every 4 days vs every 2 weeks). Triflow's advantage is rating (5.0 vs 4.5) and chart position (#200 vs unranked). On 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

CostPrice · In-app purchases · Ads · Monetization

Sonder Calendar is free to download; Triflow costs $3.99 up front. Triflow sells 4 one-off in-app purchases. Sonder Calendar asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Triflow holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

Triflow ships an update every 2 weeks, Sonder Calendar every 4 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard8 real differences · 3 level
Triflow versus Sonder Calendar: the parameters behind the verdict, then further details
ParameterTriflowSonder Calendar
Price$3.99Free — better
Rating5.0 (1 ratings) — better4.5 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
Best chart rank#200 — better—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size8 MB38 MB
Age rating4+4+
DeveloperKevin StaussOwen Lombardi

Customer experience

Triflow

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Sonder Calendar

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Triflow

One-time4
  • Small Tip$0.99
  • Medium Tip$2.99
  • Big Tip$4.99
Show 1 more
  • Generous Tip$9.99
None

Sonder Calendar

No in-app purchases

Questions

Is Triflow free?
Triflow costs $3.99, and also offers in-app purchases.
Is Sonder Calendar free?
Sonder Calendar is free to download, with no in-app purchases.
Which has better reviews, Triflow or Sonder Calendar?
Triflow is rated higher. Triflow averages 5.0 out of 5 from 1 ratings, while Sonder Calendar averages 4.5 from 4 ratings.
Do Triflow or Sonder Calendar have ads?
Neither Triflow nor Sonder Calendar shows ads.
Which is updated more often, Triflow or Sonder Calendar?
Triflow ships an update every 2 weeks, and Sonder Calendar every 4 days. Most recently, Triflow was updated on November 8, 2026 and Sonder Calendar on October 31, 2026.

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