Comparison

Session vs Only One Thing

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

Head to head
About

Session

Track your progress towards mastering skills by logging dedicated practice time. Manually log sessions or use the automatic timer to record your efforts. Start making measurable progress on your goals today.

Highlights
  • Create custom activities
  • Manual session logging
  • Automatic timer
  • Track progress towards goals
  • Skill mastery tracking
Features
Read full description

ty for 5+ years of Session! but it's time to start a new arc. search timespent on the app store to see what's next. —cal --- "The secret to getting ahead is getting started." ―Mark Twain They say it takes 10,000 hours of deliberate practice to master a skill, but who's counting? Now, you can with Session. Create an activity, and log sessions manually or with the automatic timer. Whether it's for 10 hours, 100, 10,000 or more – start making progress towards your goals today.

About

Only One Thing

Features
Read full description

The modern world constantly demands our attention, leaving us overwhelmed by endless to-do lists. 'Only One Thing' is a gentle companion designed to help you declutter your mind and focus deeply on the single most meaningful goal of your day. It’s more than just a task manager. It’s a tool for mindfulness and achievement, empowering you to let go of the pressure to do "everything" and find peace in doing what matters most. Key Features: - One Goal, Deep Immersion: Focus your scattered thoughts on the one mission you truly want to conquer today. - A Festival of Accomplishment: The moment you achieve your goal, stunning particle effects and immersive haptics fill the screen, whole-heartedly celebrating your effort. - Emotional Themes: Experience the gentle drift of seasonal snowflakes or weather-synced particles. Tailor your personal space with 12 curated brand colors. - Absolute Privacy: Your data is yours. All records are stored strictly on your device with no server transmission or registration required. - Track Your Journey: Watch your consistency grow. Your history and streaks serve as a testament to your personal growth. Out of a hundred worries today, what is your 'one thing'? Begin your focused journey now.

Screenshots

Session4 screens
Only One Thing3 screens

Verdict

The call

The clearest difference is in-app purchases: Session at none against Only One Thing's 1. Session also leads on ads (none vs shown) and iOS requirement (13.2 vs 15.1). Only One Thing's advantage is update cadence (every 9 days vs every 4 months). On price 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. Only One Thing sells 1 one-off in-app purchase. Session asks for nothing beyond the download.

UpkeepUpdate frequency

Session ships an update every 4 months, Only One Thing every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Session versus Only One Thing: the parameters behind the verdict, then further details
ParameterSessionOnly One Thing
PriceFreeFree
Rating4.7 (936 ratings) — better—
Positive reviews76.8% of reviews—
Number of ratings936 — better—
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.2 — better15.1
Further details — not scored
Size1 MB101 MB
Age rating4+4+
DeveloperGlasshouse Studio, LLCGyuseop Park

Bugs and requests

Session

Reported bugs

3 issues
  • Timer inconsistencies when exiting the app
  • Inability to add time manually (only minutes, not hours)
  • App crashes when trying to add a session manually

Requested features

6 requests
  • Add delete and rename session functions
  • Implement activity editing (color, icon, name, description)
  • Provide activity reordering capability
  • Include activity time tracking by day/week/month/year
  • Add Pomodoro timer functionality
Show 1 more
  • Integrate music playback or nature sounds

Only One Thing

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Session

No in-app purchases

1 purchases

Only One Thing

One-time1
  • Lifetime Ownership of Pro Version$4.99

Questions

Is Session free?
Session is free to download, with no in-app purchases.
Is Only One Thing free?
Only One Thing is free to download, with in-app purchases available.
Do Session or Only One Thing have ads?
Only One Thing shows ads; Session does not.
Which is updated more often, Session or Only One Thing?
Session ships an update every 4 months, and Only One Thing every 9 days. Most recently, Session was updated on November 3, 2026 and Only One Thing on October 31, 2026.

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