Comparison

One Thing vs Spool

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

Head to head
About

One Thing

This app helps you build positive habits by blocking distracting apps until you complete a chosen meaningful activity. It uses AI-powered verification and progress tracking to keep you motivated and accountable.

Highlights
  • Daily meaningful activity selection
  • Smart app blocking
  • AI-powered camera verification
  • Progress tracking and streaks
  • Flexible scheduling
  • Family controls integration
Features
Read full description

Stop scrolling. Start living. One Thing flips phone addiction on its head. Instead of fighting dopamine-driven habits, this app channels them — blocking distractions until you complete one meaningful activity each day. Exercise, read, meditate, do deep work, or practice an instrument. Finish first, then earn back access. The result? A daily digital detox that builds real habits, reduces mindless scrolling, and gives you hours of focus back. SUBSCRIPTION INFORMATION All features require an active subscription after the free trial period. HOW IT WORKS (Subscription Required) Pick one activity every morning: gym, reading, meditation, studying, journaling, running, walking, or any productive pursuit. Until it's done, distracting apps stay locked. No willpower needed. The environment does the work. SMART BLOCKING (Subscription Required) System-Level Control: Native iOS Screen Time integration locks apps at the deepest level Personalized Filters: Select exactly which apps to restrict based on individual triggers Flexible Scheduling: Set weekly routines, daily challenges, or immediate timed blocks Usage Caps: Limit daily or weekly opens and minutes for specific apps Emergency Unlock: Safety valve for moments when access is genuinely urgent AI-POWERED VERIFICATION (Subscription Required) Photo Proof: Snap a picture and GPT-4 Vision confirms whether the activity was actually completed Works Everywhere: From gym selfies to reading sessions, the AI adapts to any habit No Cheating: Intelligent analysis catches shortcuts and keeps accountability honest TRUE FOCUS MODE (Subscription Required) Distraction-Free Timer: Full-screen countdown for deep work, studying, or creative sessions Cross-Device Sync: Pairs with Mac for seamless focus across phone and desktop ADHD-Friendly: Structured sessions with grace periods reduce the friction of getting started PROGRESS & MOTIVATION (Subscription Required) Streak Tracking: Build momentum day after day with visual completion calendars 18-Level Progression: Journey from "Brain Rewiring" on Day 1 to "One Year Champion" Detailed Analytics: Monitor hours saved, daily completion rates, and long-term growth Milestone Alerts: Celebrate achievements at key moments throughout the journey PRIVACY & RELIABILITY (Subscription Required) On-Device Data: Personal information never leaves the phone Background Processing: Blocks stay active even when the app is closed Live Activity Widget: Persistent lock-screen reminder showing streaks and countdowns BUILT FOR Anyone trapped in a scroll-refresh-repeat cycle Students needing structured study sessions and fewer distractions Professionals seeking a digital detox during work hours Fitness-focused individuals building consistent gym or running routines People with ADHD looking for external structure and accountability Families creating healthier relationships with technology WHY IT WORKS Traditional habit trackers send reminders and hope for the best. One Thing creates real consequences: access to social media, news, and entertainment stays blocked until the daily habit is done. It's not about restricting freedom. It's about trading a dopamine loop for a life-changing routine. JOMO (joy of missing out) replaces FOMO, one day at a time. SUBSCRIPTION DETAILS Payment: Charged to Apple ID upon confirmation of purchase Renewal: Automatically renews unless cancelled at least 24 hours before the current period ends Management: Manage or cancel anytime in Apple ID Account Settings No Commitment: Cancel at any point, no penalties Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://onethingapp.framer.website/privacy-policy

About

Spool

This app helps you break free from excessive screen time by making you pause and justify your phone usage. It uses research-backed techniques to disrupt habit loops and offers instant blocking for apps and websites to help you reclaim focus and improve mental clarity.

Highlights
  • Justify phone usage before scrolling
  • AI-powered trigger insights
  • Identify peak phone usage times
  • Instant app and website blocking
  • Reclaim focus and mental clarity
Features
Read full description

Less scrolling, more living. Spool blocks doomscrolling, brainrot, and screen addiction at the source — by making you justify yourself before you scroll. Most screen time blockers don't work because they treat phone addiction like a discipline problem. It's not. It's a habit loop your brain is stuck in — a dopamine cycle reinforced every time you reach for your phone without thinking. Spool interrupts the cycle. Before any blocked app opens, you have to state your case to our AI. Use the same excuse too many times and Spool locks you out automatically. Built on cognitive behavioral techniques and behavioral research on attention and habit formation. WHY YOU'LL LOVE SPOOL - Understand your hidden triggers with daily AI insights - Track your phone addiction patterns over time - Discover when you reach for apps most (and why) - Instant app and website blocking that actually works - Schedule blocking windows for your weak hours - Lock in during deep work with custom focus sessions - Reflect on every excuse you've made and spot the loops - CBT-inspired techniques to break the dopamine cycle - Detox from doomscrolling, brainrot, and mindless scroll WHO IT'S FOR Spool is for anyone struggling with phone addiction, doomscrolling, or losing hours to TikTok, Instagram, Reels, YouTube Shorts, or X. Built for people who've tried Screen Time, willpower, and other app blockers — and want something that actually changes the habit, not just the limit. WHAT MAKES SPOOL DIFFERENT Other apps just block. Spool teaches you about yourself. Every excuse you make becomes data. Every reflection makes you more aware. Every blocked attempt strengthens the new habit. Reclaim your focus. Build a more intentional relationship with your phone. ————————————— Spool Full Access — Weekly Length: 1 week, auto-renewing Price: $4.99 USD / week Spool Full Access — Yearly Length: 1 year, auto-renewing Price: $44.99 USD / year Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://thespoolapp.com/#/privacy

Screenshots

One Thing4 screens
Spool4 screens

Verdict

The call

The clearest difference is review sentiment: Spool at 71% against One Thing's 28%. One Thing's advantage is ads (none vs shown) and rating (4.7 vs 4.4). On price, update cadence, in-app purchases and monetization model 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. One Thing sells 11 in-app purchases, starting at $7.99 per 7 days and Spool sells 8 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

One Thing holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: One Thing has 888 ratings behind it against 172, so its average is the more settled of the two. Written reviews complicate that: 28% of One Thing's written reviews are positive against 71% of Spool's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

One Thing ships an update every 2 weeks, Spool weekly. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
One Thing versus Spool: the parameters behind the verdict, then further details
ParameterOne ThingSpool
PriceFreeFree
Rating4.7 (888 ratings) — better4.4 (172 ratings)
Positive reviews27.5% of reviews71.0% of reviews — better
Number of ratings888 — better172
Update frequencyEvery 2 weeksWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionSubscription
DevicesiPhoneiPhone, iPad — better
Requires iOS17.2 — better17.6
Further details — not scored
Size188 MB406 MB
Age rating4+4+
DeveloperOne Thing LTDSpooli Inc

Customer experience

One Thing

All ratings888 ratings
Positive94.7%
Neutral2.5%
Negative2.8%
Written reviews69 reviews
Positive27.5%
Neutral11.6%
Negative60.9%

Spool

All ratings172 ratings
Positive87.2%
Neutral1.7%
Negative11.0%
Written reviews62 reviews
Positive71.0%
Neutral0.0%
Negative29.0%

Bugs and requests

One Thing

Reported bugs

1 issue
  • Incompatible with younger users due to payment requirements

Requested features

3 requests
  • Allow multiple activities per day
  • Add chores/cleaning/meal prep blocks
  • Option to add multiple blocks

Spool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

One Thing

Subscriptions11
  • One Thing (Full Access) (Weekly)$7.997 Days
  • Pro Plan Monthly$8.991 Month
  • One Thing (Weekly)$12.997 Days
Show 8 more
  • Pro Plan Yearly WB$21.901 Year
  • One Thing (Full Access) (Annual)$29.991 Year
  • One Thing (Yearly - BF)7 Days trial$29.991 Year
  • One Thing Annual7 Days trial$39.991 Year
  • Pro Plan Yearly$49.991 Year
  • One Thing (Yearly)7 Days trial$49.991 Year
  • One Thing (Yearly)7 Days trial$59.991 Year
  • One Thing Yearly7 Days trial$69.991 Year
8 purchases

Spool

Subscriptions8
  • Spool Features Weekly Subscription$4.997 Days
  • Spool Weekly Subscription$7.997 Days
  • Full Access: Monthly$7.991 Month
Show 5 more
  • Spool Premium Annual$25.001 Year
  • Full Access: Limited Time Offer7 Days trial$34.991 Year
  • Full Access: Yearly$34.991 Year
  • Full Access: Yearly7 Days trial$44.991 Year
  • Full Access: Yearly$44.991 Year

Questions

Is One Thing free?
One Thing is free to download, with in-app purchases available.
Is Spool free?
Spool is free to download, with in-app purchases available.
Which has better reviews, One Thing or Spool?
One Thing is rated higher. One Thing averages 4.7 out of 5 from 888 ratings, while Spool averages 4.4 from 172 ratings.
Do One Thing or Spool have ads?
Spool shows ads; One Thing does not.
Which is updated more often, One Thing or Spool?
One Thing ships an update every 2 weeks, and Spool weekly. Most recently, One Thing was updated on October 16, 2026 and Spool on October 22, 2026.

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