Comparison

Worry Stone AI vs Thrum

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

Head to head
About

Worry Stone AI

Features
Read full description

When your mind won't stop, give your fingers something to do. Slide across the stone's grooves with your fingertip. Every ridge answers with a real haptic buzz. Slowly, your attention comes back. No willpower. No sound. Just your finger and a digital stone. It's not a timer — no alarms, no pressure.It's not a meditation class — no chanting, no forced silence.It's something to hold onto the moment your mind starts to race. Touch Focus: trace the grooves and watch your focus bar rise.Breathe Mode: a glowing ring expands as you inhale, shrinks as you exhale. No headphones needed.Flow Mode: keep touching, and the app fades back — just a soft buzz stays with you. Before sleep, before a test, before that big meeting — just reach for it. Your focus never left. You just needed an anchor. For relaxation and focus practice only. Not a medical device. Unlock all features after subscribing Unlimited access to all features. You can cancel anytime during the 3-day trial. Otherwise, after the trial ends, the subscription will automatically renew at USD 1.90 per week until you cancel. *After confirming your purchase, payment will be charged to your iTunes account.* By default, the subscription will automatically renew at the same price and billing cycle after the current subscription period ends. To cancel, you must do so at least 24 hours before the current subscription period expires. *You can cancel your subscription at any time through your iTunes account subscription settings: on your device, go to Settings > iTunes & App Store > Apple ID > View Apple ID > enter password > Subscriptions > Manage App Subscriptions > tap Cancel Subscription at the bottom of the page.* Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Thrum

Features
Read full description

Thrum is a silent, haptic focus timer for the ADHD brain. Feel time pass on your wrist — no numbers, no noise. A gentle, rhythmic pulse keeps you anchored, even when the screen is off. â€ĸ Time-hiding focus sessions — a ring that pulses with each cue, never a clock â€ĸ Works screen-off with reliable, gentle haptics (never a shock) â€ĸ Interval cues that nudge you through the day â€ĸ Transparent, one-tap cancel. No ads, ever. Thrum is a focus & time-awareness tool, not a medical or treatment device. Thrum Pro Your first 5 focus sessions are free. Pro unlocks unlimited focus sessions on iPhone and Apple Watch, custom haptic patterns, unlimited cue schedules, and focus stats. Available as a Monthly or Yearly auto-renewable subscription. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically for the same price and period unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://thrum.webkodingtheme.com/terms.html Privacy Policy: https://thrum.webkodingtheme.com/privacy.html

Screenshots

Worry Stone AI4 screens
Thrum4 screens

Verdict

The call

The clearest difference is update cadence: Thrum at every 2 days against Worry Stone AI's every 4 months. Worry Stone AI's advantage is iOS requirement (14.0 vs 18.0). 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. Worry Stone AI sells 1 in-app purchase, starting at $1.99 per 7 days and Thrum sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Worry Stone AI ships an update every 4 months, Thrum every 2 days. The most recent releases landed on October 28, 2026 and November 4, 2026 respectively.

Scorecard2 real differences ¡ 4 level
Worry Stone AI versus Thrum: the parameters behind the verdict, then further details
ParameterWorry Stone AIThrum
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Apple Watch
Requires iOS14.0 — better18.0
Further details — not scored
Size28 MB14 MB
Age rating4+4+
DeveloperQingdao Ruineng Lighting Co., Ltd.Arif OZELCI

In-app purchases

1 purchases

Worry Stone AI

Subscriptions1
  • 周äģ˜3 Days trial$1.997 Days
4 purchases

Thrum

Subscriptions3
  • Thrum Pro — Monthly$3.991 Month
  • Thrum Pro Yearly1 Year trial$29.991 Year
  • Thrum Pro — Yearly$29.991 Year
One-time1
  • Thrum Pro — Lifetime$59.99

Questions

Is Worry Stone AI free?
Worry Stone AI is free to download, with in-app purchases available.
Is Thrum free?
Thrum is free to download, with in-app purchases available.
Do Worry Stone AI or Thrum have ads?
Neither Worry Stone AI nor Thrum shows ads.
Which is updated more often, Worry Stone AI or Thrum?
Worry Stone AI ships an update every 4 months, and Thrum every 2 days. Most recently, Worry Stone AI was updated on October 28, 2026 and Thrum on November 4, 2026.

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