Comparison

THIM vs Sit to Stand

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

Head to head
About

THIM

This app helps you improve sleep quality through a unique conditioning program developed by a sleep scientist. It tracks sleep stages, offers power naps, and features a smart alarm to wake you from light sleep. Monitor your sleep efficiency with a score used in sleep clinics.

Highlights
  • Sleep conditioning program
  • Track sleep quality and stages
  • Accurate 10-minute power naps
  • Smart alarm for light sleep wake-ups
  • Sleep efficiency scoring
  • Community for sleep optimization
Features
Read full description

THIM is the ring that conditions you for better sleep. Sleep well tonight and get the most from tomorrow. Developed by sleep scientist Professor Leon Lack, use one of THIM’s many novel features: • IMPROVE SLEEP – THIM offers a unique sleep-conditioning program designed to help you fall asleep sooner and reduce wakefulness across the night. • TRACK SLEEP QUALITY - Use your phone to track your sleep quality throughout the night including stages of sleep and periods of wakefulness. • POWER NAP – THIM determines when you fall asleep to the nearest minute. No other device can deliver this accuracy. This ensures exactly 10-mins of sleep during your nap – the time needed to avoid sleep inertia upon waking. • SMART ALARM – Waking from deep sleep is not pleasant. In contrast, waking from light sleep feels great. Use this feature to ensure you wake from a light stage of sleep so you bounce out of bed in the morning and enjoy a great start to the day. • MONITOR SLEEP EFFICIENCY – THIM provides a unique sleep efficiency score for each night of sleep. This algorithm is used by sleep clinics to score sleep studies. • JOIN OUR COMMUNITY – Join thousands of people whom have traded in their non-assistive sleep tracker for a product, which contains novel, evidenced-based programs to improve and optimize your sleep. Other device's can only track sleep. THIM improves sleep. Welcome.

About

Sit to Stand

Measure leg strength with a 30-second chair-stand test using motion sensors. Track progress, receive age-based comparisons, and access guided training sessions. Designed for older adults with large text and simple navigation.

Highlights
  • 30-second chair-stand test
  • Automatic repetition counting
  • Age and sex reference data comparison
  • Guided sit-to-stand training sessions
  • Retest reminders and progress tracking
  • Large text and simple interface
Features
Read full description

Measure your leg strength with the 30-second chair stand test — counted automatically and scored for your age. This app uses the validated 30-second chair-stand assessment — the same test physiotherapists and geriatric clinics use — and counts your repetitions automatically using your phone's motion sensors. No stopwatch, no counting, no pen and paper. HOW THE TEST WORKS • Sit in a sturdy chair, feet flat on the floor about hip-width apart • Hold the phone against your chest with both hands • Stand up and sit down as many times as you can in 30 seconds • The app counts for you and speaks encouragement as you go Your result is compared against published age and sex reference data, so you see not just a number but what it means for someone your age. NEW — SIT TO STAND TRAINING Testing tells you where you stand. Training moves the number. • Short guided sessions of sit-to-stand sets, built around your last result • Voice coaching through every set, with rest between them • Choose your own training days and get one gentle reminder — never daily • Always free THE RETEST LOOP • Set your own cadence — every one to four weeks • One reminder when your next check-in is due • See the change since last time, and your count over months BUILT FOR OLDER ADULTS Large text, large buttons, plain words instead of icons, and one clear action per screen. FREE • The 30-second test with automatic counting • Voice guidance and age-based scoring • Sit to Stand Training, in full • Your test history PRO — one payment, no subscription • Unlimited tests • Progress charts, including your pace within a single test • Clinic Mode — test and track several people separately • Export to PDF and CSV for your physiotherapist or GP PRIVACY Everything stays on your iPhone. The app has no analytics, no advertising and no crash reporting, and makes no network connections of its own. Your results are yours. No account, no server, no analytics, no ads. IMPORTANT This app is for information and self-tracking only. It is not a medical device and does not provide medical advice, diagnosis or treatment. Always consult a qualified healthcare professional. Stop if you feel unwell, and use a chair against a wall.

Screenshots

THIM4 screens
Sit to Stand4 screens

Verdict

The call

The clearest difference is review sentiment: Sit to Stand at 100% against THIM's 0%. Sit to Stand also leads on update cadence (every 11 days vs every 2 months). THIM's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.0). On price, 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

Both are free to download. Sit to Stand sells 1 one-off in-app purchase. THIM asks for nothing beyond the download.

UpkeepUpdate frequency

THIM ships an update every 2 months, Sit to Stand every 11 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
THIM versus Sit to Stand: the parameters behind the verdict, then further details
ParameterTHIMSit to Stand
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better18.0
Further details — not scored
Size96 MB7 MB
Age rating12+4+
DeveloperRe-Time Pty LtdSANCHIT AGGARWAL

Customer experience

THIM

Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Sit to Stand

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

THIM

No in-app purchases

1 purchases

Sit to Stand

One-time1
  • Pro Upgrade$1.99

Questions

Is THIM free?
THIM is free to download, with no in-app purchases.
Is Sit to Stand free?
Sit to Stand is free to download, with in-app purchases available.
Do THIM or Sit to Stand have ads?
Neither THIM nor Sit to Stand shows ads.
Which is updated more often, THIM or Sit to Stand?
THIM ships an update every 2 months, and Sit to Stand every 11 days. Most recently, THIM was updated on November 3, 2026 and Sit to Stand on October 31, 2026.

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