Sleep Optimizer vs T
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Optimizer
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Sleep problems are very common. One way to improve sleep that has proven effective is to limit the time in bed. In this app you log your approximate time spent in bed and approximately how much of this time you have actually slept. Based on your individual sleep habits the app will then give you tailored recommendations for how you in an effective and careful way can limit the number of hours you spend in bed. This to maximize your chances to get good sleep. Please note that this app is made for you who are suffering from Insomnia. If you are suffering from sleep apnea, restless leg, narcolepsy or another similar sleep disorder you shall not use this sleep app to improve your sleep. In these cases, instead please consult your doctor to get help.
T
Estimate calorie intake using T-shirt sizes instead of numbers. Create personalized menus with healthy meal options and log your food throughout the day. Track your weight daily to monitor progress towards your goals.
- T-shirt size calorie estimation
- Personalized healthy meal menus
- Daily meal logging
- Weight progress tracking
- Intuitive interface
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Use T-Shirt sizing (xs/sm/md/lg/xl) to estimate calories instead of real numbers. Create a personal menu with healthy meals to keep yourself on track. Give each meal a T-Shirt size depending on what you want to track. Log your meals throughout the day and count the sizes, rather than the calories! Track your weight every day to watch your progress.
Screenshots
Verdict
The clearest difference is update cadence: T at every 4 days against Sleep Optimizer's every 2 months. Sleep Optimizer's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sleep Optimizer ships an update every 2 months, T every 4 days. The most recent releases landed on October 27, 2026 and October 19, 2026 respectively.
| Parameter | Sleep Optimizer | T |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Livanda - Internetkliniken AB | Justin Chang |
In-app purchases
Sleep Optimizer
No in-app purchases
T
No in-app purchases
