# Sleep Optimizer vs T

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.

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 30, 2026 respectively.

## The numbers

| Metric | Sleep Optimizer | T |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/t-shirt-meals/id6479202640/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 21 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Livanda - Internetkliniken AB](https://appshunter.io/developer/1607972909) | [Justin Chang](https://appshunter.io/developer/1502186482) |

## What reviewers say

### Sleep Optimizer

[App page](https://appshunter.io/ios/app/sleep-optimizer/id1607972907)

**Features:** macOS Compatibility

**In-app purchases:** none


### T

[App page](https://appshunter.io/ios/app/t-shirt-meals/id6479202640)

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.

**Highlights:** T-shirt size calorie estimation, Personalized healthy meal menus, Daily meal logging, Weight progress tracking, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Optimizer free?

Sleep Optimizer is free to download, with no in-app purchases.

### Is T free?

T is free to download, with no in-app purchases.

### Do Sleep Optimizer or T have ads?

Neither Sleep Optimizer nor T shows ads.

### Which is updated more often, Sleep Optimizer or T?

Sleep Optimizer ships an update every 2 months, and T every 4 days. Most recently, Sleep Optimizer was updated on October 27, 2026 and T on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*