AB LegSize vs Roost.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AB LegSize
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A handy and reliable application that will help you convert shoe sizes between different systems such as American, European, Chinese and Russian. You no longer need to worry about which shoe size to choose when buying in another country or using different sizing systems. Just enter your original size and select your target system - our app will do the work for you. Main functions: 1. Intuitive Interface: A nice and easy to use interface that makes the shoe size conversion process quick and easy. 2. Many sizing systems available: the ability to convert shoe sizes between US, European, Chinese and Russian systems. 3. Accurate Conversions: The application uses size tables to ensure maximum conversion accuracy. 4. Results immediately on the screen: instantly get the converted shoe size in the target system after input. No matter where you are and where you buy shoes, our program will help you make the right choice of size, facilitating the purchase process and preventing possible mistakes. Install the app right now and enjoy the convenience of converting shoe sizes in one place!
Roost.
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Bedtime without the phone fight. Roost locks the apps that keep you — or your kids — up at night, on a schedule you set, behind a PIN that can’t be undone in a weak moment. Set it once and it runs automatically. Now with Roost +, you can also pause apps by location. HOW IT WORKS 1. Choose the apps. Pick the feeds, games, and chats that should pause. 2. Set the schedule. Match school nights and weekends to the way your family actually works. 3. Add locations with Roost +. Pause selected apps when the device arrives at places like school, tutoring, or afterschool care, then unlock them when it leaves. 4. Make it stick. A parent PIN and Apple Screen Time help keep settings from being switched off. When a schedule starts, your chosen apps are locked until the window ends. With Roost +, apps can also lock and unlock automatically based on saved locations. No nightly nagging, no manual on/off. ROOST + Roost + is an optional subscription add-on for location-based app blocking: - Create saved locations with custom names and radius controls. - Automatically pause apps when the device arrives. - Automatically unlock apps when the device leaves. - View location-based roosting status inside the app. FOR PARENTS Roost is built around routines instead of constant policing: - Parent PIN protects your settings and early wake-ups. - Recovery email lets you reset your PIN securely if you forget it. - Screen Time guide walks you through the iOS settings that keep Roost firmly in place. - Location-based blocking helps protect focus during school, tutoring, care programs, and other daily routines. FOR EVERYONE Not a parent? Roost works just as well for grown-ups who scroll past their own bedtime. Run it in self-managed mode and give yourself a gentle, automatic pause for the apps you can’t put down. PRIVATE BY DESIGN Roost is built to need as little of your data as possible: - Your PIN is hashed and stored only in your device’s secure Keychain. It never leaves your phone. - The apps and schedules you choose are represented by Apple’s private Screen Time tokens. We never see which apps you block or when. - Location-based blocking uses saved places to trigger Roost + on your device. - We don’t sell data or run ads. The only personal information Roost collects is an email address, used solely to send a PIN reset code if you ever forget your PIN. BUILT ON APPLE SCREEN TIME Roost uses Apple’s Family Controls, Screen Time, and Location Services frameworks to block apps reliably at the system level. Made for iPhone and iPad. Sleep first. Scroll later. Questions? Email support@useroost.app Privacy Policy: https://useroost.app/privacy.html Terms of Use: https://useroost.app/terms.html
Screenshots
Verdict
The clearest difference is in-app purchases: AB LegSize at none against Roost.'s 2. AB LegSize also leads on iOS requirement (16.4 vs 18.0). Roost.'s advantage is update cadence (every 2 weeks vs every 2 months). 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
Both are free to download. Roost. sells 2 in-app purchases, starting at $4.99 per month. AB LegSize asks for nothing beyond the download.
AB LegSize ships an update every 2 months, Roost. every 2 weeks. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.
| Parameter | AB LegSize | Roost. |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 6 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Berkovich | Merit Apps LLC |
In-app purchases
AB LegSize
No in-app purchases
Roost.
- Roost+ Monthly$4.991 Month
- Roost+ Yearly$39.991 Year









