MD Calculator vs Top Box
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MD Calculator
Perform calculations directly from your Home Screen using interactive widgets. Customize your experience with a variety of themes, including nostalgic skeuomorphic designs.
- Home Screen Calculator Widget
- iOS 17 Interactive Widget Technology
- Customizable Themes
- Skeuomorphic Themes
- On-the-go Computations
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Introducing MD Calculator Widget - a beautifully crafted calculator widget for on-the-go computations. Leverage the power of iOS 17's latest Interactive Widget technology, allowing for seamless calculations directly from your Home Screen. Tailor your experience with our rich selection of customizable themes, catering to your unique style and preference. Dive into our meticulously designed skeuomorphic themes and relish the nostalgic feel of a physical calculator right on your device.
Top Box
Secure your phone and personal information with this app locker. It allows you to restrict access to any application, preventing unauthorized viewing and accidental deletion of important data. Enjoy peace of mind with customizable password protection and comprehensive privacy safeguards.
- App restriction and locking
- Anti-deletion feature for apps
- Password protection
- Customizable password options
- Integrates with Screen Time permission
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Top Box is an application designed specifically to protect personal privacy and information security. It allows you to use your phone freely without worrying about personal privacy leaks. Protect your personal privacy and information security and turn your phone into a private space! Easy to use, select applications and lock them instantly. Restrict and lock applications, providing 24-hour comprehensive protection for your privacy. Multiple mode options to cover various scenarios of your phone usage. Password protection with customizable passwords to safeguard your privacy and data security. Features: - App Lock: Top Box can restrict any application to ensure sensitive content is not accessed. - Anti-Deletion Feature: You can prevent important applications from being deleted, eliminating concerns about data loss due to accidental deletion. Top Box integrates Apple's "Screen Time" permission for managing home screen apps. If you want to restrict or lock apps, please allow the app to access screen time before using the feature. If you like our product, please leave a positive review to support us. If you have any questions, feel free to provide feedback. 【Premium Membership Description】 1. Annual Membership Description ◎ Subscription Period: 1 year ◎ Subscription Price: 48 yuan per month, 38 yuan for the first year 2. Lifetime Membership Description ◎ Subscription Period: Long-term ◎ Subscription Price: 48 yuan 3. Other Rules ◎ Payment: Payment is made through the user's iTunes account immediately upon confirmation of purchase. ◎ Renewal: The Apple iTunes account will be charged within 24 hours before expiration. Upon successful payment, the subscription period will be extended by 1 subscription cycle. ◎ Canceling Renewal: To cancel the renewal, please take action at least 24 hours before the current billing period. Here are the steps to cancel: Go to the Home page, enter [Settings], click on [iTunes Store and App Store], select [Apple ID], choose [View Apple ID], go to [Account Settings], click on [Subscriptions], select the subscription item, and cancel the subscription. ◎ Auto-Renewal Service Agreement:https://topbox.tiangeltd.com/agreements/topbox/automaticRenewalEn.html ◎ Paid Membership Service Agreement:https://topbox.tiangeltd.com/agreements/topbox/vipSubscriptionEn.html ◎ User Terms of Service (including User Privacy Agreement): https://topbox.tiangeltd.com/agreements/topbox/TopBoxUserAgreementEn.html
Screenshots
Verdict
The clearest difference is rating: Top Box at 4.8 against MD Calculator's 4.5. Top Box also leads on update cadence (every 6 days vs fortnightly). MD Calculator's advantage is device support (3 vs 1). On price, review sentiment, ratings volume and ads 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. MD Calculator sells 1 one-off in-app purchase and Top Box sells 2 in-app purchases, starting at $27.49 per year. Whichever you choose, the download price is not the number that matters.
Top Box holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 78 and 51 respectively. Written reviews point the same way: 60% of MD Calculator's written reviews are positive against 65% of Top Box's.
MD Calculator ships an update fortnightly, Top Box every 6 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.
| Parameter | MD Calculator | Top Box |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (78 ratings) | 4.8 (51 ratings) — better |
| Positive reviews | 59.6% of reviews | 65.0% of reviews — better |
| Number of ratings | 78 — better | 51 |
| Update frequency | Fortnightly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Vision Pro — better | iPhone |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 32 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | MD Studio | Chengdu Tiange Technology Co., Ltd |
Customer experience
MD Calculator
Top Box
In-app purchases
MD Calculator
- MD Calculator Premium$0.99
Top Box
- Vip包年1 Year trial$27.491 Year
- 永久Vip$27.49









