Comparison

计算器 EMMO vs App Guardian

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

Head to head
About

计算器 EMMO

A professional scientific calculator with a user-friendly interface and customizable themes. It offers advanced functions beyond the standard system calculator, along with a history log for easy access to past calculations.

Highlights
  • Advanced scientific functions
  • Customizable themes
  • History log
  • Multiple sound effects
  • Smart and convenient operation
Features
Read full description

EMMO计算器  EMMO出品,必属精品 比系统计算器更全能实用,占用空间,方便智能便捷。 出色的马卡龙配色 各种好看的主题 适合女生 10几种音效 历史记录功能

About

App Guardian

Secure your device by locking apps, encrypting private media, and preventing accidental purchases. Manage children's screen time and app installations for a safer digital environment. Offers comprehensive protection for your privacy and information.

Highlights
  • App locking for social media and games
  • Secure vault for photos and videos
  • App usage statistics tracking
  • Uninstall prevention for important apps
  • Parental controls for screen time and installations
  • Payment locking for app stores
  • Accidental deletion and purchase prevention
Features
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App Guardian: Comprehensive Protection for Your Privacy and Information Security App Guardian is a powerful application designed to protect your personal privacy and information security. Whether preventing others from peeking at your private data or setting safe boundaries for your children's phone usage, this app provides all-around protection. Main Features: App Locking: Easily lock social and gaming apps like WeChat, TikTok, and games to ensure your chat history and social media posts remain private, and prevent children from becoming addicted to games. Without the password, no one can access your private photos, videos, or messages. Secure Vault: Encrypt and lock private photos and videos, ensuring they remain invisible in your gallery and can only be viewed with a password. Usage Statistics: Track app usage time, pickup counts, and notification numbers to help you better manage your time and increase self-awareness. Uninstall Prevention: Prevent important apps from being accidentally deleted, ensuring data security and avoiding loss of important files due to accidental uninstallation. Parental Controls: Limit app installations, control screen time, and monitor device usage to help you effectively manage your children's device usage. Payment Locking: Lock App Store and other payment apps to prevent accidental payments or children purchasing games. Highlighted Features: Accidental Deletion Prevention: Prohibit important apps from being deleted, guaranteeing data integrity. Consumption Protection: Effectively block accidental in-app purchases to prevent unnecessary spending. Quick Unlock: Quickly unlock individual apps by entering a password without launching the main app. This subscription will automatically renew through your iTunes account, with the renewal fee being deducted according to your plan 24 hours before the end of the current subscription period. You can manage or cancel automatic renewal in your account settings. Cancellation of automatic renewal must be done at least 24 hours before the end of the current subscription period. If your trial has not ended, the remaining days will automatically expire after you start your subscription. By enabling subscription, you agree to the following terms: Terms of Service: http://www.appcloak.cn/?page_id=2 Privacy Policy: http://www.appcloak.cn/?page_id=3 If you encounter any issues during use, we welcome your feedback through the in-app problem reporting feature. We promise to resolve your issues as quickly as possible and continuously improve our services to meet your needs. App Guardian supports iPhone and iPad, protecting your device with PIN codes and Face ID, ensuring 100% security and privacy. Whether you want to protect personal privacy or provide a healthier phone environment for your children, App Guardian is your best choice. Download now to experience the most powerful privacy protection! If you have any questions or suggestions, please contact us anytime through the in-app feedback.

Screenshots

计算器 EMMO4 screens
App Guardian3 screens

Verdict

The call

The clearest difference is price: App Guardian at Free against 计算器 EMMO's $1.99. App Guardian also leads on update cadence (weekly vs monthly). 计算器 EMMO's advantage is in-app purchases (none vs 3) and ratings volume (20 vs 1). On rating, 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

App Guardian is free to download; 计算器 EMMO costs $1.99 up front. App Guardian sells 3 in-app purchases, starting at $0.99 per 7 days. 计算器 EMMO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for 计算器 EMMO against 5.0 for App Guardian. That said, the two scores are not equally well evidenced: 计算器 EMMO has 20 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

计算器 EMMO ships an update monthly, App Guardian weekly. The most recent releases landed on October 27, 2026 and September 14, 2026 respectively.

Scorecard6 real differences · 4 level
计算器 EMMO versus App Guardian: the parameters behind the verdict, then further details
Parameter计算器 EMMOApp Guardian
Price$1.99Free — better
Rating5.0 (20 ratings)5.0 (1 ratings) — better
Positive reviews85.2% of reviews—
Number of ratings20 — better1
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better16
Further details — not scored
Size10 MB23 MB
Age rating4+4+
DeveloperEMMO Corp.青伟 刘

Customer experience

计算器 EMMO

All ratings20 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews27 reviews
Positive85.2%
Neutral11.1%
Negative3.7%

App Guardian

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

计算器 EMMO

No in-app purchases

3 purchases

App Guardian

Subscriptions2
  • App Guardian & Lock (Weekly)3 Days trial$0.997 Days
  • Annual Membership$6.991 Year
One-time1
  • VIP Member$9.99

Questions

Is 计算器 EMMO free?
计算器 EMMO costs $1.99, with no in-app purchases.
Is App Guardian free?
App Guardian is free to download, with in-app purchases available.
Which has better reviews, 计算器 EMMO or App Guardian?
App Guardian is rated higher. 计算器 EMMO averages 5.0 out of 5 from 20 ratings, while App Guardian averages 5.0 from 1 ratings.
Do 计算器 EMMO or App Guardian have ads?
Neither 计算器 EMMO nor App Guardian shows ads.
Which is updated more often, 计算器 EMMO or App Guardian?
计算器 EMMO ships an update monthly, and App Guardian weekly. Most recently, 计算器 EMMO was updated on October 27, 2026 and App Guardian on September 14, 2026.

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