Comparison

ACalcM vs 常時安全セキュリティ24

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

Head to head
About

ACalcM

This calculator app enhances standard functionality with an editable list to track numbers and operators. It allows for easy modification of entries, row insertion, and calculation sharing via email. Advanced features include memory functions, rounding options, and design customization.

Highlights
  • Editable calculation list
  • Memory function
  • Row insert function
  • Email calculation results
  • Rounding function
  • Design customization
Features
Read full description

This app is an extended version of ACalc. This calculator app features a list. The numbers and operators you use remain in the list and can be independently edited or added. Swipe the button to the right to change its position. In-App Purchases: (iPhone) available in three lists by deleting the ad. It will be possible to activate the "multifunctional" in the settings screen. Design changes. Addition of functions such as % button and single digit delete button. Diversification of design customization. [Features explained] Memory function -------------------------------------------------------- Using the memory function allows the following calculations: For example, When performing the function (250×100)+(350×100) Typing 300×8 [M+] button 400×8 [M+] button 800×8 [M+] button -------------------------------------------------------- Row insert function -------------------------------------------------------- Long tap on a cell to insert a row E-mail function(Swipe up the screen from the bottom) -------------------------------------------------------- Allows you to e-mail content shown onscreen. Choose from text e-mails or picture e-mails. Rounding function -------------------------------------------------------- If choosing to use rounding, the final figure is not rounded – instead, each line is rounded when calculating. Example: If typing 1,450×0.75×2, If specifying 0 places after the decimal point with 5/4 rounding: 1,450×0.75=1,088 1,088×2=2,176 When set to F (maximum displayable) 1,450×0.75=1,087.5 1,087.5×2=2,175

About

常時安全セキュリティ24

Protect your iPhone and iPad from online threats with this security service. It offers browser and banking protection for safe online transactions, and parental controls to manage children's device usage and access to inappropriate websites.

Highlights
  • Browser protection
  • Banking protection
  • Parental controls
  • Privacy protection
  • Password management
  • Personal information leak monitoring
  • SMS scam protection
Features
Read full description

「常時安全セキュリティ24」は、iPhoneやiPadをインターネット上の脅威から保護するセキュリティサービスです。 ■特長  ・ネットバンキングが不安・苦手なご家族も安心!   ブラウザ保護およびバンキング保護で、安全にオンラインバンキングやオンラインペイメントを利用できます。  ・お子様の「ネットの使いすぎや不適切サイトへのアクセス」を防止!   お子様が使うデバイスの利用時間や不適切サイトへの接続制限をリモートから簡単に設定できます。 ■主な機能  ・安全なインターネット利用  ・バンキングプロテクション  ・ペアレンタルコントロール  ・プライバシーの保護(※)  ・パスワード管理機能(※)  ・個人情報流出監視機能(※)  ・SMS詐欺保護機能(※)  ※一部のお客様のみご利用いただける機能となります。 ■本サービスについてのサポート https://support.nifty.com/support/madoguchi/mail/

Screenshots

ACalcM2 screens
常時安全セキュリティ244 screens

Verdict

The call

The clearest difference is review sentiment: ACalcM at 90% against 常時安全セキュリティ24's 25%. ACalcM also leads on iOS requirement (15.6 vs 18.0). 常時安全セキュリティ24's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence 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

Both are free to download. ACalcM sells 1 one-off in-app purchase. 常時安全セキュリティ24 asks for nothing beyond the download.

UpkeepUpdate frequency

ACalcM ships an update every 8 months, 常時安全セキュリティ24 every 4 months. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 5 level
ACalcM versus 常時安全セキュリティ24: the parameters behind the verdict, then further details
ParameterACalcM常時安全セキュリティ24
PriceFreeFree
Rating5.0 (26 ratings) — better—
Positive reviews90.0% of reviews — better25.0% of reviews
Number of ratings26 — better—
Update frequencyEvery 8 monthsEvery 4 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size13 MB308 MB
Age rating4+4+
DeveloperAsoft.iOSNIFTY Corporation

Customer experience

ACalcM

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

常時安全セキュリティ24

Written reviews16 reviews
Positive25.0%
Neutral6.3%
Negative68.8%

In-app purchases

1 purchases

ACalcM

One-time1
  • Remove Ads$3.99
None

常時安全セキュリティ24

No in-app purchases

Questions

Is ACalcM free?
ACalcM is free to download, with in-app purchases available.
Is 常時安全セキュリティ24 free?
常時安全セキュリティ24 is free to download, with no in-app purchases.
Do ACalcM or 常時安全セキュリティ24 have ads?
ACalcM shows ads; 常時安全セキュリティ24 does not.
Which is updated more often, ACalcM or 常時安全セキュリティ24?
ACalcM ships an update every 8 months, and 常時安全セキュリティ24 every 4 months. Most recently, ACalcM was updated on September 23, 2026 and 常時安全セキュリティ24 on September 9, 2026.

Other comparisons