Comparison

Akerun App vs Simple Fun Calculator

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

Head to head
About

Akerun App

Unlock various spaces like homes, offices, gyms, and schools using your smartphone as a key. Share digital keys with customizable expiration dates and manage access history for enhanced security. Supports various electronic locks and automatic doors.

Highlights
  • Smartphone as a key
  • IC card integration
  • Digital key sharing
  • Access history tracking
  • Enhanced security features
  • Remote permission deletion
Read full description

Akerun Appを使うことで、自宅やオフィス、フィットネスジムやシェアスペース、学校などの様々な空間にアクセスすることができます。 【特長】 ■スマートフォンが鍵に アプリでドアの鍵を開けることができます。Akerunアカウントで合鍵を受け取ることで、アクセスできる空間を増やすことができます。様々な電気錠や自動ドア、ゲートに対応しています。 ■ICカードが鍵に お手持ちの交通系ICカード等を登録して鍵として利用することができます。スマートフォンにICカードをかざすことで簡単に登録できます。 ■合鍵をクラウドで管理 スマートフォンで電子的な合鍵をつくり、すぐに送ることができます。また、合鍵には有効期限を設定することもできます。 ■アクセス履歴をクラウドで管理 「いつ」「誰が」「どこに」出入りしたのかを確認することができます。 ■セキュリティを強化 ログイン時の2段階認証や紛失時の遠隔での権限削除、などにより、物理鍵運用よりもセキュリティを高めることができます。 【対応OS】 iOS16.0 以上

About

Simple Fun Calculator

Features
Read full description

A simple, clean calculator — with your own personal touch. [Core Features] · Tax calculation (8% / 10% switchable) · Discount calculation · Memory function (up to 10 values, tap to add to expression) · Intuitive button layout [Memory Function] Save your frequently used numbers with a single tap — store up to 10 values at once. Tap any saved number to instantly add it to your expression. [Customization (Partially Paid)] Set unique sounds and vibrations for each button. Choose from a variety of sounds: click, tock, pop, chime, and more. Pick your vibration style: soft, light, medium, heavy, and beyond. Rearrange buttons freely so your most-used functions are always within reach. You can preview sounds, vibrations, and button layouts for free. Go Premium (¥280, one-time) to save your settings permanently. [Premium Plan — ¥280 (One-time)] · Save & apply your custom button layout · Assign sounds and vibrations to individual buttons · Yours forever with a single purchase Simple, fun, and just a little bit satisfying.

Screenshots

Akerun App4 screens
Simple Fun Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Simple Fun Calculator at every 2 days against Akerun App's every 6 weeks. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Akerun App ships an update every 6 weeks, Simple Fun Calculator every 2 days. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
Akerun App versus Simple Fun Calculator: the parameters behind the verdict, then further details
ParameterAkerun AppSimple Fun Calculator
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews22.2% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.6
Further details — not scored
Size113 MB1 MB
Age rating4+4+
DeveloperPhotosynth Inc.tsuboi toshihiro

In-app purchases

None

Akerun App

No in-app purchases

None

Simple Fun Calculator

No in-app purchases

Questions

Is Akerun App free?
Akerun App is free to download, with no in-app purchases.
Is Simple Fun Calculator free?
Simple Fun Calculator is free to download, with no in-app purchases.
Do Akerun App or Simple Fun Calculator have ads?
Neither Akerun App nor Simple Fun Calculator shows ads.
Which is updated more often, Akerun App or Simple Fun Calculator?
Akerun App ships an update every 6 weeks, and Simple Fun Calculator every 2 days. Most recently, Akerun App was updated on October 13, 2026 and Simple Fun Calculator on October 3, 2026.

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