Akerun App vs Simple Fun Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Smartphone as a key
- IC card integration
- Digital key sharing
- Access history tracking
- Enhanced security features
- Remote permission deletion
Read full descriptionHide 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
Simple Fun Calculator
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Akerun App | Simple Fun Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 113 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Photosynth Inc. | tsuboi toshihiro |
In-app purchases
Akerun App
No in-app purchases
Simple Fun Calculator
No in-app purchases









