Akerun App vs SoloWatermark
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
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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
SoloWatermark
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SoloWatermark lets you add watermarks to photos on your iPhone. Built around the idea “your signature on your photos,” you can place text or images on a selected photo, adjust position, size, and opacity, then save straight to your photo library. FREE FEATURES • Text watermarks Enter any text and adjust font and opacity to overlay it on your photos. SOLOWATERMARK PRO FEATURES • Image watermarks Overlay transparent PNGs or background-removed images as watermarks. • Zoom-style tiled watermarks Repeat your watermark across the entire photo. • Markup Draw freely on photos (iOS). • QR code watermarks Embed a URL as a QR code on your photo. • Background removal Extract the subject and save as a transparent PNG (processed on-device). WHO IT’S FOR • Anyone who wants credits or signatures before posting to social media • Sellers and creators watermarking listing or portfolio photos • People looking for a simple, ready-to-use watermark app PRIVACY Photo selection, editing, and saving all happen on your device. We do not upload your photos to developer servers. ABOUT SOLOWATERMARK PRO SoloWatermark Pro is an auto-renewing subscription. Subscribing unlocks all Pro features listed above. Pricing is shown on the purchase screen. • Payment is charged to your Apple ID account • Subscription renews automatically unless canceled at least 24 hours before the end of the current period • Renewal charges are billed within 24 hours before the end of the current period unless canceled in Account Settings • Manage or cancel anytime in App Store account settings after purchase • Any unused portion of a free trial may be forfeited when you purchase a subscription Terms of Service and Privacy Policy are available in the app Settings. • Terms of Service: https://pacific-sandalwood-6de.notion.site/397a1df91a07803da4eadc7142b45b1c • Privacy Policy: https://pacific-sandalwood-6de.notion.site/de0f01e36f5d4d2ebaeed98414a568aa
Screenshots
Verdict
The clearest difference is in-app purchases: Akerun App at none against SoloWatermark's 2. SoloWatermark's advantage is update cadence (weekly vs every 6 weeks). On price, ads, device support and iOS requirement 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. SoloWatermark sells 2 in-app purchases, starting at $1.99 per month. Akerun App asks for nothing beyond the download.
Akerun App ships an update every 6 weeks, SoloWatermark weekly. The most recent releases landed on October 21, 2026 and October 4, 2026 respectively.
| Parameter | Akerun App | SoloWatermark |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 22.2% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 113 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Photosynth Inc. | JUNICHI HASHIMOTO |
In-app purchases
Akerun App
No in-app purchases
SoloWatermark
- Premium Membership$1.991 Month
- Premium Plan 1 Year7 Days trial$11.991 Year









