BeetLog vs メダ活帳
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BeetLog
Record and manage beetle and stag beetle breeding with detailed logs, breeding management, and lineage trees. Features include photo-based growth tracking, automatic calculation of hatching dates, and data export. Share breeding records with others via QR codes.
- Individual and larva lot registration
- Photo-based breeding logs
- Breeding management with task notifications
- Automatic lineage tree generation
- Data export (QR labels, reports, CSV)
- Breeding record transfer via QR code
- Customizable breeding manuals
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BeetLog(ビートログ)は、カブトムシ・クワガタムシの飼育を記録・管理するためのアプリです。 ■ 個体・幼虫ロット登録 アカウント作成なしですぐに始められます。アカウント作成で個体も幼虫ロットも無制限で登録できます。 ■ 飼育記録 体重・温度・フェーズの変化を写真付きで記録。タイムラインで成長の過程を振り返れます。 ■ ブリーディング管理 ペアリング・産卵セット・幼虫ロットをまとめて管理。割り出し予定日の自動計算やタスク通知にも対応。 ■ 累代ツリー 累代関係を3世代にわたって自動でツリー表示。血統の流れがひと目でわかります。 ■ 出力機能 QR付き管理ラベル、販売札、飼育レポート、CSVなど多彩な出力に対応。 ■ 譲渡機能 QRコードまたは引換コードで、写真・メモ・血統情報ごと飼育記録を次のブリーダーへ引き継げます。 ■ 飼育マニュアル 種ごとに飼育ノウハウを蓄積。あなただけのマニュアルを作成できます。 ■ Premium(月額480円 / 年額4,800円) ・飼育写真をすべてクラウドに保存 ・機種変更や機器破損でも写真を復元 ・過去の記録の履歴(写真・成長記録・メモ)をずっと見返せる ・譲渡で飼育写真もまるごと引き継げる ・出力機能が回数無制限 ・飼育マニュアルを無制限に作成 ・広告非表示 サブスクリプションは期間終了の24時間前までに解約しない限り自動更新されます。解約は各ストアのアカウント設定からいつでも行えます。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
メダ活帳
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Medaka Log is a breeding and lineage manager for medaka (Japanese rice fish / ricefish) keepers. Start simply by logging the variety and count in each container, then grow into full lineage management — crosses, generations (F-values), and family trees. Note: The app interface is in Japanese. - Daily records: manage containers and lots; log water changes, feeding, and health checks in one tap, with photos - Spawning & hatch forecast (guideline): from accumulated water temperature, see the estimated hatch date and progress, with local reminders - Lineage: auto-numbered generations (F1, F2…), a generation tree, and retention-rate trends from selection records - Genotype prediction (reference, known recessive/dominant traits only) and inbreeding coefficient (COI) - 3-generation pedigree PDF (variety, F-value, COI reference) to attach to the fish you sell - Container QR labels for quick on-site logging - Sales records with CSV export; a per-line dashboard for counts, sales, and hatch rate Records are stored on device and no account is required. An optional cloud share can sync records and photos across your own devices, and an optional weather link can estimate outdoor water temperature. Hatch, genetic, and COI predictions are guidelines only. [Terms of Use / Privacy] Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yoooooui.github.io/medaka-app/privacy.html Medaka Log Pro is a one-time purchase. Cloud Sharing is a monthly auto-renewable subscription; it renews automatically unless canceled at least 24 hours before the end of the period. You can manage or cancel it in the App Store under Subscriptions.
Screenshots
Verdict
The clearest difference is ads: メダ活帳 at none against BeetLog's shown. BeetLog's advantage is update cadence (every 2 days vs every 3 weeks). On price, in-app purchases, 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. BeetLog sells 2 in-app purchases, starting at $2.99 per month and メダ活帳 sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
BeetLog ships an update every 2 days, メダ活帳 every 3 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | BeetLog | メダ活帳 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 90 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Breeders Innovation | Yoichi Saito |
In-app purchases
BeetLog
- Premium(月額)$2.991 Month
- Premium(年額)$29.991 Year
メダ活帳
- クラウド共有14 Days trial$1.991 Month
- メダ活帳プロ$3.99





