O vs ClassLOG
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
O
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「O:derストア」はO:derを管理、運用するためのサービスです。 ※O:der加盟店舗の方のみご利用可能なアプリとなります。詳しくはO:derホームページのお問い合わせフォームよりご連絡ください。
ClassLOG
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No account required. No ads. No in-app purchases. ClassLOG helps you keep a 12-year record of school names, classes, and teachers. During school events, parent-teacher meetings, or when filling out school forms, you can quickly check their class and teacher information. Manage up to 4 children in separate profiles to keep everything organized. Your data is stored only on your device and is never uploaded to any server. Key Features: • View 12 years of records at a glance • Manage up to 4 individual profiles • Keep records for your children or your own school history • Simple and friendly UI • Adaptable to different school systems • Supports input in Japanese, Korean, Chinese (Simplified and Traditional), Thai, and Latin characters (such as English, French, and Spanish) ClassLOG is free to use.
Screenshots
Verdict
The clearest difference is update cadence: ClassLOG at weekly against O's every 4 months. O's advantage is iOS requirement (10.0 vs 15.0). 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.
O ships an update every 4 months, ClassLOG weekly. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.
| Parameter | O | ClassLOG |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 142 MB |
| Age rating | 4+ | 4+ |
| Developer | Showcase Gig Inc. | Shin Naka |
In-app purchases
O
No in-app purchases
ClassLOG
No in-app purchases
