DRAGON vs OpeningBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DRAGON
This app helps teachers track student sessions in real-time for accurate and timely uploading to the NY DOE. It streamlines administrative tasks for educators.
- Real-time session tracking
- Student data management
- NY DOE reporting integration
- Teacher administrative tool
- Timely data upload
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DRAGON allows for an agency teacher to keep track of their sessions with students on a real-time basis so that it can be uploaded to NY DOE in a timely and accurate basis.
OpeningBook
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OpeningBook is a clean, offline reference and trainer for chess openings. BROWSE EVERYTHING • Thousands of named openings and variations, organized by ECO volume (A–E), family, and line — sourced from the open Lichess openings database. • Step through any line move-by-move on a real, playable board. • Read key ideas and classic traps for the major openings. SEARCH & FILTER • Find any opening by name, ECO code, or move sequence. • Filter by line length with a simple move-count slider. TRAIN YOUR REPERTOIRE • Add lines to your training set as White or Black. • Drill them in a play-your-side-vs-app loop. • Spaced repetition brings each line back for review at the right time. 100% offline. No account, no ads, no tracking.
Screenshots
Verdict
The clearest difference is in-app purchases: DRAGON at none against OpeningBook's 1. DRAGON also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads 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. OpeningBook sells 1 one-off in-app purchase. DRAGON asks for nothing beyond the download.
| Parameter | DRAGON | OpeningBook |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (85 ratings) — better | — |
| Positive reviews | 28.6% of reviews | — |
| Number of ratings | 85 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 170 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Shira Gulkowitz | Zhenghong Peng |
In-app purchases
DRAGON
No in-app purchases
OpeningBook
- Training Mode$3.99
