Engineering Wise vs DOKKAI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engineering Wise
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Engineering Wise is the engineering equations library in your pocket. Currently, Engineering Wise consists of more than 100 equations about Statics, Dynamics, Strength of Materials, Thermodynamics, Heat Transfer, and Fluid Mechanics. The app offers descriptions of each equation. It also provides information of each variable of the equations. Users can bookmark equations for offline use. There are also useful tables included for miscellaneous information. In the next few months, the app will branch to specific engineering disciplines (Civil Engineering, Electrical Engineering, etc).
DOKKAI
Master Japanese for JLPT exams with this app's progressive learning system. It offers articles, audio, and offline support, adapting to your pace from N5 to N1.
- Progressive learning system (N5-N1)
- Comparative approach to content
- Responsive design for all devices
- Enhanced audio learning with furigana
- Rich content library (36 articles)
- Offline support
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Build your Japanese reading and listening skills with DOKKAI. Choose articles for JLPT levels N5–N1, check word meanings as you read, and practice with available article audio. • Read articles suited to your level. • Show or hide furigana to match your needs. • Tap words for dictionary definitions and meaning translations. • Explore grammar explanations and use sentence playback controls. Version 7.0.0 refines navigation, player controls and settings. Liquid Glass is available on supported iOS devices; other devices use a suitable background style. Button feedback and background appearance adapt to system motion and transparency preferences. Sign-in and sign-up screens are easier to use with the keyboard open, and you can now delete your account from the account screen.
Screenshots
Verdict
The clearest difference is update cadence: DOKKAI at every 3 days against Engineering Wise's fortnightly. Engineering Wise's advantage is iOS requirement (6.0 vs 16.4). 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.
Engineering Wise ships an update fortnightly, DOKKAI every 3 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.
| Parameter | Engineering Wise | DOKKAI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 6.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 7 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Derrick Nicolas | LEI CHEN |
In-app purchases
Engineering Wise
No in-app purchases
DOKKAI
No in-app purchases
Questions
Is Engineering Wise free?
Is DOKKAI free?
Do Engineering Wise or DOKKAI have ads?
Which is updated more often, Engineering Wise or DOKKAI?
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