Side by side
Lumin vs Speak
Both stand on ai study tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free trial iPhone
Lumin combines document questions, summaries, flashcards, quizzes, and offline reading in an iPhone-focused study app. Its fit depends on having a compatible iPhone and accepting a paid subscription after the unspecified trial.
Visit Lumin
Free trial AndroidiPhoneWeb
Speak focuses on spoken language practice, with feedback and a progression from phrases to conversation. The seven-day trial offers a short evaluation period, but ongoing use requires a paid subscription whose price depends on plan and region.
Visit SpeakThe facts
| Lumin | Speak | |
|---|---|---|
| Free plan | Not published | A free trial |
| Open source | Not published | Not published |
| Runs on | iPhone | Android, iPhone, Web |
| Lowest paid plan | Lumin Yearly Pro: $49.99 a year | Free or on request |
| Plans published | 4 | 5 |
| Maker | Not published | Speak |
| Website | lumin.study | speak.com |
| On ai study tools | #90 of 96 | #86 of 96 |
Lumin: what it does well
- Questions answered from uploaded documents
- Summaries cover PDFs up to 50 pages
- Generates flashcards and quizzes
- Offline reader for generated materials
- On-device AI for study chats
What to know first
- Requires iOS 26.0 or later
- macOS compatibility is not verified
- Paid subscriptions
- Trial duration is unspecified
Speak: what it does well
- Provides real-time pronunciation and phrasing feedback.
- Available on Android, iOS, and web.
- Offers six languages for English speakers.
- Premium includes AI conversation practice and progress tracking.
- Premium Plus includes unlimited personalized review.
What to know first
- There is no free plan.
- A paid subscription is required after the seven-day trial.
- Subscription pricing varies by plan, region, and promotions.