Comparison

Mathhub vs Rigl

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mathhub

Features
Read full description

Unlock your personal AI study & work assistant. Whether you’re a student tackling homework or a professional managing tasks, this app helps you learn, create, and work smarter. What you can do with this AI app: * Solve math problems instantly with step-by-step explanations * Write and improve essays with AI writing support * Summarize text & YouTube videos into clear insights * Translate languages with accurate AI translation * Enhance your code and debug faster * Generate content for school, work, or personal projects * Upload files & ask questions to extract key details * Chat for research, work, or study anytime Designed for Students & Professionals * Students: Get homework help, study assistance, essay writing, and language learning support. * Professionals: Save time with summaries, translations, content creation, and productivity tools. Your all-in-one AI study companion, homework helper, and work assistant — right in your pocket. PREMIUM SUBSCRIPTION - You can subscribe to get unlimited access to certain app features. - Subscriptions are billed Weekly, Monthly or Yearly at the rate selected depending on the subscription plan. Privacy Policy: https://standardiosapps.blogspot.com/2023/12/privacy-policy.html EULA & Terms of Use: https://standardiosapps.blogspot.com/2023/12/terms-of-use.html

About

Rigl

This app helps you master English phrasal and irregular verbs for spontaneous speech. Practice real-life prompts, get instant feedback, and learn natural expressions through context, not just memorization.

Highlights
  • Practice phrasal verbs in speaking exercises
  • Drill irregular verb forms in real sentences
  • Train spontaneous answers
  • Get instant feedback and alternatives
  • Use hints when stuck
  • Practice by typing or voice
  • Browse verb catalogs with translations
Features
Read full description

Rigl-lingvo is built for one specific goal: helping you actually use English phrasal verbs and irregular verbs in spontaneous speech. Instead of memorizing long lists, you practice short real-life prompts, type or say your answer, get instant feedback, and learn the natural version of the phrase. Rigl focuses on phrasal verbs, irregular verb forms, and everyday English expressions that are hard to master through traditional exercises. Rigl is different from general language apps like Duolingo, Babbel, Busuu, Memrise, or ELSA Speak. Those apps are useful for broad language learning, vocabulary, grammar, or pronunciation. Rigl is narrower and more practical: it trains you to recall phrasal verbs and the right irregular forms quickly, and use them naturally in context. What you can do in Rigl: • Practice English phrasal verbs in short speaking-style exercises • Drill irregular verbs and their three forms (go – went – gone) in real sentences • Train spontaneous answers instead of passive recognition • Get feedback when your answer is almost right or unnatural • See better, more natural alternatives • Use hints when you get stuck • Practice by typing or using your voice • Browse focused catalogs of phrasal verbs and irregular verbs with translations • Learn through context, not isolated flashcards Supported interface and explanation languages: Chinese, French, German, Italian, Portuguese, Russian, and Spanish. Rigl is designed for learners who already know some English but still freeze when they need to use natural expressions — or the right verb form — in real conversation. If you want to stop recognizing phrasal verbs and irregular verbs only after you see them — and start using them yourself — Rigl is made for that.

Screenshots

Mathhub4 screens
Rigl3 screens

Verdict

The call

The clearest difference is in-app purchases: Rigl at none against Mathhub's 3. Rigl also leads on update cadence (weekly vs every 4 months). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mathhub sells 3 in-app purchases, starting at $4.99 per 7 days. Rigl asks for nothing beyond the download.

UpkeepUpdate frequency

Mathhub ships an update every 4 months, Rigl weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Mathhub versus Rigl: the parameters behind the verdict, then further details
ParameterMathhubRigl
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.215.1 — better
Further details — not scored
Size68 MB37 MB
Age rating4+17+
DeveloperShobha VastarparaIlia Bakanov

In-app purchases

3 purchases

Mathhub

Subscriptions3
  • 1 Week Premium3 Days trial$4.997 Days
  • 1 Month Premium3 Days trial$9.991 Month
  • 1 Year Premium3 Days trial$59.991 Year
None

Rigl

No in-app purchases

Questions

Is Mathhub free?
Mathhub is free to download, with in-app purchases available.
Is Rigl free?
Rigl is free to download, with no in-app purchases.
Do Mathhub or Rigl have ads?
Neither Mathhub nor Rigl shows ads.
Which is updated more often, Mathhub or Rigl?
Mathhub ships an update every 4 months, and Rigl weekly. Most recently, Mathhub was updated on October 28, 2026 and Rigl on October 31, 2026.

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