Comparison

FlashGram vs Sentence Monster

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

Head to head
About

FlashGram

This app offers interactive grammar quizzes for children, featuring over 100 questions on various parts of speech. Its colorful, animated design and touchable answers make learning engaging for young minds.

Highlights
  • Over 100 grammar questions
  • Covers nouns, verbs, pronouns, adjectives
  • Short, touchable answers
  • Colorful and animated design
  • Engaging for young children
Features
Read full description

FlashGram is a fun way to quiz young children (even older ones) on their language arts skills. FlashGram contains over 100 grammar questions covering nouns, verbs, pronouns and adjectives. FlashGram is made up of short questions with touchable answers (no text input required). FlashGram is colorful and animated and will hold the interest of a young child.

About

Sentence Monster

This app helps language learners improve their writing skills by practicing vocabulary in context. It provides personalized sentence-writing exercises, feedback on accuracy, and targeted reviews for words that need more attention. The goal is to build active recall and confidence in using new words.

Highlights
  • Sentence-based vocabulary practice
  • Personalized review of mistakes
  • AI-generated sentence assignments
  • Writing feedback for accuracy
  • Progress and vocabulary insights
  • Support for multiple learning languages
Features
Read full description

Sentence Monster helps language learners turn vocabulary into sentences they can actually write. Knowing a word is not the same as being able to use it. Sentence Monster gives you short sentence-writing practice, checks your answers, and brings back the words you miss, forget, or still cannot use confidently. Practice with AI-picked sentences tailored to your learning history. Missed, weak, and fading words return through personalized review so you can build active recall instead of only recognizing words. Key features: - Sentence-based vocabulary practice - Personalized review from mistakes and weak words - AI-generated sentence assignments algorithm - Writing feedback for sentence accuracy - Progress and vocabulary insight - Practice across multiple learning languages Sentence Monster is built for learners who freeze when writing, even though they already know many words. Write the sentence, get feedback, and keep repeating the words that need more work. Supported learning languages: English, Korean, Japanese, Chinese, Spanish, French, German, Italian, Portuguese, Dutch, Polish, Turkish, Indonesian, Vietnamese, and Russian. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

FlashGram4 screens
Sentence Monster4 screens

Verdict

The call

The clearest difference is price: Sentence Monster at Free against FlashGram's $0.99. Sentence Monster also leads on update cadence (every 3 weeks vs every 7 months). FlashGram's advantage is rating (4.0 vs 1.5) and iOS requirement (12.0 vs 15.1). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Sentence Monster is free to download; FlashGram costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

FlashGram holds the better App Store score, 4.0 against 1.5. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

UpkeepUpdate frequency

FlashGram ships an update every 7 months, Sentence Monster every 3 weeks. Both last shipped on October 31, 2026.

Scorecard5 real differences · 5 level
FlashGram versus Sentence Monster: the parameters behind the verdict, then further details
ParameterFlashGramSentence Monster
Price$0.99Free — better
Rating4.0 (3 ratings) — better1.5 (2 ratings)
Positive reviews66.7% of reviews—
Number of ratings3 — better2
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.1
Further details — not scored
Size5 MB35 MB
Age rating4+12+
DeveloperPalaSoftware Inc.MINHYEONG YU

In-app purchases

None

FlashGram

No in-app purchases

None

Sentence Monster

No in-app purchases

Questions

Is FlashGram free?
FlashGram costs $0.99, with no in-app purchases.
Is Sentence Monster free?
Sentence Monster is free to download, with no in-app purchases.
Which has better reviews, FlashGram or Sentence Monster?
FlashGram is rated higher. FlashGram averages 4.0 out of 5 from 3 ratings, while Sentence Monster averages 1.5 from 2 ratings.
Do FlashGram or Sentence Monster have ads?
Neither FlashGram nor Sentence Monster shows ads.
Which is updated more often, FlashGram or Sentence Monster?
FlashGram ships an update every 7 months, and Sentence Monster every 3 weeks. Most recently, FlashGram was updated on October 31, 2026 and Sentence Monster on October 31, 2026.

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