Comparison

AnnoReader vs ClassLens

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

Head to head
About

AnnoReader

This app visually breaks down English sentences to improve grammar understanding and reading comprehension. It offers annotation, translation, and text-to-speech features to aid learners in mastering sentence structure and fluency.

Highlights
  • Visual syntax analysis of sentences
  • Phrase and clause translation
  • Text-to-speech with accent options
  • AI grammar checking
  • OCR for text capture
  • Dictionary lookup and phrasal verb meanings
Features
Read full description

AnnoReader: English Grammar Learning Tool AnnoReader is an "English Grammar Learning Tool" designed for English language learners. It helps improve reading comprehension by making sentence structure and modification relationships instantly visible. Purpose This app was developed to address common challenges faced by English learners, such as: - Wanting to learn English grammar more effectively - Difficulty identifying phrases and clauses - Trouble distinguishing the five sentence patterns (SVOC) - Preparing for long passages in tests like TOEIC - Desire to read more fluently With translation and text-to-speech features, AnnoReader can also be used for listening and speaking practice beyond grammar study. Key Features English Annotation (Syntax Analysis) - Visualizes clauses, phrases, and modification relationships - Displays parts of speech for words - Provides dictionary lookup for words - Shows meanings of phrasal verbs - Highlights the five sentence patterns (SVOC) - Underlines compound words Translation - Displays translations by phrase and clause units - Supports various languages, including Japanese Text-to-Speech - High-quality native speaker voice for reading English text - Four accent options: American, British, Australian, and Indian - Allows simultaneous grammar and listening practice - Repeat function and timed rewind feature for enhanced learning AI Grammar Check - AI-powered checking of inputted English text - Easily identifies grammatical errors and typos Camera Function (OCR) - Captures English text from books or documents using the built-in camera - Performs annotation on the captured text Multiple Input Methods - Direct text input - Paste from clipboard - Import text via iOS share function Customization Settings - Adjustable font and annotation settings to suit user preferences For more information: - Terms of Service: https://annoreader.com/ja/terms_of_service - Privacy Policy: https://annoreader.com/ja/privacy

About

ClassLens

Features
Read full description

新しい時間割アプリ登場! もう時間割の管理だけでは物足りない!私たちの新しいアプリは、授業の時間割を入力するだけでなく、授業ごとに写真を自動で整理してくれます。授業時間を設定するだけで、授業中に撮った写真が自動で各授業フォルダに分類されるので、探す手間がなく、勉強の効率アップ間違いなし! デフォルトのカメラで撮った授業の写真はどの授業の写真かいつの写真かわからなくなりませんか? このアプリを使えばどの授業の写真か一目瞭然。いつ撮った写真かもわかりやすく表示されます。

Screenshots

AnnoReader4 screens
ClassLens3 screens

Verdict

The call

The clearest difference is in-app purchases: ClassLens at none against AnnoReader's 4. AnnoReader's advantage is device support (3 vs 1). On price, update cadence, ads 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. AnnoReader sells 4 in-app purchases, starting at $1.49 per month. ClassLens asks for nothing beyond the download.

UpkeepUpdate frequency

AnnoReader ships an update monthly, ClassLens every 3 weeks. The most recent releases landed on June 9, 2026 and May 16, 2026 respectively.

Scorecard2 real differences · 6 level
AnnoReader versus ClassLens: the parameters behind the verdict, then further details
ParameterAnnoReaderClassLens
PriceFreeFree
Positive reviews69.2% of reviews—
Update frequencyMonthlyEvery 3 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.4
Further details — not scored
Size95 MB3 MB
Age rating4+4+
DeveloperHironobu SaitoAtsuhiro Hasebe

In-app purchases

4 purchases

AnnoReader

Subscriptions4
  • Basic(monthly)7 Days trial$1.491 Month
  • Basic Plus(Monthly)7 Days trial$3.491 Month
  • Pro(Monthly)$4.991 Month
Show 1 more
  • Pro Plus (Monthly)$11.991 Month
None

ClassLens

No in-app purchases

Questions

Is AnnoReader free?
AnnoReader is free to download, with in-app purchases available.
Is ClassLens free?
ClassLens is free to download, with no in-app purchases.
Do AnnoReader or ClassLens have ads?
Both AnnoReader and ClassLens show ads.
Which is updated more often, AnnoReader or ClassLens?
AnnoReader ships an update monthly, and ClassLens every 3 weeks. Most recently, AnnoReader was updated on June 9, 2026 and ClassLens on May 16, 2026.

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