Comparison

Index vs SumAI

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

Head to head
About

Index

Read full description

Close all those open tabs without the fear of forgetting them. Just click, Index and search later. Find a recipe you want to try? A restaurant? That smoothy blender you’ve been waiting to buy... Index it, and search for “food” later to find it all. Happy Indexing!

About

SumAI

This app transforms YouTube videos into concise summaries, saving you time and enhancing your learning. It offers AI-powered key point extraction, custom quiz generation, and automatic flashcard creation for efficient revision. Ideal for students and professionals seeking to learn faster from video content.

Highlights
  • Instant video summaries
  • AI key point extraction
  • Custom quiz creation
  • Automatic flashcard generation
  • Learning progress tracking
  • Offline summary access
Features
Read full description

Turn YouTube videos, web pages and PDFs into clear summaries in seconds. Then ask questions, study with quizzes and flashcards, and see the big picture in a mind map. Paste a link or pick a PDF, choose a style and a language, and SumAI's AI reads the whole thing for you: the transcript of a video, the text of an article or a document. You get a structured summary with the key points and the details that matter, so you can skip the hour-long video and get straight to what you need. KEY FEATURES • Summaries of YouTube videos, Shorts, live streams, web articles and PDFs • Five summary styles: TL;DR, Standard, Detailed, Study Guide and Chapters • Chapters and key moments: tap a time to jump to that part of the video • Ask AI: chat with any video or document and get answers with timestamps • Mind map: see the whole topic at a glance and share it as an image • Quiz and flashcards generated from every summary • Full transcript with timestamps, ready to copy • Your language: summaries in more than 60 languages, whatever language the source is in • Listen: have the summary read aloud at your own speed • Export as PDF or Markdown, or share and copy • Library with search, favorites and tags • Share to SumAI straight from YouTube or Safari • Optional Sign in with Apple to keep your library safe across devices PERFECT FOR • Students turning lectures, tutorials and readings into study guides • Professionals catching up on talks, interviews, reports and articles • Lifelong learners who want the key takeaways fast HOW IT WORKS 1. Copy a YouTube or web link, or pick a PDF 2. Paste it into SumAI and choose the style and language 3. Read the summary, ask questions, then test yourself with a quiz or flashcards Videos need captions or auto-generated subtitles. PDFs need selectable text. Privacy Policy: https://sumai-4bbaa.web.app/privacy.html Terms of Use: https://sumai-4bbaa.web.app/terms.html Questions? Contact us at net29apps@gmail.com

Screenshots

Index3 screens
SumAI4 screens

Verdict

The call

The clearest difference is in-app purchases: Index at none against SumAI's 2. SumAI's advantage is update cadence (every 6 days vs every 15 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. SumAI sells 2 in-app purchases, starting at $2.99 per 7 days. Index asks for nothing beyond the download.

UpkeepUpdate frequency

Index ships an update every 15 months, SumAI every 6 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 7 level
Index versus SumAI: the parameters behind the verdict, then further details
ParameterIndexSumAI
PriceFreeFree
Rating—2.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 15 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size1 MB35 MB
Age rating17+4+
DeveloperJoseph ThomMEVLUT CIFCIBASI

In-app purchases

None

Index

No in-app purchases

2 purchases

SumAI

Subscriptions2
  • Weekly Premium$2.997 Days
  • Yearly Premium7 Days trial$29.991 Year

Questions

Is Index free?
Index is free to download, with no in-app purchases.
Is SumAI free?
SumAI is free to download, with in-app purchases available.
Do Index or SumAI have ads?
Neither Index nor SumAI shows ads.
Which is updated more often, Index or SumAI?
Index ships an update every 15 months, and SumAI every 6 days. Most recently, Index was updated on November 7, 2026 and SumAI on November 10, 2026.

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