Comparison

Strflow vs PDF Indexer

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

Head to head
About

Strflow

This app offers a unique chat-style interface for taking notes, organizing them with tags, and setting reminders. It integrates seamlessly with iOS features and ensures your data is secure and exportable.

Highlights
  • Chat-style note-taking
  • Timeline organization
  • Tagging system
  • Todo lists and reminders
  • Quick capture from anywhere
  • Rich text editor
  • iCloud sync and backup
Features
Read full description

Strflow adopts a chat-style timeline format for incredibly simple and beautiful note-taking. Experience the simplicity of note-taking in a texting-yourself style. # Build Your Timeline As you jot down notes, a personal timeline naturally forms. With tags, you can also create timelines focused on specific topics. Tags can be attached or created from anywhere, and you can easily reorder them with drag & drop in the sidebar. # Todo & Reminders, Naturally in Your Timeline Strflow turns your checklists into a dedicated Todo timeline, so you can easily review tasks, check them off, and add new ones from a single view. You can also set notes for future dates and use them as reminders. Scheduled notes stay hidden until the right time, then gently surface with notifications—right when you need them. # Quick Notes Anywhere Sync quickly and capture notes from anywhere. Open the app and start typing instantly, access Strflow from the share sheet — no need to switch apps. # Native on iOS Strflow is designed natively for iOS, blending perfectly with its look and feel. It also integrates with system features like Apple Shortcuts and the share sheet—making it easy to fit into your workflow. # Your Data, 100% Yours Your data is stored safely on your device and in iCloud. When saved to iCloud, it’s encrypted with your iCloud Keychain. For those using iCloud’s Advanced Data Protection, enjoy the added security of end-to-end encryption. All data can also be exported as Markdown, so you can take it anywhere with no lock-in. # A Powerful Editor Strflow supports a wide range of rich-text editing features, including: • Link previews • Checklists • Note links • Inline formatting (bold, italic, etc.) • Block-level formatting (lists, code blocks, quote blocks, etc.) • Images --- Strflow lets you take unlimited notes for free. By joining Strflow Plus, you’ll unlock encrypted sync and backup via iCloud. Prices may vary by location. Subscriptions will be charged to your credit card via your App Store account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Once activated, subscriptions cannot be canceled. Manage your subscriptions in your App Store Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited upon purchasing a subscription. The lifetime option is a one-time, non-renewing purchase that grants permanent access to Strflow Plus features. --- For any questions or feedback, please feel free to contact us at support@strflow.app. We are eager to assist and connect with you! Privacy policy: https://strflow.app/privacy-policy Terms of use: https://strflow.app/terms

About

PDF Indexer

This app creates fast navigation for PDFs by turning title-to-page mappings into searchable indexes. It allows you to import mappings from various file formats and opens directly to the mapped page within the PDF. All data is stored locally on your device for privacy.

Highlights
  • Search across multiple indexed PDFs
  • Exact, prefix, substring, and alias matching
  • Jump directly to mapped pages
  • Import mappings from CSV, JSON, XLSX, and text
  • Page-offset calibration
  • Mapping correction and export
  • Local-first data storage
Features
Read full description

PDF Indexer turns a separate title-to-page mapping into fast navigation for a PDF. Choose a PDF, add its index, and search titles across your library. On import, the app divides the PDF into private on-device sections at indexed title pages and removes its temporary full-size copy. A result opens only the matching section at the mapped PDF page. Page offsets handle documents whose printed page numbers do not match their PDF positions. Import mappings from CSV, JSON, XLSX, pasted text, or manual entry. Review validation warnings before saving, correct individual rows later, replace a mapping without copying the PDF again, and export a mapping as CSV or JSON. PDF Indexer is local-first. It needs no account and has no publisher-operated analytics or app-run cloud service. Your app library stays in private device storage unless you choose to export a mapping. The free app may show non-personalized banner ads after any required privacy choices. PDFs, mappings, titles, and searches are not sent to the ad service. See the Privacy Policy for operating-system backup details. Highlights: • Search across multiple indexed PDFs • Exact, prefix, substring, and alias matching • Jump directly to mapped pages • CSV, JSON, XLSX, pasted-text, and manual mapping input • Page-offset calibration and bounds validation • Mapping correction, replacement, and export • Missing-file recovery without losing the mapping • Light and dark appearance PDFs and mappings are supplied by the user. PDF Indexer does not include third-party books or indexes.

Screenshots

Strflow4 screens
PDF Indexer4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Indexer at none against Strflow's 4. PDF Indexer also leads on update cadence (every 2 days vs fortnightly) and iOS requirement (16.4 vs 18.0). Strflow's advantage is ads (none vs shown) and ratings volume (51 vs 2). On price, rating 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

Both are free to download. Strflow sells 4 in-app purchases, starting at $1.49 per month. PDF Indexer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Strflow against 5.0 for PDF Indexer. That said, the two scores are not equally well evidenced: Strflow has 51 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Strflow ships an update fortnightly, PDF Indexer every 2 days. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Strflow versus PDF Indexer: the parameters behind the verdict, then further details
ParameterStrflowPDF Indexer
PriceFreeFree
Rating5.0 (51 ratings)5.0 (2 ratings) — better
Positive reviews97.1% of reviews—
Number of ratings51 — better2
Update frequencyFortnightlyEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemiumAd-supported — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.016.4 — better
Further details — not scored
Size73 MB53 MB
Age rating4+4+
DeveloperShingo EguchiMATTHEW BYONG BAE

Customer experience

Strflow

All ratings49 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews34 reviews
Positive97.1%
Neutral0.0%
Negative2.9%

PDF Indexer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Strflow

Subscriptions2
  • Strflow Plus (Monthly)7 Days trial$1.491 Month
  • Strflow Plus (Annual)14 Days trial$14.991 Year
One-time2
  • Strflow Plus (Lifetime, Subscriber)$27.99
  • Strflow Plus (Lifetime)$37.99
None

PDF Indexer

No in-app purchases

Questions

Is Strflow free?
Strflow is free to download, with in-app purchases available.
Is PDF Indexer free?
PDF Indexer is free to download, with no in-app purchases.
Which has better reviews, Strflow or PDF Indexer?
PDF Indexer is rated higher. Strflow averages 5.0 out of 5 from 51 ratings, while PDF Indexer averages 5.0 from 2 ratings.
Do Strflow or PDF Indexer have ads?
PDF Indexer shows ads; Strflow does not.
Which is updated more often, Strflow or PDF Indexer?
Strflow ships an update fortnightly, and PDF Indexer every 2 days. Most recently, Strflow was updated on October 27, 2026 and PDF Indexer on October 31, 2026.

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