Elephant Folio vs Thread to Self
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elephant Folio
This app automatically organizes your PDF documents using on-device AI. It intelligently files, tags, and categorizes PDFs from various sources, making them easily searchable. Your documents remain private and accessible across all your Apple devices.
- On-device AI for automatic filing
- Intelligent tagging and categorization
- Cross-device library sync via iCloud
- Capture PDFs from Safari, Mail, and camera
- Full-text search including document content
- Offline-first functionality
- Siri Shortcuts integration
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Elephant Folio is a PDF organizer built for people who read papers. Bring a paper in from Safari, Mail, or anywhere on your device, and Elephant Folio files it for you; based on what's actually inside it, not just the filename. The folders get made. The tags get applied. You keep reading. Rules that organize for you Set a rule once and every matching document gets tagged automatically. Match on filename, file contents, author, and more. You can combine conditions with a simple any/all toggle. Rules run the moment a file arrives, and you can re-run them on any file in your whole library anytime. No more tagging one file at a time. Smart organizing, on by default: When Apple Intelligence is available on one of your devices, Elephant Folio can also read and tag documents on its own. Your documents stay yours: Everything stays on your devices. Nothing is uploaded anywhere. Capture from anywhere: The Share extension works across Safari, Mail, Files, and anything else that can hand off a PDF. Scan a physical page and it's filed before you put your phone down and your rules apply instantly. Search that actually reaches: Not just filenames. Not just folders. Text, tags, and document content, so the thing you're looking for turns up even when you don't remember what you called it. One library across all your devices: iCloud keeps Mac, iPad, and iPhone in sync — down to the exact page you left off on. Files live in your Documents folder and open in any app that reads PDFs. Siri Shortcuts let Elephant Folio fit inside whatever system you've already built for yourself. Import from anywhere (even from the browser on a Windows): As long as you can access your iCloud folder, you can drag your PDF documents to Elephant Folio and they will be imported next time you open the app. No internet? No problem: Elephant Folio is a privacy-centric, offline-first app. Capture, read, tag, and search anywhere. The only network requests this app makes are ones to Apple's servers for iCloud syncing or those to fetch metadata from CrossRef/ArXiv/Pubmed. The elephant never forgets. Now neither do you. By using this app you agree to Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Thread to Self
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Thread to Self is a private message thread with yourself. Capture a thought, observation, idea, or memory, then move on with your day. Everything lives in one continuous stream, arranged from oldest to newest. When you want to revisit something, jump directly to a month and year. Thread to Self is intentionally simple: • No AI • No ads • No account, nothing to sign up for • No social features • No folders, tags, or filters • Text only, no photos or attachments • No editing after you send • Messages can be deleted, but never changed Your messages are stored on your iPhone and synchronized through your private iCloud account. Export your thread as text whenever you choose. Optional weekly or monthly reminders are quiet and simple. No streaks, badges, or guilt. Try Thread to Self free for 30 days. After the trial, unlock writing permanently with a one-time $4.99 purchase. No subscription. Your messages are always yours to read and export, whether or not you buy.
Screenshots
Verdict
The clearest difference is device support: Elephant Folio at 3 against Thread to Self's 1. Thread to Self's advantage is iOS requirement (17.0 vs 26.0). On price, ads and in-app purchases 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
Both are free to download. Elephant Folio sells 3 in-app purchases, starting at $4.00 per month and Thread to Self sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Elephant Folio | Thread to Self |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 95 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Beroea Tech L.L.C | You-R-Here LLC |
In-app purchases
Elephant Folio
- Monthly Subscription$4.001 Month
- Yearly Subscription$25.001 Year
- Lifetime License$55.00
Thread to Self
- Thread to Self Unlock$4.99









