DocLens vs Folio
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
DocLens
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DocLens is a fully offline frame-select OCR tool: draw a box, extract exactly the text you circled, and translate it on your device. The liability clause in a contract, the date on a court ruling, one verbatim line from an interview: you choose the block, it reads only that. Headers, footers, ads and noise are never touched. Key features: 1. Frame-select OCR: shoot or pick a photo, drag a box, and only the text inside is recognized. Low-confidence lines are dashed-underlined for line-by-line proofreading before translation. 2. Accurate recognition: selectable recognition languages with automatic per-line detection for mixed Chinese and English; handwriting and rotated text supported; Enhance and Retry rescues poor scans. 3. On-device translation: results are translated paragraph by paragraph for fluent output. Chinese, English, Japanese, Korean, French, German and Spanish are supported, and language packs can be downloaded in advance. 4. QR and barcode scanning: frame a code to open URLs in an in-app browser, dial numbers, compose emails, open locations, or copy Wi-Fi passwords and contact fields. 5. Fully offline: recognition, translation and barcode scanning all run on your device. No account, no analytics, no cloud upload, and no network access from shutter to text. 6. Minimal permissions: DocLens never asks for full photo library access, only permission to save your exports. Data stays in the local sandbox and database. 7. Torch and Enhance Retry: turn on the light for close-up documents, and re-run recognition with boosted contrast when a scan comes out poorly. Membership: New users get a free 7-day trial, extendable once by another 7 days from the membership page. After the trial, you can still scan free once per day. VIP is a one-time purchase: no subscription, no ads, no tracking. Great for contract review, hearing and meeting notes, interview transcription, research excerpts, receipt and form data extraction, and translating foreign signs. Your files go nowhere. That is what makes DocLens different: it does not make decisions for you. It hands judgment back to you, and keeps privacy structural with on-device computing.
Folio
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Folio is a fast, private home for your notes ā with a twist: pin a note to your Lock Screen as a Live Activity so it stays in sight until you're done with it. CAPTURE INSTANTLY ⢠Quick-add bar for jotting a thought in seconds ⢠Full Markdown editing with live formatting ⢠Checklists, headings, bold, and more ⢠Attach photos and files to any note ⢠Unlimited notes, always free FOLIO PRO ⢠Folders to keep projects and topics organized ⢠iCloud sync keeps every note current across your devices ⢠Enhance with AI rewrites your notes for clarity ā entirely on-device ⢠Pin as many notes to your Lock Screen as you like ⢠One-time purchase. No subscription, ever. PIN, REMIND & SHARE ⢠Pin one note to your Lock Screen so it stays in view ⢠Reminders on any note, scheduled on your device ⢠Share individual notes with people you choose ā only invitees can see them PRIVATE BY DESIGN ⢠No accounts, no ads ā we never see your notes ⢠Enhance with AI runs entirely on your device using Apple Intelligence ā nothing about your notes is ever sent anywhere ⢠Your notes stay on your device except through your own iCloud (Folio Pro) or when you choose to share one ⢠Folio sends anonymous usage analytics ā like app opens and which features you use ā to help us improve it. It's on by default and never includes your notes, photos, or anything you write; turn it off anytime in Settings, which also deletes what was already collected Folio is for people who want a notes app that's quick, beautiful, and quietly respectful of their data.
Screenshots
Verdict
The clearest difference is update cadence: Folio at every 2 days against DocLens's every 10 days. DocLens's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DocLens ships an update every 10 days, Folio every 2 days. The most recent releases landed on September 18, 2026 and September 25, 2026 respectively.
| Parameter | DocLens | Folio |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Every 2 days ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 ā better | 26.0 |
| Further details ā not scored | ||
| Size | 45 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | ę¶ å | Tom Weiss |
In-app purchases
DocLens
No in-app purchases
Folio
No in-app purchases








