Sentence vs Vaulta PDF & Study AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sentence
This app introduces a unique approach to screen time management by requiring users to handwrite and scan a sentence to unlock blocked applications. It aims to create a deliberate pause between impulse and action, offering a robust system for managing digital distractions.
- Handwritten sentence scanning for app unlock
- Block specific apps or categories
- Customizable time-based schedules
- Multiple block group configurations
- Zen Mode to prevent app deletion
- Choice of sentence prompts (enquiry, affirmation, literature, roasting, custom)
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Most screen time apps are easy to dismiss. A tap. A passcode you set yourself. An exception you grant in three seconds. You already know this. You've tried them all. Sentence works differently. To unlock a blocked app, you write a sentence by hand — on paper — and scan it with your camera. Every time. No bypass. No exceptions. No "ignore for today." That moment of friction is the whole point. Most of the time, it's enough to make you put the phone down. HOW IT WORKS 1. Block any app or category — social media, streaming, games, news, anything. 2. Set your schedule — always on, a specific time window or a particular limit. 3. When you try to open a blocked app, you see a screen. Tap "Write Sentence." Sentence opens. 4. Write the sentence on paper. Hold it up. Scan it. The block lifts — for that session. 5. Tomorrow, you write it again. THE RITUAL Choose what you write each time you unlock: · Enquiry — why are you reaching for your phone right now? Answer honestly. · Affirmations — reinforce the person you're trying to become. · Literature — Seneca. Thoreau. Orwell. One line that reframes the moment. · Roasting — brutal honesty about what you're about to do with the next hour. · Custom — write your own sentence. Your commitment, your words. BLOCK ON YOUR TERMS · Block specific apps or entire categories · Time-based schedules — morning, night, all day, specific windows · Multiple block groups with different schedules and sentence types · Zen Mode — prevents deleting apps from your phone. Requires handwriting to disable. WHO SENTENCE IS FOR You've set screen time limits. You turned them off. You've tried grayscale mode. You adapted in a week. You've deleted the apps. You reinstalled them. You've tried willpower. It wasn't enough. Sentence isn't about willpower. It's about friction — a deliberate pause inserted between the impulse and the action. One sentence, written by hand, changes the calculus entirely. This is for people who are done with tricks that don't work. Access to Sentence features requires a paid subscription. Options include Monthly and Annual (with free trial). Manage or cancel anytime in your Apple ID settings. Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Vaulta PDF & Study AI
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Vaulta is a private workspace for documents, PDFs, notes and study material. SCAN AND ORGANISE Capture paper documents with your camera, import images from Photos, open files and keep everything together in a clear document library. POWERFUL PDF TOOLS Read PDFs, search their text, reorder pages, annotate with Apple Pencil, add signatures, insert photos and export the result. Combine documents or protect exported PDFs when you need to share them. SEARCH EVERYTHING Find words across document titles, notes, OCR text and PDF pages. Open a result and jump directly to the matching page or line. CONVERT AND EXPORT Open common document and archive formats, including ZIP files. Convert content inside Vaulta and export to PDF, text, Markdown, HTML, Word-compatible RTF and other useful formats. STUDY FROM YOUR OWN FILES Create summaries, outlines, key points, quizzes and flashcards from your documents. Ask questions grounded in the material you selected. PRIVATE OFFLINE AI Download an optional on-device language model and use AI tools without sending your documents to a remote AI service. Model downloads are verified before installation. MADE FOR IPHONE AND IPAD Use a focused iPhone workflow for quick capture and an expanded iPad workspace for reading, organising and studying. Your documents remain under your control. Some system features, such as speech recognition, may use services provided by the operating system according to your device settings.
Screenshots
Verdict
The clearest difference is in-app purchases: Vaulta PDF & Study AI at none against Sentence's 5. 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
Both are free to download. Sentence sells 5 in-app purchases, starting at $1.99 per 7 days. Vaulta PDF & Study AI asks for nothing beyond the download.
| Parameter | Sentence | Vaulta PDF & Study AI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 8 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 19 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Daksh Kaushik | THEODOR TIBERIUS STEFAN |
In-app purchases
Sentence
- Weekly Premium$1.997 Days
- Monthly Premium$4.991 Month
- Annual Premum7 Days trial$9.991 Year
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- Annual Premium7 Days trial$19.991 Year
- Lifetime Premium$34.99
Vaulta PDF & Study AI
No in-app purchases









