Inksignal vs Sealed
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Inksignal
This app enhances reading speed and focus using Rapid Serial Visual Presentation (RSVP). It displays words one at a time, reducing eye strain and improving comprehension for students and professionals. Supports various file formats and URL imports.
- Rapid Serial Visual Presentation (RSVP)
- Adjustable reading speed (100-1000+ WPM)
- Import TXT, Markdown, PDF, EPUB
- Read article text from URLs
- OCR for text from images
- YouTube transcript import
- Keyboard playback control
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Reading on a screen can feel slow and tiring. Your eyes jump line to line, your focus breaks, and long reading lists keep growing. Inksignal gives you another way to read. It uses RSVP (Rapid Serial Visual Presentation): words appear one at a time at a fixed focal point, so you can keep your place and move faster with less eye strain. Built for students, researchers, and knowledge workers. What you can do with Inksignal: - Read at your pace: 100 to 1000+ words per minute with live speed control - Import real content: TXT, Markdown, PDF, and EPUB - Paste any URL and read extracted article text - Pull text from screenshots and photos with OCR - Load YouTube transcripts from video links - Control playback from the keyboard (play, pause, jump, speed up/down) - Stay focused with a minimal interface that gets out of the way Use it to review class material, clear article backlogs, or process docs before meetings. If you read a lot and want to do it faster without burning out your eyes, Inksignal is built for you.
Sealed
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You think you know what will happen. Sealed makes you find out. Write a prediction, say how sure you are, and pick the date you will know. It seals. Until that date nobody can read it back — not even you. All you see is the label you gave it and a countdown. When the day comes, the seal breaks and you meet your own words: what you said, why you thought it, and how confident you were. Then you mark yourself right or wrong. That is where the interesting part starts. Sealed keeps the one number almost nobody keeps about themselves — how often the things you were 80% sure about actually happened. Say 80% and be right half the time and it will tell you so, level by level, and in plain words: "You say 83% on average and you are right 67% of the time. You run 16 points overconfident." Nothing leaves the phone. There is no account to make, no server holding your predictions, and nothing to subscribe to. It works on a plane. • Seal a prediction until a date you choose — minutes away or ten years away • Six confidence levels, each explained in odds you can feel • A vault of what is sealed, what is ready to open, and what you have judged • Your calibration, level by level, with a chart and a plain-English verdict • Reminders when something is ready to open, naming only the label • Export what you have opened as Markdown; sealed predictions are never in it • Sixteen example predictions to load, so the numbers mean something on day one • Works entirely offline. No account, no analytics, no subscription.
Screenshots
Verdict
The clearest difference is iOS requirement: Inksignal at 17.0 against Sealed's 26.0. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Inksignal | Sealed |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 17 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Dylan Shade | Jarle Hansen |
In-app purchases
Inksignal
No in-app purchases
Sealed
No in-app purchases









