Sign documents Fast & Secure vs KarHub
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Sign documents Fast & Secure
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Sign, store, and share important documents in seconds ā securely and entirely on your device. Create & Sign Documents Instantly Import any document using your camera, photo gallery, or file manager. Draw your signature directly on the screen, adjust its style, size, and position, and apply it exactly where needed. Customizable Signatures Fine-tune your signature with adjustable pen thickness, color, and transparency. Stay Organized All signed documents are stored locally in a clean, private archive. Export them anytime and share them via email, messengers, cloud storage, or any other service on your device. Fast, Private & Secure No data leaves your device unless you choose to share it. Your documents stay yours ā always. Perfect for: - Contracts and agreements - Invoices and receipts - Permission slips - Any paperwork that needs your signature on the go Get it done. Sign fast. Stay secure. Privacy Policy: https://docs.google.com/document/d/1mT6baoDVgsjdyvTjFOUIB00yvbuzNuOxG3lcL12mvqg/edit?usp=sharing Term of Use: https://docs.google.com/document/d/1MFu4zwXSnDzml_WoP_znJ4OGtUQisZIc7HeGdTmrV60/edit?usp=sharing
KarHub
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Most car apps do one thing. KarHub is the one that remembers everything ā and actually does something with it. Add your VIN once. KarHub decodes your exact year, make, model, trim and engine, and every answer it gives from then on is about your car specifically. WHAT YOU GET FREE ⢠Service history that stays put. Log oil changes, brakes, tires, anything. Date, mileage, cost and notes, in one timeline instead of a glovebox full of receipts. ⢠Maintenance rings. Every interval is a ring that drains as it elapses, so you can see where you stand without doing arithmetic. Tap one to log it. Add your own for anything KarHub doesn't cover. ⢠Reminders that do the maths. Oil change due dates calculated from how you actually drive, not a guess. Registration renewals and monthly odometer prompts too. ⢠Open recall alerts, checked against NHTSA's live database for your vehicle. Recalls are free to fix and easy to miss entirely. ⢠Nearby repair shops with addresses, distance and directions. ⢠A tire life guide, the penny test, step by step, and what each result actually means. KARHUB PLUS ⢠Otto, your AI mechanic. Ask anything about your car. Otto can see your service history and mileage, searches the web for real specifications rather than guessing, and shows you where each answer came from. Send a photo of a warning light or a leak and ask about that. ⢠Fluid specs, filled in for you. Otto looks up the oil weight, capacity and fuel grade for your exact vehicle and saves them, clearly marked so you can check them against your owner's manual. ⢠Quotes, collected for you. Pick a job and how many shops to ask. KarHub emails them on your behalf, reads the replies, pulls out the prices and lays them side by side. You never write an email. ⢠Booking and reminders. When a shop offers a time, book it in a tap. It goes on your calendar, you get a reminder the day before, and cancelling sends the shop a note. ⢠Your whole garage. Track as many vehicles as you own. SUBSCRIPTION KarHub Plus is $7.99/month or $59.99/year. Tracking your car is free, permanently, the subscription covers the features that cost us money to run. Privacy Policy: https://karhub.app/privacy Terms of Use: https://karhub.app/terms
Screenshots
Verdict
The clearest difference is iOS requirement: Sign documents Fast & Secure at 15.6 against KarHub's 18.0. On price, update cadence, ads and in-app purchases 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. Sign documents Fast & Secure sells 2 in-app purchases, starting at $5.99 per 7 days and KarHub sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.
| Parameter | Sign documents Fast & Secure | KarHub |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod ā better | iPhone |
| Requires iOS | 15.6 ā better | 18.0 |
| Further details ā not scored | ||
| Size | 28 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | UPPER UNIT Korlatolt Felelossegu Tarsasag | Challa Hadley |
In-app purchases
Sign documents Fast & Secure
- Unlock full access$5.997 Days
- Fast & Secure Sign Pro3 Days trial$5.997 Days
KarHub
- KarHub Plus Monthly$7.991 Month
- KarHub Plus Annual$59.991 Year
Questions
Is Sign documents Fast & Secure free?
Is KarHub free?
Do Sign documents Fast & Secure or KarHub have ads?
Which is updated more often, Sign documents Fast & Secure or KarHub?
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