Comparison

Motorkeep vs Sign PDF

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Motorkeep

Features
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MotorKeep helps you stay in control of all your vehicles. Easily track your MOT, insurance, maintenance and more β€” all in one place. Keep a detailed history of each vehicle: expenses, mileage, services, repairs… and keep everything organized and up to date. Set reminders so you never miss an important task: an upcoming MOT, insurance renewal or a scheduled check-up. You choose what to track and when. With MotorKeep, staying on top of your vehicle management has never been easier.

About

Sign PDF

Features
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Sign a PDF in seconds without creating an account and without uploading the file to a server. Everything runs on your iPhone or iPad and the original document stays unchanged. NO LIMITS, NO WATERMARKS Export and share the signed document as many times as you need. There is no subscription, no in-app purchase, no advertising and no daily document limit. SIGN AND FILL - Create your signature by drawing it, typing it or using a photo - Save several signatures and initials and reuse them any time - Add text, dates, checkboxes, images and stamps - Adjust the size, rotation and colour of each element, with undo and redo - Fill PDF form fields by tapping them directly - On-device text recognition suggests where the signature and date go, and you confirm SCANNER AND TEXT RECOGNITION - Scan multi-page documents with edge detection and perspective correction - Apply colour, greyscale or black and white filters - Review, reorder and remove pages before saving - Turn photos from your gallery into a PDF - Produce searchable text in English and Spanish with on-device OCR PDF TOOLS - Merge and split documents - Organise pages: reorder, rotate, duplicate, delete and extract - Compress a file - Add page numbers and watermarks - Protect a PDF with a password - Open protected documents by entering their password YOUR LIBRARY, KEPT PRIVATE - Search by name and browse real page thumbnails - Mark favourites, rename, duplicate and delete - Autosave and draft recovery if you close the app - Open files straight from other applications PRIVACY Documents, scans and signatures are stored in the app's private storage, protected with system encryption and excluded from automatic backup. There is no user account, no document server, no advertising and no product analytics. PDF passwords are never stored. WHAT IT DOES AND WHAT IT DOES NOT The app places a visual signature on the PDF: the equivalent of printing, signing and scanning, without the paper. It does not issue certificate-based digital signatures or qualified timestamps, and it does not send documents to other people for them to sign. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.freeprivacypolicy.com/live/6709a492-0082-4d37-b246-397c3cdc06a5

Screenshots

Motorkeep3 screens
Sign PDF4 screens

Verdict

The call

The clearest difference is in-app purchases: Sign PDF at none against Motorkeep's 5. Sign PDF also leads on update cadence (every 5 weeks vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Motorkeep sells 5 one-off in-app purchases. Sign PDF asks for nothing beyond the download.

UpkeepUpdate frequency

Motorkeep ships an update every 9 months, Sign PDF every 5 weeks. The most recent releases landed on November 12, 2026 and November 6, 2026 respectively.

Scorecard2 real differences Β· 4 level
Motorkeep versus Sign PDF: the parameters behind the verdict, then further details
ParameterMotorkeepSign PDF
PriceFreeFree
Update frequencyEvery 9 monthsEvery 5 weeks β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 β€” better17.0
Further details β€” not scored
Size26 MB13 MB
Age rating4+4+
DeveloperAlvaro LopezAntonio Gonzalez de la aleja german

In-app purchases

5 purchases

Motorkeep

One-time5
  • Create up to 2 vehicles$2.99
  • Create up to 3 vehicles$3.99
  • Create up to 5 vehicles$5.99
Show 2 more
  • Create up to 10 vehicles$12.99
  • Create unlimited vehicles$22.99
None

Sign PDF

No in-app purchases

Questions

Is Motorkeep free?
Motorkeep is free to download, with in-app purchases available.
Is Sign PDF free?
Sign PDF is free to download, with no in-app purchases.
Do Motorkeep or Sign PDF have ads?
Neither Motorkeep nor Sign PDF shows ads.
Which is updated more often, Motorkeep or Sign PDF?
Motorkeep ships an update every 9 months, and Sign PDF every 5 weeks. Most recently, Motorkeep was updated on November 12, 2026 and Sign PDF on November 6, 2026.

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