Comparison

Receira for Papra vs OBD2 Ninja

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

Head to head
About

Receira for Papra

Manage your personal documents privately on a server you control. Capture, organize, search, and sign receipts, bills, and contracts from your iPhone, iPad, and Apple Watch. Setup is quick and easy, with on-device processing for privacy.

Highlights
  • Self-hosted document management
  • Scan and capture documents
  • Full-text search
  • Sign and annotate PDFs
  • Document reminders
  • Apple Watch companion app
  • Secure sign-in options
Features
Read full description

Receira is a fast, private, native app for your self hosted Papra document server. Capture, organize, search, sign, and read your entire archive, from receipts and bills to contracts and IDs, right from your iPhone, iPad, and Apple Watch. Everything stays on a server you control. Receira is completely free. There is no subscription, no in app purchase, and no account to buy. You connect the app to a Papra server you run or have access to, and your documents are instantly at your fingertips. Think of it like a mail app, but for your personal paperwork. SET UP IN UNDER A MINUTE A simple, guided setup walks you through connecting to your server and signing in. Point Receira at your Papra address, choose how you sign in, and you are ready to go. SCAN AND CAPTURE Scan paper with your camera and Receira reads the merchant, date, and total on device, then names and files it for you. An adaptive review screen recognizes whether you are capturing a receipt, a card, or a document and shows the right fields. Import from Files or Photos, upload several at once, or scan a multi page stack and split it into separate documents. FIND ANYTHING Full text search looks inside your documents, not just their titles. Organize with color coded tags and one tap suggestions, and let the Smart Inbox surface anything still untagged. READ THE TEXT ON ANY SCAN With Live Text, tap a phone number, address, link, or date on a scanned page to call, open, or save it in a moment, or simply select and copy the text you need. SIGN AND MARK UP Sign and annotate documents right on your device. Open a PDF, add your signature, notes, or highlights, and Receira saves the result as a new copy so your original always stays untouched. Your signature stays exactly where you place it and syncs across your devices. NEVER MISS A DEADLINE Set a reminder on any document, whether it is a bill due, a warranty window, or a renewal, and Receira notifies you before it matters. Reminders sync across your devices. YOUR SERVER AT A GLANCE A clear Server and Storage view shows your connection status, latency, last sync, and how much you are storing, all in one place. ON YOUR WRIST A companion Apple Watch app puts your recent documents, search, and offline favorites right on your wrist. SIGN IN YOUR WAY Connect with email and password, add two factor authentication, or use single sign on (SSO or OAuth) if your server runs Authentik, Keycloak, Google, and more. SHARE WITH FAMILY AND TEAMMATES Create organizations and invite people by email as Members or Admins, manage roles, and switch between organizations anytime. When you share a file into Receira, you can choose exactly which organization it goes to. PRIVATE BY DESIGN Your documents live on your server, never ours. Receira talks only to the server you choose, with no tracking and no third party accounts. Lock the app behind Face ID or Touch ID, keep documents available offline, and reach recent files from Home Screen widgets and Control Center. Receira is an independent client and requires a Papra server. It is not affiliated with or endorsed by Papra.

About

OBD2 Ninja

Features
Read full description

Check engine light on? Find out whether it's serious before you book a shop visit or drive another mile. OBD2 Ninja reads your car's codes and rates every one Fix Now, Fix Soon, or Monitor for your year, make and model. Then it tells you what to check first. $0.99 once. No subscription, no account, no ads. OBD2 Ninja carries Apple's "Data Not Collected" privacy label, and everything works offline. In a parking garage, on the shoulder, with no signal at all. IS IT SERIOUS? Every code gets an urgency rating, not just a definition: • Fix Now: stop driving or get it looked at today • Fix Soon: safe to drive, book it this week • Monitor: keep an eye on it Plus what usually causes it on your specific vehicle, and the cheapest thing to check first. READY FOR EMISSIONS? See all eight readiness monitors at a glance before you go to the test station. Know whether you'll pass, or how many more miles of driving you need, instead of paying to find out. READ AND CLEAR • Stored, pending and permanent codes • Freeze frame data captured when the fault tripped • Clear codes and reset the light after you fix it • Confirm the fix actually held LIVE DATA Watch coolant temp, fuel trims, O2 sensors, RPM, load and timing in real time. Pin down an intermittent fault the parts-store scanner can't see. WHAT YOU NEED Any ELM327 Bluetooth LE or Wi-Fi adapter, and a car built 1996 or later (2001+ petrol / 2004+ diesel in the EU). Tested and confirmed with: Carista, Vgate iCar Pro BLE, OBDLink MX+. Full list and setup guide at ninja-obd2.com. WHAT IT DOESN'T DO OBD2 Ninja reads the engine and emissions systems that every car is required to expose. That is what turns your check engine light on. It does not read ABS, airbag, transmission or body-module codes, and it can't do dealer-level coding. Those need manufacturer-specific tools. We'd rather tell you that now than after you've paid. PRIVACY No account. No sign-up. No analytics. Nothing leaves your phone. Apple's own privacy label on this page reads "Data Not Collected." Check it. SUPPORT A real person answers every email. support@ninja-obd2.com

Screenshots

Receira for Papra4 screens
OBD2 Ninja4 screens

Verdict

The call

The clearest difference is price: Receira for Papra at Free against OBD2 Ninja's $0.99. Receira for Papra also leads on device support (3 vs 1). OBD2 Ninja's advantage is update cadence (every 3 days vs every 2 weeks) and iOS requirement (18.0 vs 26.0). On ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Receira for Papra is free to download; OBD2 Ninja costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Receira for Papra ships an update every 2 weeks, OBD2 Ninja every 3 days. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Receira for Papra versus OBD2 Ninja: the parameters behind the verdict, then further details
ParameterReceira for PapraOBD2 Ninja
PriceFree — better$0.99
Rating4.5 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.018.0 — better
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperSaud LootahCory Green

In-app purchases

None

Receira for Papra

No in-app purchases

None

OBD2 Ninja

No in-app purchases

Questions

Is Receira for Papra free?
Receira for Papra is free to download, with no in-app purchases.
Is OBD2 Ninja free?
OBD2 Ninja costs $0.99, with no in-app purchases.
Do Receira for Papra or OBD2 Ninja have ads?
Neither Receira for Papra nor OBD2 Ninja shows ads.
Which is updated more often, Receira for Papra or OBD2 Ninja?
Receira for Papra ships an update every 2 weeks, and OBD2 Ninja every 3 days. Most recently, Receira for Papra was updated on October 5, 2026 and OBD2 Ninja on October 9, 2026.

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