Comparison

NINAuth vs Quick Slip

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

Head to head
About

NINAuth

Securely verify, manage, and protect your digital identity using your National Identity Number. This app offers a user-friendly and seamless experience for on-the-go identity management.

Highlights
  • Digital identity verification
  • Identity management
  • Secure identity protection
  • National Identity Number integration
  • User-friendly interface
Features
Read full description

NINAuth is your official digital companion for verifying, managing, and protecting your identity with ease. Designed to work with your National Identity Number (NIN), NINAuth provides a seamless, secure, and user-friendly way to handle digital identification on the go.

About

Quick Slip

Features
Read full description

Quick Slip is the fastest way to create professional receipts and invoices for your business — right from your iPhone. An active Quick Slip Pro subscription is required to create, save, export, and manage receipts and invoices within the app. Whether you run a local shop, a service business, or work for yourself, Quick Slip helps you bill clients and keep clean records in just a few taps. Fill in a simple form, preview a beautifully designed document, and download it as a PDF or image to share anywhere. WHY QUICK SLIP • Create receipts and invoices in under a minute • Clean, professional templates that make your business look great • Download as PDF or high-resolution image • Save to Photos or share via email, Messages, WhatsApp and more • Every document is saved in your history for easy re-download — anytime MADE FOR YOUR BRAND • Add your logo, business details and accent color • Choose your currency • Add line items with quantity and price • Apply discounts (percentage or flat) and tax • Live totals as you type • Custom thank-you message and notes on every document STAY ORGANIZED • Searchable history of every receipt and invoice • Filter by receipts or invoices • Mark invoices paid or unpaid • Automatic document numbering (INV-0001, RCT-0001) PERFECT FOR Freelancers, sole traders, contractors, tradespeople, tutors, market sellers, salons, cafés, and any small business that needs quick, professional receipts and invoices on the go. Download Quick Slip and send your first receipt today. — Quick Slip Pro is an auto-renewable subscription that unlocks unlimited receipts and invoices. Payment is charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://quickslipapp.whipify.shop/privacy-policy.html

Screenshots

NINAuth3 screens
Quick Slip4 screens

Verdict

The call

The clearest difference is in-app purchases: NINAuth at none against Quick Slip's 2. NINAuth also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.0 vs 17). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Quick Slip sells 2 in-app purchases, starting at $4.99 per 7 days. NINAuth asks for nothing beyond the download.

UpkeepUpdate frequency

NINAuth ships an update every 3 weeks, Quick Slip every 2 months. Both last shipped on October 14, 2026.

Scorecard3 real differences · 7 level
NINAuth versus Quick Slip: the parameters behind the verdict, then further details
ParameterNINAuthQuick Slip
PriceFreeFree
Rating4.7 (4.5K ratings) — better—
Positive reviews56.5% of reviews—
Number of ratings4.5K — better—
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17
Further details — not scored
Size70 MB3 MB
Age rating17+4+
DeveloperNational Identity Management CommissionHezmart

In-app purchases

None

NINAuth

No in-app purchases

2 purchases

Quick Slip

Subscriptions2
  • Quick Slip Pro Weekly$4.997 Days
  • Premium Yearly$59.991 Year

Questions

Is NINAuth free?
NINAuth is free to download, with no in-app purchases.
Is Quick Slip free?
Quick Slip is free to download, with in-app purchases available.
Do NINAuth or Quick Slip have ads?
Neither NINAuth nor Quick Slip shows ads.
Which is updated more often, NINAuth or Quick Slip?
NINAuth ships an update every 3 weeks, and Quick Slip every 2 months. Most recently, NINAuth was updated on October 14, 2026 and Quick Slip on October 14, 2026.

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