Comparison

Authenticator vs Ruler

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

Head to head
About

Authenticator

Securely manage your two-factor authentication tokens and passwords in one place. This app offers offline code generation and a private in-app browser. Free users can manage existing codes and passwords, while premium subscribers gain unlimited creation and secure browsing.

Highlights
  • Organize 2FA tokens and passwords
  • Offline code generation
  • Built-in secure browser
  • Manage existing codes and passwords (free)
  • Unlimited code/password creation (premium)
  • Face ID access
Read full description

Auth Master – Secure 2FA & Password Management Effortlessly organize and protect your two‑factor authentication tokens and passwords all in one place. Auth Master keeps your sensitive data safe on your iPhone — no network needed for codes, plus a built‑in secure browser for private browsing on the go. Free Features: – View, edit, rename, and delete your existing 2FA codes – View, edit, rename, and delete your stored passwords – Access full Settings suite: 1. Rate the app 2. Share Auth Master with friends 3. Contact us via email 4. View Privacy Policy & Terms of Use 5. Restore purchases 6. Set or change your app passcode 7. Enable Face ID for instant access Premium Features (subscription required): – Add and create unlimited 2FA codes (via QR‑scan or manual Secret Key entry) – Save and generate unlimited passwords – Browse securely with our in‑app encrypted browser (no history saved) Subscription Plans: – Weekly: $4.99 – Monthly: $17.99 – Annual: $49.99 Adding and creating 2FA codes, adding passwords, and secure browsing require an active subscription. Viewing, editing, and deleting existing codes and passwords and all Settings features are always free. Payment is charged to your iTunes account at confirmation. Subscriptions auto‑renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your iTunes Account Settings. Privacy Policy: https://telegra.ph/Privacy-Policy-for-2FA-Authenticator-07-22 Terms of Use: https://telegra.ph/2FA-Authenticator-Terms-of-Use-07-22

About

Ruler

Transform your phone into a precise measuring tool for any task. Accurately measure small objects on your screen or larger items using augmented reality. Save your measurements and switch between units effortlessly.

Highlights
  • Dual measurement modes (screen/AR)
  • Supports inches, centimeters, millimeters
  • Fast and accurate results
  • Measurement history saving
  • Intuitive user interface
Features
Read full description

Measure Anything, Anywhere—Instantly! Ditch the tape measure! Turn your phone into a powerful precision tool that fits right in your pocket. Whether you're hanging artwork, shopping for furniture, or tackling DIY projects, get accurate measurements in seconds. Why You'll Love It: 1. Dual Measurement Modes – Use your screen for small objects or AR camera for larger items 2. Universal Units – Seamlessly switch between inches, centimeters, and millimeters 3. Lightning-Fast Results – No setup, no hassle—just point and measure 4. Measurement History – Never lose track! Save and revisit all your measurements instantly 5. Crystal-Clear Design – Beautiful interface that anyone can master in seconds Perfect For: -Home improvement and DIY projects - Furniture shopping and room planning - Crafts, sewing, and creative work - Professional contractors and designers - Everyday quick measurements Get Unlimited Access: - Weekly Plan: $4.99/week with a 3-day FREE trial - Annual Plan: Just $19.99/year (Best Value!) Download now and never be caught without a ruler again! Payment charged to iTunes Account at purchase confirmation. Subscription auto-renews unless cancelled 24 hours before period ends. Manage subscriptions in iTunes Account settings. Privacy Policy: https://docs.google.com/document/d/1rI3fnxwWA-0x2lp5cD4D_XVscsq-xmo4NaXoUM_9qlQ/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/15w3N4DqRNjGFrUpbeaxzNEOhz9Owq0NLnhlG_Ej71Uo/edit?usp=sharing

Screenshots

Authenticator4 screens
Ruler4 screens

Verdict

The call

The clearest difference is ads: Ruler at none against Authenticator's shown. Authenticator's advantage is rating (4.5 vs 4.3) and iOS requirement (14.0 vs 16.0). On price, ratings volume, update cadence 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

Both are free to download. Authenticator sells 3 in-app purchases, starting at $4.99 per 7 days and Ruler sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Authenticator holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 25 and 36 respectively.

UpkeepUpdate frequency

Authenticator ships an update weekly, Ruler every 6 days. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
Authenticator versus Ruler: the parameters behind the verdict, then further details
ParameterAuthenticatorRuler
PriceFreeFree
Rating4.5 (25 ratings) — better4.3 (36 ratings)
Positive reviews—0.0% of reviews
Number of ratings2536 — better
Update frequencyWeeklyEvery 6 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better16.0
Further details — not scored
Size73 MB108 MB
Age rating4+4+
DeveloperTimon ScherzingerURVO PIIRISILD

Customer experience

Authenticator

All ratings25 ratings
Positive88.0%
Neutral0.0%
Negative12.0%

Ruler

All ratings36 ratings
Positive83.3%
Neutral2.8%
Negative13.9%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

3 purchases

Authenticator

Subscriptions3
  • Weekly3 Days trial$4.997 Days
  • Monthly$17.991 Month
  • Yearly$49.991 Year
2 purchases

Ruler

Subscriptions2
  • Ruler – Measure Tool3 Days trial$4.997 Days
  • Ruler – Measure Tool$19.991 Year

Questions

Is Authenticator free?
Authenticator is free to download, with in-app purchases available.
Is Ruler free?
Ruler is free to download, with in-app purchases available.
Which has better reviews, Authenticator or Ruler?
Authenticator is rated higher. Authenticator averages 4.5 out of 5 from 25 ratings, while Ruler averages 4.3 from 36 ratings.
Do Authenticator or Ruler have ads?
Authenticator shows ads; Ruler does not.
Which is updated more often, Authenticator or Ruler?
Authenticator ships an update weekly, and Ruler every 6 days. Most recently, Authenticator was updated on October 8, 2026 and Ruler on September 30, 2026.

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