Comparison

Authenticator App! vs Gallery Slim

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

Head to head
About

Authenticator App!

This app enhances online security by generating one-time passwords for two-factor and multi-factor authentication. It offers quick QR code scanning for easy account setup and supports offline code generation, ensuring access even without an internet connection. Protect your personal, work, and financial accounts with robust security features.

Highlights
  • Generate secure OTP & TOTP codes
  • Quick QR code scanning
  • Support 2FA & MFA security
  • Face ID & Passcode protection
  • Offline code generation
  • Manage multiple accounts
  • Backup & Restore functionality
Features
Read full description

Secure Your Accounts with Authenticator App! Authenticator App helps protect your online accounts with secure two-factor authentication (2FA) and multi-factor authentication (MFA). Generate one-time passwords (OTP) instantly and add an extra layer of security to your personal, work, and financial accounts. Features • Generate Secure OTP & TOTP Codes Create time-based one-time passwords (OTP/TOTP) for your online accounts with reliable and secure code generation. • Quick QR Code Scanning Add new accounts in seconds by scanning QR codes from supported websites and services. • Support 2FA & MFA Security Protect your accounts with Two-Factor Authentication (2FA) and Multi-Factor Authentication (MFA). • Face ID & Passcode Protection Keep your authentication codes secure with Face ID and device-level security protection. • Offline Code Generation Access verification codes anytime, even without an internet connection. • Manage Multiple Accounts Store and organize authentication codes for work, personal, and business accounts in one secure app. • Real-Time Verification Codes View active codes with automatic refresh and expiration countdown timers. • Backup & Restore Easily transfer and restore your authenticator accounts when changing devices. • Simple & Easy to Use Clean interface designed for quick setup and effortless account management. Why Use Authenticator App? Passwords alone are no longer enough. Authenticator App helps protect your accounts against unauthorized access by generating secure verification codes directly on your device. Whether you're securing email, cloud storage, social media, cryptocurrency exchanges, business tools, or work accounts, Authenticator App provides a reliable authentication solution. Perfect For • Personal accounts • Business accounts • Work logins • Cloud services • Cryptocurrency platforms • Social media accounts • Email security Subscription Details Payment will be charged to your Apple ID account upon confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current billing period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage and cancel subscriptions anytime through your App Store account settings. Any unused portion of a free trial period, if offered, will be forfeited when purchasing a subscription.

About

Gallery Slim

Effortlessly declutter your photo library by identifying and removing duplicate, similar, and large media files. Review and confirm all deletions to maintain full control over your storage.

Highlights
  • Smart Clean for duplicate and similar photos
  • Smart Scan for storage usage analysis
  • Swipe Cleanup for quick deletion
  • Large Video Tools with compression
  • Convert Live Photos to Still
  • Final Review before deletion
Features
Read full description

Clear photo clutter and reclaim iPhone storage—without giving up control. Gallery Slim finds duplicate photos, similar shots, screenshots, screen recordings, and large videos. Nothing is deleted until you review and confirm. CORE TOOLS 01 — Smart Clean Find duplicate and similar photos, screenshots, and screen recordings. Keep the best and remove the extras. 02 — Smart Scan See what is using your photo library storage and estimate how much space you can reclaim. 03 — Swipe Cleanup Swipe right to keep and left to remove. 04 — Large Video Tools Find storage-heavy videos and compress selected ones. See the original and estimated compressed size first. 05 — Live Photo to Still Keep the picture without the extra motion. 06 — Final Review Check selected items, change your choices, and confirm when ready. Gallery Slim does not collect your data. Download Gallery Slim and make room for more. SUBSCRIPTION INFORMATION We offer a 3-day free trial. After the trial, the subscription renews automatically at US$9.99 per week unless canceled at least 24 hours before the trial or current billing period ends. Your Apple Account is charged when the trial ends and at each renewal. Manage or cancel in your Apple Account settings. Privacy Policy: https://knappgl98.com/legal-privacy.html Terms of Service: https://knappgl98.com/terms-of-service.html

Screenshots

Authenticator App!4 screens
Gallery Slim4 screens

Verdict

The call

The clearest difference is in-app purchases: Gallery Slim at none against Authenticator App!'s 9. Gallery Slim also leads on rating (4.5 vs 4.2). Authenticator App!'s advantage is update cadence (every 4 days vs every 2 weeks). On price, ratings volume, ads and monetization model 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 App! sells 9 in-app purchases, starting at $4.99 per 7 days. Gallery Slim asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Gallery Slim holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 11 and 11 respectively.

UpkeepUpdate frequency

Authenticator App! ships an update every 4 days, Gallery Slim every 2 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
Authenticator App! versus Gallery Slim: the parameters behind the verdict, then further details
ParameterAuthenticator App!Gallery Slim
PriceFreeFree
Rating4.2 (11 ratings)4.5 (11 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings1111
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS16.016.0
Further details — not scored
Size78 MB45 MB
Age rating17+4+
DeveloperVarMeta泽滨 朱

In-app purchases

9 purchases

Authenticator App!

Subscriptions8
  • Weekly Pro Access$4.997 Days
  • Weekly Pro Access3 Days trial$6.997 Days
  • Week Premium3 Days trial$9.997 Days
Show 5 more
  • Week Pro$9.997 Days
  • Monthly Pro Access$19.991 Month
  • Yearly Premium3 Days trial$34.991 Year
  • Yearly Pro$39.991 Year
  • Yearly Premium Access3 Days trial$39.991 Year
One-time1
  • Authenticator – Lifetime Access$59.99
None

Gallery Slim

No in-app purchases

Questions

Is Authenticator App! free?
Authenticator App! is free to download, with in-app purchases available.
Is Gallery Slim free?
Gallery Slim is free to download, with no in-app purchases.
Which has better reviews, Authenticator App! or Gallery Slim?
Gallery Slim is rated higher. Authenticator App! averages 4.2 out of 5 from 11 ratings, while Gallery Slim averages 4.5 from 11 ratings.
Do Authenticator App! or Gallery Slim have ads?
Both Authenticator App! and Gallery Slim show ads.
Which is updated more often, Authenticator App! or Gallery Slim?
Authenticator App! ships an update every 4 days, and Gallery Slim every 2 weeks. Most recently, Authenticator App! was updated on October 31, 2026 and Gallery Slim on October 29, 2026.

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