Doosan Authenticator vs Picbook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Doosan Authenticator
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Doosan Authenticator 는 사용자 2차인증시 사용가능한 일회용 랜덤코드를 제공합니다.
Picbook
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Picbook turns any web page into a clean image & video gallery — browse once, then enjoy everything in a distraction-free reader mode. ■ Built for you if · You're tired of tapping images one by one in long web posts · You want to scroll web content like a photo gallery · You want to bookmark and keep what you love ■ Key Features · Reader Mode: automatically extracts images & videos from any web page · Two viewers: continuous vertical scroll or page-turn, with tap-zone navigation · Video playback: play in-article videos (mp4 and more) right in the viewer · Bookmarks & history: save works and revisit them anytime · Library storage: save images & videos on-device for offline viewing · Orientation lock, Korean/English switch, and fine-grained viewer settings · Fast grid: pre-loaded thumbnails for smooth browsing ■ How to use 1. Open any web page in the built-in browser 2. Tap Reader Mode to extract the image & video list 3. Enjoy in the viewer; bookmark or save your favorites ■ Picbook Pro Free up to 250 media views. Go Pro with a monthly subscription or Lifetime Access for unlimited viewing. Subscriptions auto-renew and can be managed or cancelled anytime in iOS Settings. ■ Notes · Content shown comes from the websites you visit; Picbook never stores content on servers · Copyright belongs to the original rights holders — for personal viewing only · Recommended for ages 17+ Terms & Privacy: https://x-ti.org/picbook Contact: manager@x-ti.org
Screenshots
Verdict
The clearest difference is in-app purchases: Doosan Authenticator at none against Picbook's 2. Doosan Authenticator also leads on iOS requirement (15.6 vs 17.0). On price, update cadence, 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
Both are free to download. Picbook sells 2 in-app purchases, starting at $1.99 per month. Doosan Authenticator asks for nothing beyond the download.
Doosan Authenticator ships an update fortnightly, Picbook every 11 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.
| Parameter | Doosan Authenticator | Picbook |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | KOREAEXPERT | XTI Co.,Ltd. |
In-app purchases
Doosan Authenticator
No in-app purchases
Picbook
- Picbook Pro Monthly$1.991 Month
- Picbook Pro$9.99
Questions
Is Doosan Authenticator free?
Is Picbook free?
Do Doosan Authenticator or Picbook have ads?
Which is updated more often, Doosan Authenticator or Picbook?
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