Comparison

Subai vs Pico PDF Viewer

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

Head to head
About

Subai

Break language barriers with an AI-powered tool that translates videos and audio into over 100 languages. Upload files, record your voice, or paste video links for quick, accurate translations. Ideal for creators and global communicators.

Highlights
  • AI-powered video and audio translation
  • Supports over 100 languages
  • Upload video/audio files
  • Voice recording for translation
  • Website video link translation
  • Intuitive user interface
Features
Read full description

Break language barriers with Subai! Powered by advanced AI, Subai translates videos and audio into 100+ languages. Perfect for creators, learners, and global communicators. Top Features: - AI-Powered Video & Audio Translator - Quickly convert speech from videos or audio files into accurate translations. SUPPORT FOR 100+ LANGUAGES - Easily translate into over 100 languages for effortless global communication. MULTIPLE INPUT METHODS - Upload videos or audio files. - Record your voice for instant translations. WEBSITE INTEGRATION - Translate videos from Video sharing platforms – just paste the link! INTUITIVE DESIGN - Simple, user-friendly interface for fast and seamless translations. WHY CHOOSE SUBAI? - Ideal for content creators, students, and professionals. - Lightning-fast and accurate translations with AI. - Enhance your global reach effortlessly. - Download Subai now and make the world speak your language!

About

Pico PDF Viewer

Read full description

Pico PDF Viewer is a very lightweight, local document viewer built around fast switching: authorize one folder, and jump between the PDFs and Markdown files inside it without picking a new file every time. ■ PDF reading ・Continuous scroll or single-page mode, pinch to zoom and pan for detail ・Full-text search (on supported devices) — jump straight to a hit, highlighted ・Bottom thumbnail strip to jump around long documents quickly ・Immersive controls — tap anywhere to show or hide them ■ Markdown viewing and editing ・Fully styled preview: headings, lists, quotes, code blocks, tables ・Edit in place and save — "Save" overwrites the original file directly, no switching to another app ・Formatting toolbar (headings, bold, italic, lists, code, tables, links) and a line-number gutter ■ Quick switching A side drawer lists every PDF/MD in the current folder — tap one to switch, no need to go back to the list first. ■ Three themes, three languages Dark, light, and warm themes switch instantly, or follow your system's dark mode setting; the interface is available in 繁體中文, English, and 日本語 at any time. ■ Fully offline Every file is read, rendered, and edited entirely on your device. There is no server and no account, and nothing is ever uploaded. The only network activity is the bottom Google AdMob banner (no interstitial ads) — see the privacy policy for details. You can also open a single file directly from another app's "Open with" or share menu (email, a download notification, …) without authorizing a whole folder.

Screenshots

Subai4 screens
Pico PDF Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: Pico PDF Viewer at none against Subai's 1. Subai's advantage is iOS requirement (13.0 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Subai sells 1 one-off in-app purchase. Pico PDF Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

Subai ships an update fortnightly, Pico PDF Viewer weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Subai versus Pico PDF Viewer: the parameters behind the verdict, then further details
ParameterSubaiPico PDF Viewer
PriceFreeFree
Rating4.2 (5 ratings) — better—
Number of ratings5 — better—
Update frequencyFortnightlyWeekly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size175 MB7 MB
Age rating4+4+
Developerdong huu quanSHIH WEI LING

In-app purchases

1 purchases

Subai

One-time1
  • Basic$4.99
None

Pico PDF Viewer

No in-app purchases

Questions

Is Subai free?
Subai is free to download, with in-app purchases available.
Is Pico PDF Viewer free?
Pico PDF Viewer is free to download, with no in-app purchases.
Do Subai or Pico PDF Viewer have ads?
Both Subai and Pico PDF Viewer show ads.
Which is updated more often, Subai or Pico PDF Viewer?
Subai ships an update fortnightly, and Pico PDF Viewer weekly. Most recently, Subai was updated on November 4, 2026 and Pico PDF Viewer on October 31, 2026.

Other comparisons