Comparison

القصص vs PDB Viewer

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

Head to head
About

القصص

Features
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An application for enriching the language of children with Developmental Language Disorder through stories that reflect the Kuwaiti culture and traditions. • Free application that includes four stories from the Kuwaiti culture. • The story is narrated in Arabic/Kuwaiti dialects. • Stories include animations. • Ability to show or hide text as desired. • Ability to stop narration. • Ease of use; does not require reading knowledge. برنامج لإثراء اللغة العربية عند الأطفال الذين يعانون من اضطراب باللغة باستخدام قصص تعكس البيئة الكويتية وتقاليدها. • برنامج مجاني يشمل أربعة قصص من واقع البيئة الكويتية • يتم سرد القصة باللغة العربية أو اللهجة الكويتية • تشتمل القصص على رسوم متحركة شيقة للأطفال • إمكانية إظهار أو إخفاء النص حسب الرغبة • إمكانية إيقاف السرد • سهولة الاستخدام لا يتطلب المعرفة بالقراءة

About

PDB Viewer

Features
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PDB Viewer turns your phone into a molecular microscope. Search the entire Protein Data Bank and over 200 million AlphaFold predictions, then explore any protein, virus, drug, or DNA structure in interactive 3D — free, with no account, no ads, and no sign-up. WHERE THE MOLECULES COME FROM • RCSB Protein Data Bank — 200,000+ experimentally determined structures • AlphaFold — 200M+ AI-predicted protein models • SWISS-MODEL — template-based homology models • PubChem and ChEMBL — millions of drugs and compounds • Crystallography Open Database — small-molecule crystals • NCI/CADD resolver — type a chemical name and get a 3D model Every source is free and needs no API key. You can also open your own .pdb and .cif files. WAYS TO SEE IT • Five representations: wireframe, ball-and-stick, space-filling (CPK), cartoon/ribbon, and a smooth molecular surface • Color by element, chain, secondary structure, rainbow, or AlphaFold confidence (pLDDT) • Biological assemblies: rebuild an entire icosahedral virus capsid from a few deposited chains • NMR ensembles: overlay every model in the bundle to watch a protein flex • Automatic secondary-structure detection MADE FOR TOUCH • Rotate, pinch-zoom, and pan with smooth native rendering • Tap any atom to see its element, residue, and chain • Recently viewed structures are cached, so they reopen instantly and work offline For students, researchers, teachers, and the simply curious. PDB Viewer makes structural biology beautiful and accessible. Structures are provided by their respective databases. PDB Viewer is independent and not affiliated with or endorsed by the RCSB PDB, EMBL-EBI, or AlphaFold.

Screenshots

PDB Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: القصص at none against PDB Viewer's 1. القصص also leads on iOS requirement (12.0 vs 16.0). PDB Viewer's advantage is update cadence (monthly vs every 57 months). 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. PDB Viewer sells 1 one-off in-app purchase. القصص asks for nothing beyond the download.

UpkeepUpdate frequency

القصص ships an update every 57 months, PDB Viewer monthly. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 3 level
القصص versus PDB Viewer: the parameters behind the verdict, then further details
ParameterالقصصPDB Viewer
PriceFreeFree
Update frequencyEvery 57 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPadiPhone, iPad — better
Requires iOS12.0 — better16.0
Further details — not scored
Size56 MB2 MB
Age rating4+4+
DeveloperNoura AlGhurairQvyshift LLC

In-app purchases

None

القصص

No in-app purchases

1 purchases

PDB Viewer

One-time1
  • PDB Viewer Pro$9.99

Questions

Is القصص free?
القصص is free to download, with no in-app purchases.
Is PDB Viewer free?
PDB Viewer is free to download, with in-app purchases available.
Do القصص or PDB Viewer have ads?
Neither القصص nor PDB Viewer shows ads.
Which is updated more often, القصص or PDB Viewer?
القصص ships an update every 57 months, and PDB Viewer monthly. Most recently, القصص was updated on November 7, 2026 and PDB Viewer on November 10, 2026.

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