Comparison

PDB Viewer vs Internalize

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

Head to head
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 โ€” free, with no account, no ads, and no sign-up. WHERE THE MOLECULES COME FROM โ€ข RCSB Protein Data Bank โ€” 200,000+ experimentally determined structures โ€ข AlphaFold โ€” 200M+ AI-predicted protein models โ€ข SWISS-MODEL โ€” template-based homology models โ€ข PubChem and ChEMBL โ€” millions of drugs and compounds โ€ข Crystallography Open Database โ€” small-molecule crystals โ€ข NCI/CADD resolver โ€” 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 โ€ข Five representations: wireframe, ball-and-stick, space-filling (CPK), cartoon/ribbon, and a smooth molecular surface โ€ข Color by element, chain, secondary structure, rainbow, or AlphaFold confidence (pLDDT) โ€ข Biological assemblies: rebuild an entire icosahedral virus capsid from a few deposited chains โ€ข NMR ensembles: overlay every model in the bundle to watch a protein flex โ€ข Automatic secondary-structure detection MADE FOR TOUCH โ€ข Rotate, pinch-zoom, and pan with smooth native rendering โ€ข Tap any atom to see its element, residue, and chain โ€ข 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.

About

Internalize

Features
Read full description

Internalize turns dense papers into immersive, narrated explainers. Pick a paper and watch it come alive: a particle renderer highlights exactly what is being discussed while a clear voice walks you through the ideas, at the depth you choose. THREE DEPTHS - EXPERT: full technical detail - COLLEGE: clear, with everyday analogies - ELI5: explain it like you're five YOUR OWN PAPERS Sign in with Apple and import any PDF up to 60 MB. Internalize builds your explainer automatically (narration, highlights, diagrams), shows live progress while it works, and notifies you the moment it is ready. Your imports are private to your account, and you can delete your account and all data at any time, right in the app. MADE FOR FOCUS - Word-by-word text that follows the narration - Readout speed control, 0.8x to 1.5x - Jump to any page, figure, or equation - Diagram mode, dark mode, zoom-follow mode - Works on iPhone, iPad, and Mac

Screenshots

PDB Viewer4 screens
Internalize4 screens

Verdict

The call

The clearest difference is update cadence: Internalize at every 4 days against PDB Viewer's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PDB Viewer sells 1 one-off in-app purchase and Internalize sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDB Viewer ships an update monthly, Internalize every 4 days. Both last shipped on October 31, 2026.

Scorecard1 real difference ยท 5 level
PDB Viewer versus Internalize: the parameters behind the verdict, then further details
ParameterPDB ViewerInternalize
PriceFreeFree
Update frequencyMonthlyEvery 4 days โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, Mac โ€” better
Requires iOS16.0 โ€” better17.0
Further details โ€” not scored
Size2 MB10 MB
Age rating4+4+
DeveloperQvyshift LLCTrilon Apps

In-app purchases

1 purchases

PDB Viewer

One-time1
  • PDB Viewer Pro$9.99
3 purchases

Internalize

One-time3
  • 1 Import Credit$4.99
  • 5 Import Credits$17.99
  • 10 Import Credits$29.99

Questions

Is PDB Viewer free?
PDB Viewer is free to download, with in-app purchases available.
Is Internalize free?
Internalize is free to download, with in-app purchases available.
Do PDB Viewer or Internalize have ads?
Neither PDB Viewer nor Internalize shows ads.
Which is updated more often, PDB Viewer or Internalize?
PDB Viewer ships an update monthly, and Internalize every 4 days. Most recently, PDB Viewer was updated on October 31, 2026 and Internalize on October 31, 2026.

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