Comparison

Shadow Vault vs Bubble Diagram Maker

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

Head to head
About

Shadow Vault

Securely store your private notes, photos, videos, and contacts in one place. Organize your hidden data with a powerful tagging system and access it easily with biometric authentication. Sync your information across devices for seamless management.

Highlights
  • Biometric lock (Touch ID/Face ID)
  • iCloud sync
  • Markdown support for notes
  • Delete original media after import
  • Omni toolbar for editing
  • Tagging system for organization
Features
Read full description

Store your notes, photos and videos, contacts all in one app! With a powerful tagging system to help you organize and navigate all your hidden data. You will need to enable lock screen after installing app in order to use the feature. Features: - Lock Screen with support for Touch ID and Face ID - iCloud sync so you can use across your iPhone and iPad - Markdown support for notes - Support to delete original photos and videos after import to [App Name] - Omni toolbar with consistent UX to help you edit at any tabs.

About

Bubble Diagram Maker

Create visual diagrams for planning, conceptual thinking, and organization. Easily arrange and customize elements to bring your ideas to life without complex tools. Save and share your creations privately.

Highlights
  • Tap & Drag Creation
  • Full Customization (color, size, label)
  • Unlimited Diagrams
  • Save & Share
  • Offline Functionality
  • Ad-Free Experience
Features
Read full description

A diagram tool that thinks in bubbles instead of straight lines. If you have ever tried to capture a messy idea inside a rigid outline, or fought a flowchart app that demanded structure before you even knew the shape of the problem, this is the calmer alternative. Bubble Diagram Maker is built for architects sketching spatial programs, designers tracing user flows, students mapping concepts, product people roughing out features, researchers organising literature, and anyone who thinks in relationships rather than rows. The philosophy is simple: let the layout follow the thought, not the other way around. No account to create, no sign-in wall, no cloud lock-in pushing your work into someone else's database, and no friction sitting between the moment of insight and the page where it lands. This is a mind mapping app that respects how messy real thinking actually looks before it becomes a finished diagram, and it treats brainstorm sessions as the loose, exploratory work they really are. Open the canvas and start dropping bubbles with labels, colours and sizes that match their weight in your head — the central idea large, supporting nodes smaller, vague hunches smaller still. Connect them with solid, dashed or weighted lines to show how concepts relate, overlap them as a Venn diagram when two ideas share territory, and drag freely until the layout feels right. Templates cover mind map, spatial program, Venn and concept map starting points so you never stare at an empty page, undo and redo work everywhere so experimentation is cheap, and finished diagrams export as PNG, PDF or SVG ready to drop into a presentation, brief, thesis or client deck. Pinch to zoom across a wall-sized canvas, lock individual bubbles when the layout is settled, group related nodes so an entire branch of the mind map moves together, and pull bubbles apart again when the structure changes. Apple Pencil support turns the iPad into a proper visual thinking surface for sketching idea maps, flow diagram drafts and concept maps by hand, with palm rejection that keeps the canvas clean. A quick-add mode lets you brainstorm at speed without leaving the keyboard, colour palettes are tuned for readability rather than decoration, and a focus mode dims everything except the bubble you are currently editing. Diagrams are organised into projects so a thesis, a renovation brief and a product roadmap stay separate without folders fighting you. Search works across every label in every diagram, so a half-remembered concept map from three months ago is one tap away. A thought map view turns a long brainstorm into a clean outline whenever you need to hand the idea to a document, and a presenter mode walks through a diagram one branch at a time when you need to explain it to a room. This diagram maker works fully offline — your data stays on this device, no analytics watching how you brainstorm, no thought map ever leaving your phone or iPad, and no servers in the loop between you and your canvas. The interface ships in 39 languages with full VoiceOver, Dynamic Type and reduced-motion support, the canvas stays calm and quiet, and the whole app is intentionally free of ads, pop-ups and engagement nudges. Whether you are roughing out a floor plan, mapping the chapters of a book, planning a research project, designing a service flow or just trying to get the noise in your head onto a single page, this is a mind mapper built to disappear behind the work and let the idea take the shape it actually wants. A quiet diagram tool for visual thinking, nothing more, nothing pretending to be more.

Screenshots

Shadow Vault4 screens
Bubble Diagram Maker4 screens

Verdict

The call

The clearest difference is review sentiment: Bubble Diagram Maker at 50% against Shadow Vault's 0%. Bubble Diagram Maker also leads on in-app purchases (none vs 1) and ads (none vs shown). Shadow Vault's advantage is iOS requirement (16.0 vs 18). On price, update cadence 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. Shadow Vault sells 1 one-off in-app purchase. Bubble Diagram Maker asks for nothing beyond the download.

UpkeepUpdate frequency

Shadow Vault ships an update every 5 weeks, Bubble Diagram Maker every 3 weeks. The most recent releases landed on June 5, 2026 and September 6, 2026 respectively.

Scorecard5 real differences · 5 level
Shadow Vault versus Bubble Diagram Maker: the parameters behind the verdict, then further details
ParameterShadow VaultBubble Diagram Maker
PriceFreeFree
Rating3.6 (7 ratings) — better
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings7 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18
Further details — not scored
Size13 MB4 MB
Age rating4+4+
DeveloperTung VuBahattin Duran

Customer experience

Shadow Vault

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bubble Diagram Maker

All ratings7 ratings
Positive42.9%
Neutral42.9%
Negative14.3%
Written reviews4 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

1 purchases

Shadow Vault

One-time1
  • Remove Advertisement$7.99
None

Bubble Diagram Maker

No in-app purchases

Questions

Is Shadow Vault free?
Shadow Vault is free to download, with in-app purchases available.
Is Bubble Diagram Maker free?
Bubble Diagram Maker is free to download, with no in-app purchases.
Do Shadow Vault or Bubble Diagram Maker have ads?
Shadow Vault shows ads; Bubble Diagram Maker does not.
Which is updated more often, Shadow Vault or Bubble Diagram Maker?
Shadow Vault ships an update every 5 weeks, and Bubble Diagram Maker every 3 weeks. Most recently, Shadow Vault was updated on June 5, 2026 and Bubble Diagram Maker on September 6, 2026.

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