Comparison

PocketSpec vs JettDB

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

Head to head
About

PocketSpec

Features
Read full description

PocketSpec is a read-only viewer for comfortably reading the Markdown specifications inside your GitHub repositories, right on your iPhone and iPad. Check the design docs and specs stored in your project's docs/ folder anytime, anywhere. It isn't tied to a single repository — register multiple projects as a "spec bookshelf" and switch between them to read. ■ Key features • GitHub integration (read-only) Sign in with GitHub and securely fetch only the contents of the repository, branch, and documentation folder you specify. It never edits or commits files. • Clean Markdown rendering Supports headings, lists, code blocks, tables, images, and links. Optimized so even long specifications are comfortable to read. • Mermaid diagram rendering Renders Mermaid code such as flowcharts and sequence diagrams as real diagrams. Tap to zoom to full screen. • Manage multiple projects Set a repository, branch, and display folder per project. The last opened project and document are restored on launch. • Offline support Once fetched, content is cached on device, so you can read your most recently synced specs even with no connection. • Secure by design Limits the visible content to the folder you specify; it never reads source code or configuration files. Access tokens are stored only in the device Keychain and are never sent to any external server. ■ Who it's for • Engineers who want to quickly check their project's specs on the move or before a meeting • Anyone who wants to read documentation from multiple development repositories in one place • Anyone who wants to safely view private-repository design docs from their iPhone ■ Before you start Using this app requires a GitHub account and read access to the target repositories. To read private repositories, install the dedicated GitHub App on the target repository (the only permission required is Contents: read-only).

About

JettDB

Features
Read full description

JettDB is the JSON editor people reach for first. Whether you're a developer wrangling API responses, a data analyst cleaning up a messy export, or someone who just opened a .json file for the first time and wants to actually read it, JettDB makes JSON approachable on iPhone, iPad, and Mac. A visual tree editor lets you expand, collapse, edit, and rearrange JSON without touching a single bracket. A syntax-highlighted text editor sits one tap away for when you'd rather type. Toggle between them at will — your document stays the same. QUERY WITHOUT THE LEARNING CURVE Build jq-style queries by pointing and clicking. Pick an operation from a curated list — select, map, filter, group, sort, flatten, unique, and dozens more — and JettDB shows you the result instantly. Save the pipelines you use often to a personal library. The Ask in plain English pane understands phrases like "books with rating over 4" or "append a new tag to every entry." EDIT IN BULK Mass-edit operations let you add, rename, delete, or change fields across an entire document in one pass. Every change previews before it lands, and undo is always one tap away. FIND DUPLICATE RECORDS Point at any array of records, pick a field, and JettDB flags every group that shares a value — perfect for catching copy-paste mistakes in ids, names, or ISBNs. COMPARE, VALIDATE, AND CONVERT Side-by-side diff highlights exactly what changed between two documents. JSON Schema validation flags structural issues with clear, plain-language errors, and schema inference builds a starting schema from any document with one tap. Import from JSON, JSON Lines, the clipboard, or a URL; export to JSON, CSV, YAML, or XML, or send a document by email. BUILT FOR THE APPLE ECOSYSTEM Native SwiftUI on every device. iCloud sync keeps your library in step across iPhone, iPad, and Mac. The Mac build ships full menu bar support, middle-click autoscroll, and keyboard shortcuts for everything. Dynamic Type, VoiceOver, and high-contrast support are first-class — not afterthoughts. JSON5 SUPPORT Comments, trailing commas, unquoted keys, single quotes — JettDB reads and writes JSON5 when you want it to, and stays strict when you don't. PRIVATE BY DEFAULT Your documents live in your iCloud, not ours. No analytics, no tracking, no account required. Nothing leaves your device unless you choose to share it. A bundled sample library shows you the ropes; the in-app help is searchable, and the tutorial tips and jq cheat sheet are written for humans, not parsers. JettDB. The JSON editor people reach for first.

Screenshots

PocketSpec4 screens
JettDB3 screens

Verdict

The call

The clearest difference is iOS requirement: PocketSpec at 17.0 against JettDB's 26.5. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 4 level
PocketSpec versus JettDB: the parameters behind the verdict, then further details
ParameterPocketSpecJettDB
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.0 — better26.5
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperShun KiyouraGale Wolfenbarger

In-app purchases

None

PocketSpec

No in-app purchases

None

JettDB

No in-app purchases

Questions

Is PocketSpec free?
PocketSpec is free to download, with no in-app purchases.
Is JettDB free?
JettDB is free to download, with no in-app purchases.
Do PocketSpec or JettDB have ads?
Neither PocketSpec nor JettDB shows ads.

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