Comparison

JettDB vs Terminull

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

Head to head
About

JettDB

Features
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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 โ€” 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 โ€” select, map, filter, group, sort, flatten, unique, and dozens more โ€” 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 โ€” 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 โ€” not afterthoughts. JSON5 SUPPORT Comments, trailing commas, unquoted keys, single quotes โ€” 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.

About

Terminull

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Terminull pairs with your Mac and lets you drive your AI coding agents from anywhere โ€” on your iPhone or iPad. Watch them work, steer them, approve changes. End-to-end encrypted. Start real coding sessions from the couch, the train, or away from your desk. Your agent runs on your own machine, with your own tools and files. Terminull is just the window into it. WORKS WITH THE AGENTS YOU ALREADY USE Drive all your favorite command-line coding agents out of the box โ€” including Claude Code, Codex, Gemini CLI, Cursor, Goose, and OpenCode. Terminull detects what is installed and drives it. Switch agent and model per session. BUILT FOR REAL WORK, NOT JUST CHAT - Rich streaming output: diffs, code blocks, to-do plans, and command results rendered natively - Multiple concurrent sessions with a live status carousel on your Lock Screen - Notifications when a session finishes, needs input, or hits an error โ€” even if the app was force-quit - Scheduled runs that start on their own - Voice input with on-device transcription โ€” dictate a task, hands-free PRIVATE BY DESIGN - End-to-end encrypted between your device and your Mac - Connects directly over your local network at home, or securely relayed when you are away - LAN-only mode keeps everything on your network with no cloud at all - No account required to pair with your own machine YOUR MACHINE, YOUR RULES The agent runs where your code lives. Nothing is uploaded to us โ€” Terminull relays encrypted messages, never your source. Set restricted paths, pick your models, and bring your own provider keys. Get started in under a minute: install the free Terminull companion โ€” a lightweight menu-bar app for your Mac โ€” scan the pairing QR, and you are connected.

Screenshots

JettDB3 screens
Terminull4 screens

Verdict

The call

The clearest difference is iOS requirement: Terminull 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 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 5 level
JettDB versus Terminull: the parameters behind the verdict, then further details
ParameterJettDBTerminull
PriceFreeFree
Update frequencyโ€”Every 5 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS26.517.0 โ€” better
Further details โ€” not scored
Size3 MB82 MB
Age rating4+12+
DeveloperGale WolfenbargerDmitry Ulyanov

In-app purchases

None

JettDB

No in-app purchases

None

Terminull

No in-app purchases

Questions

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

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