Engineer prompts like software.
A native iOS and iPadOS studio for building, testing, versioning, and shipping AI prompts. Multi-provider. On-device. Bring your own key.
v1.3 · iPhone & iPad · iOS / iPadOS 26
The problem
Your best prompts live in a Notes app, a Slack thread, and a forgotten ChatGPT conversation. When you tweak one, the old version is gone. When you switch models, you start from scratch. When someone asks "did that change make it better?" — you eyeball it.
Prompts are infrastructure now. They deserve the tools that infrastructure gets.
The solution
PromptOps treats prompts like code. Every edit creates a new version. Every version can be tested against a dataset. Every supported model is one tap away.
It runs natively on iOS 26 and iPadOS 26, stores everything on your device, and uses your own API keys — so the people who built it (us) never built the means to look at what you're working on.
What you get
Everything a serious prompt workflow needs, in your pocket.
Multi-provider, one workflow
OpenAI, Anthropic, Google Gemini, xAI, Ollama, and any OpenAI-compatible endpoint. Compare outputs without rewriting your prompt.
Version every change
Draft, publish, deprecate, roll back. A full version history per prompt. Never overwrite a prompt that was working.
Test before you ship
Datasets, 12 rule-based and 2 model-graded evaluators, suite runs with pass rates and scores. Know if a change moved the needle, with numbers.
Variables with guardrails
{{variable}} placeholders with required fields, min/max length, regex patterns, and enum validation. Catch bugs before they hit production.
47 production templates
Vision, tool-use, code generation, structured extraction, summarization, classification, agent loops. Start from patterns that already work.
Skills — chain prompts together
Order prompts into bundles or chains. Run them together; pipe each step's output into the next via {{previous_output}}. Build extract → summarize → translate flows that just run.
Side-by-side compare
Run two prompt versions or two providers against the same input. Read the responses next to each other. Decide which one ships.
Regression check
Replay any prior execution against the current version. Each result is classified Match, Equivalent, Changed, or Error so you spot drift after edits.
Sync your way
Push to a GitHub repo for code-style review workflows, or sync to iCloud Drive for a personal backup. Your repo, your iCloud, your control.
Privacy by design
No backend. No analytics. No telemetry. Prompts go directly from your device to the provider you chose.
Built for iOS & iPadOS 26
Liquid Glass chrome, SwiftUI throughout, instant cold start, full Dynamic Type and VoiceOver support. Native, not a wrapper.
See it
A prompt IDE that fits in your hand.
How it works
Four steps from blank prompt to production-ready output.
Design
Start from a template or a blank prompt. Add variables. Pick a model.
Test
Run it. Tweak it. Save versions as you go. Compare outputs across providers in seconds.
Evaluate
Build a test dataset. Attach evaluators. Run the suite. See pass rates per version.
Ship
Publish the version that works. Sync to GitHub. Use it in your app.
Built for
- Developers integrating LLMs into production apps
- Prompt engineers iterating on prompts that need to actually work
- Product teams experimenting with AI features before committing
- Researchers benchmarking models on their own data
- Anyone tired of pasting prompts between tabs
Why people pick PromptOps
- Bring your own key. No markup, no margin on top of your provider bill. Pay OpenAI or Anthropic directly, at their rates.
- No lock-in. Export the full database to JSON anytime. Sync to a GitHub repo you own. Take everything with you.
- No backend means no breach. There is nothing to compromise on a server because there is no server.
- Native, not a wrapper. Built specifically for iPhone and iPad, not a port of a web app.
Simple pricing
Free does real work on its own. Pro unlocks the workflow features.
Free
Everything you need to author, run, and evaluate prompts on your own.
- Prompt authoring with full versioning
- 47 seeded templates across 13 categories
- Single-prompt execution against any configured provider
- 12 rule-based + 2 model-graded evaluators
- Eval suites, datasets, and runs
- Full JSON export of your database
- No usage cap, no ads, no trial expiry
Pro
Or $39.99 / year (~33% off). 7-day free trial on monthly. Family-shareable.
- Skills — chained or bundled prompt flows
- Side-by-side compare across versions or providers
- Regression check — replay prior runs against new versions
- Sync to GitHub or iCloud, including Skills
- Custom OpenAI-compatible providers beyond the five built-ins
- All Free features included
Pro is an Apple In-App Purchase managed by your Apple ID. Cancel anytime in Settings. Provider API costs are billed directly to you by OpenAI, Anthropic, etc. — PromptOps adds no markup.
Privacy that's not a marketing line
PromptOps has no backend. No account system. No analytics SDK. When you execute a prompt, your iPhone or iPad makes the API call directly to the provider you chose. We never built the means to see your data.
Ready to engineer your prompts?
Free to download. Optional Pro at $4.99/mo or $39.99/yr.