MetaPromptLab: On-Device AI
Pro prompts from any idea
Free · In‑App Purchases · Designed for iPad
Stop fighting ChatGPT for a good answer. Type one rough idea and Meta Prompt Lab turns it into an expert-level prompt with 20 private on-device AI agents in seconds.
Most people write vague prompts and get vague answers. Meta Prompt Lab fixes that. Your idea passes through a 20-agent pipeline that handles intent, audience, constraints, examples, output format, and quality checks. The result is a clean, ready-to-use prompt you can paste into ChatGPT, Claude, Gemini, or Copilot, plus a structured MetaPromptSpec JSON export when you need repeatable work. Go Pro to unlock the full pipeline and run unlimited prompts.
WHY IT WORKS
- 20-agent on-device pipeline builds prompt structure, clarity, and completeness
- Quality score across clarity, specificity, actionability, signal-to-noise, and domain fit, so you know it is strong before you use it
- Prompt Vault to save, tag, and reuse your best prompt packs
- Presets for writing, coding, research, learning, marketing, hiring, and creative work
- Live pipeline progress so you can watch each stage complete
PRIVATE BY DESIGN
Your prompt text is processed on your device. No account is required for the core workflow. Prompt generation never uses cloud processing, no prompts are sent to a server, and your ideas stay yours. Works offline.
FREE VS PRO
Free: 5 runs per day, 8 of the 20 agents, starter Vault and History, starter presets, and limited refine chat.
Pro: unlimited runs, the full 20-agent pipeline, full Vault and History, all presets, export tools, unlimited refine chat, and the complete quality breakdown.
Not ready to commit? Build a 7-day streak and unlock a Pro Preview with full 20-agent runs at no cost.
SUBSCRIPTION
Meta Prompt Lab Pro is available as Monthly, Yearly, and Lifetime access where supported. Prices vary by region and are shown before purchase. Monthly and Yearly subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in account settings.
Privacy Policy: https://ivanhub.co.uk/metapromptlab/privacy
Terms of Use: https://ivanhub.co.uk/metapromptlab/terms
more What's new in 2.0.9:
• Bigger, smoother pipeline animation — watch all 20 agents build your prompt on iPad and Mac.
• A more premium Create screen: sharper glass, cleaner layout.
• Smarter Refine chat that understands your prompt better.
Always free to start. 100% on-device — private, offline, no account.
2.0.9 2d ago
What's new in 2.0.8:
• Bigger, smoother pipeline animation — watch all 20 agents build your prompt on iPad and Mac.
• A more premium Create screen: sharper glass, cleaner layout.
• Smarter Refine chat that understands your prompt better.
Always free to start. 100% on-device — private, offline, no account.
2.0.8 2d ago
• Refine without limits — keep chatting with on-device Apple Intelligence to reshape any prompt as much as you want.
• A smoother, more responsive Refine chat that streams replies as they arrive, like a real conversation.
• Visual polish on the Create screen.
2.0.7 4d ago
Refined for iOS 26.
• A deeper, more tactile Liquid Glass design across every screen, with smoother motion and richer detail.
• Calmer, faster pipeline visuals — and a cleaner experience when a run can't complete.
• Tapping a saved prompt in History now reliably opens its full details.
• A range of polish, accessibility, and reliability improvements.
2.0.6 5d ago
New: a value card surfaces right after your pipeline completes, showing you the biggest win from your session.
New users can run a sample prompt in one tap during onboarding — zero friction, straight into the real thing.
We also fixed an issue where subscription details could fail to load on spotty connections.
2.0.5 5d ago
This update fixes a crash some people could hit when starting a pipeline run, so your prompts now build smoothly and reliably every single time.
We also refined the live animation: a single calm, glowing orb, softer energy arcs that grow into each step, and a deeper, more focused background.
Steadier, cleaner, and easier to follow from start to finish.
2.0.4 6d ago
Refined the running pipeline animation for a cleaner, more focused look.
A single bright orb now anchors the screen, with a full ring of nodes that lights up in clockwise order as each step completes.
Electric arcs reach out and grow into every node, so you can watch your prompt take shape in real time.
Smoother, brighter, and easier to follow from start to finish.
2.0.3 May 30
Reimagined the live pipeline: a cinematic plasma orb with lightning that strikes out to each AI agent as it runs. Smoother, faster, and more premium throughout. Plus a refreshed Refine screen and polish across the app.
2.0.2 May 30
Premium running screen overhaul. The Living Orb is rebuilt with a swirling nebula interior, dense starfield, a bright pinpoint core, and an energy tendril that connects the active agent to the orb in real time. Constellation arms now grow as each agent completes its work. Smoother pipeline log animations and refined glass header. Reduce Motion and Low Power Mode fully respected.
2.0.1 May 29
v2.0.0 is a complete visual overhaul. New Living Orb pipeline hero, refreshed Liquid Glass surfaces, smoother per-agent handoffs, and tightened motion across every screen. The on-device privacy promise is unchanged: 20 agents, your prompt, no cloud.
2.0.0 May 26
This release sharpens Liquid Glass across the app and quietly extends battery life.
Highlights
- Liquid Glass refinements across Create, Refine, History, and Vault
- Battery-aware animations: when iOS Low Power Mode is on, animations dial back automatically
- Accessibility polish: improved VoiceOver labels and tighter focus paths
- Snappier history loading and clearer locked-row affordances
Thanks for using MetaPromptLab. As always, your prompts never leave your device.
1.9.92 May 20
v1.9.91
Polish release. Same 20-agent on-device pipeline, smoother every step.
Premium pipeline motion
Pipeline DAG view now renders curved Bézier edges, particle comet trails, hot-core ignition flashes, and staggered halo ripples as each of the 20 agents completes. Free and Pro tiers see different motion intensities, calibrated for clarity at small screen sizes.
Refined app icon
App icon refreshed with a higher-contrast, more vivid version that reads cleanly at every size from Spotlight thumb to large Home Screen tile.
Tier-aware agent counter
Pipeline now displays 8 of 8 agents for free users and 20 of 20 agents for Pro and Lifetime subscribers, with a live odometer-style count that ticks as each agent completes.
Smarter preset prompts
Tapping a preset prompt now replaces the input field instead of appending. Rapid double-taps are filtered to prevent accidental concatenation of two different presets.
Stability and reliability
Animation runtime hardened: deterministic gradient stop ordering, zero-width frame guards, smoother frame pacing on iPhone 12-class devices.
Privacy unchanged
All 20 agents still run entirely on your device. No prompt text, no personal data, no analytics payload leaves your iPhone, iPad, or Mac.
1.9.9A May 16
v1.9.9
Polish release. Same Apple Intelligence pipeline, smoother every step.
Premium pipeline motion
Pipeline DAG view now renders curved Bézier edges, particle comet trails, hot-core ignition flashes, and staggered halo ripples as each of the 20 agents completes. Free and Pro tiers see different motion intensities, calibrated for clarity at small screen sizes.
Refined app icon
App icon refreshed with a higher-contrast, more vivid version that reads cleanly at every size from Spotlight thumb to large Home Screen tile.
Stability and reliability
Animation runtime hardened: AgentTimeline gradient stops now ordered deterministically, zero-width frame dimensions guarded, motion tokens tuned for smoother frame pacing on iPhone 12-class devices.
Privacy unchanged
All 20 agents still run entirely on your device. No prompt text, no personal data, no analytics payload leaves your iPhone, iPad, or Mac. This is an architectural constraint, not a policy.
1.9.9 May 15
v1.9.7
Cleaner paywall. Smarter scoring. Live updates.
Paywall layout
The subscribe screen has been redesigned so the Subscribe button is the primary action, with auto-renewal disclosure sitting below the fold. This matches consumer-law guidelines and makes the upgrade decision cleaner.
Live Activities and Dynamic Island
MetaPromptLab now pushes real-time pipeline progress to the Dynamic Island and Lock Screen during a run. Watch individual agents complete as your prompt is being engineered — no need to stay in the app.
On-device prompt-quality classifier
A new lightweight classifier pre-screens your input before the 20-agent pipeline starts. It flags ambiguous or under-specified prompts early, so the pipeline has better material to work with and your quality scores improve from the first run.
Search Ads improvements
SKAdNetwork v3 conversion-value patches are now live. Invisible to you as a user, but they let us accurately measure which keywords convert and reinvest the ad budget in channels that bring engaged users.
Premium plan path
Several small friction points on the upgrade and settings flow have been resolved. The route from free tier to Pro is now shorter, and subscription state reflects immediately after purchase.
Stability and reliability
Post-ship review from v1.9.6 has been addressed: minor edge cases in JSON parsing, QualityScorer tie-breaking, and history writes are all resolved.
Privacy note
Nothing has changed here. All 20 agents run entirely on your device. No prompt text, no personal data, no analytics payload leaves your device. That is a hard architectural constraint, not a policy.
What is coming next
The next train will bring cloud sync for your prompt vault, a referral mechanic for Pro members, and three new onboarding flows tuned for writing, coding, and research. No committed dates — we ship when it is right.
Thank you to everyone who filed feedback on the paywall layout and Live Activities timing. v1.9.7 is directly shaped by those reports.
Tap to install — free. Pro anytime.
1.9.8 May 15
v1.9.7
Cleaner paywall. Smarter scoring. Live updates.
Paywall layout
The subscribe screen has been redesigned so the Subscribe button is the primary action, with auto-renewal disclosure sitting below the fold. This matches Apple and UK consumer law guidelines and makes the upgrade decision cleaner for everyone.
Live Activities and Dynamic Island
MetaPromptLab now pushes real-time pipeline progress to the Dynamic Island and Lock Screen during a run. Watch individual agents complete as your prompt is being engineered — no need to stay in the app.
On-device prompt-quality classifier
A new lightweight classifier pre-screens your input before the 20-agent pipeline starts. It flags ambiguous or under-specified prompts early, so the pipeline has better material to work with and your quality scores improve from the first run.
Apple Search Ads improvements
SKAdNetwork v3 conversion-value patches are now live. These are invisible to you as a user but mean the app can accurately measure which keywords lead to Pro subscribers — which in turn lets us invest the Apple Search Ads budget in channels that actually bring in engaged users.
Premium plan path
Several small friction points on the upgrade and settings flow have been resolved. The route from free tier to Pro is now shorter, and subscription state reflects immediately after purchase.
Stability and reliability
Post-ship code review from v1.9.6 has been addressed: minor edge cases in JSON parsing, QualityScorer tie-breaking, and SwiftData history writes are all resolved.
Privacy note
Nothing has changed here. All 20 agents run entirely on your device via Apple Intelligence (FoundationModels). No prompt text, no personal data, no analytics payload leaves your iPhone or iPad. That is a hard architectural constraint, not a policy.
What is coming next
The next train will bring iCloud sync for your prompt vault, a referral mechanic for Pro members, and three new onboarding flows tuned for different use cases (writing, coding, research). No committed dates — we ship when it is right.
Thank you to everyone on TestFlight who filed feedback on the paywall layout and Live Activities timing. v1.9.7 is directly shaped by those reports.
Tap to install — free. Pro anytime.
1.9.7 May 14
Meta Prompt Lab 1.9.6 — what's new
• ASA attribution: SKAdNetwork conversion-value postbacks now fire on trial-start (25/.medium), paid monthly (50/.high), and paid yearly/lifetime (63/.high+lockWindow) so Apple Search Ads can attribute subscribers privately.
• Stability: rebuilt Info.plist + project config under Xcode 26 to clear a sync-group resource conflict.
• No new permissions, no third-party SDKs, no data leaving your device.
Carried forward from 1.9.5: iOS 26 tinted/dark app icon, redesigned Pro upgrade screen, premium pipeline animation with glowing trails, live agent logs streaming in real time. Free users see all 8 of 8 agents.
1.9.6 May 12
Meta Prompt Lab 1.9.4
- IAP compliance: In-app promo codes replaced with Apple's native Offer Code system. Tap Redeem Offer Code in Settings to apply Apple offer codes from us.
- Clearer positioning: subtitle updated to "AI Prompt Engineer & Builder" so you know exactly what you're getting before you download.
- Master keyword strategy: refined search terms across 27 languages — better worldwide discovery for the users who need this tool.
- Polish and stability: quality improvements from the v1.9.3 foundation, fewer rough edges, faster feel.
Free: 5/day. Pro: unlimited. Build a 7-day streak to unlock a Pro Preview.
1.9.4 May 7
Meta Prompt Lab 1.9.2
• Home Screen & Lock Screen Streak Widget — add the 3-size widget to track your streak without opening the app. Tap to jump straight into a new prompt.
• Live Activity quality badge — when a pipeline finishes, your Dynamic Island and Lock Screen show the quality score so you see how strong the output is at a glance.
• Day-6 streak nudge — get a reminder when you’re one day away from unlocking a Pro Preview, so you never lose a streak by accident.
• Drag your Prompt Pack out — long-press any generated Prompt Pack and drag it straight into Notes, Mail, Slack, or Files. No copy-paste needed.
• Preset tips — new hints in the Create tab show you when and how to use each preset, so you always start from the right template.
• Save-Pack star — star a Prompt Pack to save it instantly. Hit a 7-day streak and unlock 3 full Pro pipeline runs free.
Free: 5/day. Pro: unlimited. Build a 7-day streak to unlock a Pro Preview.
1.9.2 May 6
Version 1.9 — sharper, faster, more private.
• New on-device subtitle and benefit-led screenshots.
• Quality gates now flag open-ended directives before you paste.
• Pipeline runs faster on iPad and Apple Silicon Macs.
• Prompt Vault search is instant, even on 1,000+ saved packs.
Free: 5 runs/day. Pro: unlimited. Streak 7 days for a Pro Preview.
1.9.0 May 4
Smoother streak countdown, sharper agent tooltips, faster pipeline runs on iPad.
Quality scoring now flags open-ended directives, so your Prompt Pack lands cleaner the first time you paste it into ChatGPT, Claude, or Gemini.
Your prompts still never leave the device — Apple Intelligence, locally, always.
Free: 5 runs/day. Pro: unlimited. Build a 7-day streak for a Pro Preview.
1.8.0 Apr 30
v1.7.3
Bug fixes and reliability improvements.
Daily run limits now use a monotonic clock to prevent bypass attempts.
1.7.3 Apr 29
v1.7.2
Smarter free-tier agents — the 8 agents available on the free plan now include Chain-of-Thought Architecture and Evaluation Criteria, two of the most impactful reasoning steps in the pipeline. Free output is noticeably sharper.
Four new quality checks — four additional checks now run on every Pro result: open-ended directive detection, model-specific syntax flagging, token budget reasonableness, and confidence calibration. Pro users see hard failures; free-tier users see these as upgrade signals.
Tighter output validation — the final validation pass now runs after the full prompt is assembled, catching issues that only appear once all components are combined. Results are cleaner and more consistent.
Faster first launch — onboarding loads more reliably on first install.
Everything runs on-device with Apple Intelligence. No accounts, no cloud, no data collection.
1.7.2 Apr 28
v1.6.1
Agent Console fix — text no longer clips inside oval shapes. Abbreviations render cleanly with proportional font and wider frames. Filter pill tap targets enlarged.
Input lock — the prompt input now dims and shows a lock overlay with the active agent name while the pipeline runs. Prevents accidental edits during processing.
Animated header — the "Meta Prompt Lab" header displays a flowing Apple Intelligence-style multicoloured border while the pipeline is active. Respects Reduce Motion.
Agent count visibility — the compact running header and pipeline status now show how many agents are active (e.g. "8 of 20 agents" for free users).
Visual polish — removed distracting sparkle animation, improved character progress bar contrast, cleaner run button section.
Improved microcopy — benefit-led descriptions throughout ("Ready to paste into any AI").
Bug fixes and stability improvements.
1.6.1 Apr 25
v1.6.0
Celebration dismiss fix — tapping anywhere on the success overlay now dismisses it correctly. Dismiss timing race condition resolved.
Locked-item privacy — confidence and quality scores are now properly redacted in Vault and History for free-tier items. Pro users see full metrics.
Task cancellation — pipeline cancellation now properly cleans up all running agent tasks.
Bug fixes and stability improvements.
1.6.0 Apr 23
v1.5.1 — iPad Layout Overhaul + Visual Polish
• State-driven iPad layout: centered workspace when idle, 35/65 split during pipeline runs
• 2-column grids for History and Vault on iPad
• Responsive chat bubbles and input bar for iPad Pro
• 60fps glass animations (was 15fps), synced loading effects
• Pro pipeline always runs full 20-agent analysis regardless of toggle state
• VoiceOver: phase transition announcements, selection state feedback
• Smarter access control: search and filter can no longer accidentally unlock Pro items
• DAG visualization: proper cache invalidation on Pro upgrade and layout changes
• 142 tests passing, zero regressions
1.5.1 Apr 16
What's new in 2.0.9:
• Bigger, smoother pipeline animation — watch all 20 agents build your prompt on iPad and Mac.
• A more premium Create screen: sharper glass, cleaner layout.
• Smarter Refine chat that understands your prompt better.
Always free to start. 100% on-device — private, offline, no account.
more Version 2.0.9 2d ago
Data Not Collected The developer does not collect any data from this app.