Peak Pocket AI
A pocket lab for on-device AI
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Run language models entirely on your iPhone and measure how they behave: speed, confidence, recall, heat, and battery. Private by design, no account, works offline.
Peak Pocket AI is a lab for language models that run on your iPhone. Chat privately with open models, then look under the hood: how fast they generate, how confident they are in every word, how well they remember a long prompt, and how your phone holds up under sustained load.
PRIVATE BY DESIGN
Models run on the device. Your chats, notebook, photos, and settings never leave your iPhone. No account, no analytics, no ads. Once a model is downloaded, everything works in airplane mode.
A LAB NOTEBOOK FOR EVERY GENERATION
Every reply is recorded with its seed, settings, timings, and device state. Rerun any run with identical settings and see whether the output reproduces, character for character. Export runs as CSV or JSON, or as a signed report that anyone can check for changes.
LIVE TELEMETRY
Watch tokens per second, time to first token, memory, and thermal state as a reply streams in.
SEE WHAT THE MODEL WAS THINKING
Confidence shading shows how sure the model was of each word. Tap any word to see the alternatives it nearly chose, with their probabilities. Reasoning models show their thinking above the answer.
EVALUATIONS
Score models on built-in question sets for knowledge, math, tool calling, and structured JSON output, or import your own. Compare two models on the same questions with confidence intervals.
EXPERIMENTS
Run the same prompt and seed across models or settings. Measure how speed and memory change as the context fills, and test long-context recall: hide a fact at different depths of a long prompt and chart how often the model finds it.
ENDURANCE AND ENERGY
Measure what sustained generation does to your phone: throughput over time, throttling, thermal state, and battery used. An energy-per-token estimate is shown when a run is measured on battery.
VISION AND APPLE'S ON-DEVICE MODEL
Ask vision models about a photo, processed on the device. On iPhones with Apple Intelligence, chat with and evaluate Apple's built-in model alongside open models.
BRING YOUR OWN MODELS
Browse Hugging Face for GGUF models with a fit estimate for your phone's memory, including gated models with your access token. Optionally connect an OpenAI-compatible provider with your own API key; remote chats are clearly marked.
MAKE IT YOURS
Four themes in light and dark, including High Contrast, a colorblind-safe confidence scale, science personas, and share cards for any run or comparison.
Built by Peak Summit Labs.
- Protocols: one-button Speed check, Trust check, and Heat and battery tests that check the phone is ready first (cool, power, battery) and record exactly how they ran.
- Rigor levels for experiments: Standard alternates the models, discards a warmup run and lets the phone cool between repeats; results lead with the effect size and its 95% interval.
- Parameter sweep: time one model across settings such as flash attention, GPU layers and KV cache type.
- Blind arena: compare two models on your own prompts without knowing which wrote which, and build your own ranking.
- Simpler model settings: a sampling preset and a load profile (Auto, Max speed, Low memory) on top, a list of what differs from the defaults, and every control still under All controls.
- LoRA adapters, a chat template viewer, and quick comparison of the same model at different quantizations.
- Siri and Shortcuts: ask your model, run a quick benchmark, or open the Lab.
- Every run records the engine that produced it and whether the GPU was used; evaluations draw a random seeded sample of questions and show intervals for calibration.
- Experiments let you choose the reply length and turn thinking off or on.
- Scrolling up while a reply streams no longer pulls you back down; swipe down to hide the keyboard mid-reply.
- A clear message when a chat fills the model's context window.
The developer, Myron Koch, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Peak Summit Labs LLC
- Size
- 56.9 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Infrequent
Cartoon or Fantasy Violence
Realistic Violence
Profanity or Crude Humor
Mature or Suggestive Themes
Horror/Fear Themes
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
Sexual Content or Nudity
Guns or Other Weapons
- Copyright
- © 2026 Peak Summit Labs LLC
