Your app's performance data,
without opening Xcode.
AppKestrel pulls hang rates, battery drain, launch times, and more from Apple's network — and alerts your whole team the moment something regresses. No Mac required.
Every metric Apple exposes — in one dashboard
No SDK to install. No code changes. Just connect your App Store Connect account and get instant access to real user data.
Battery Drain
2.14%/hr
How much battery your app consumes per hour of active use. Catch power-hungry background activity and wake locks.
Hang Rate
0.82% of sessions
UI freezes where the main thread is blocked for over 250ms. Every hang is a frustrated user.
Disk Writes
13 MB/session
Excessive disk writes accelerate battery drain and wear flash storage. Keep your write footprint lean.
Launch Time
842 ms cold start
Time from tap to first interactive frame. Slow launches push users to competitors.
Memory Usage
118 MB avg
Average memory footprint across sessions. High memory means more terminations in the background.
Terminations
0.48% of sessions
Background termination rate driven by memory pressure or watchdog timeouts. Lower is always better.
Spot regressions the moment they ship
View up to 90 days of history across all six metrics. App version releases are overlaid directly on the chart — so you can see instantly which build caused the spike.
- 7D, 30D, and 90D windows
- Version release markers overlaid on chart
- Switch between all 6 metric categories
- Day-over-day change and trend direction
| Version | Battery | Hangs | Launch | Memory | Disk |
|---|---|---|---|---|---|
2.4.1Latest | 2.14% | 0.82% | 842ms | 118MB | 13MB |
2.4.0 | 2.41% | 0.94% | 868ms | 115MB | 15MB |
2.3.2 | 2.38% | 0.89% | 851ms | 113MB | 14MB |
Compare every release, every metric
See all five performance metrics side-by-side across your recent releases. Know exactly which version introduced a regression — and confirm your fix worked before rolling out further.
- All metrics compared across versions at a glance
- Color-coded improvements and regressions
- Covers battery, hangs, launch time, memory, and disk
- Instant feedback on whether your latest release improved things
Find out which devices suffer most
Not all iPhones behave the same. A battery drain issue on iPhone 12 might not appear on iPhone 16. The device and iOS breakdown pinpoints exactly where to focus your optimization effort.
- Heat map across every device model in your user base
- Slice by iOS version to catch OS-specific issues
- Covers battery, hangs, launch time, memory, and disk
- Identify outlier devices driving your worst metrics
| Device | Battery | Hangs | Launch | Memory | Disk |
|---|---|---|---|---|---|
| iPhone 16 Pro | 1.91% | 0.61% | 782ms | 104MB | 11MB |
| iPhone 15 | 2.14% | 0.82% | 842ms | 118MB | 13MB |
| iPhone 13 | 2.58% | 1.12% | 934ms | 134MB | 16MB |
| iPhone 12 | 3.21% | 1.48% | 988ms | 141MB | 17MB |
Main thread blocked in -[NetworkManager fetchUserData:]
Excessive writes in -[CacheManager persistToDisk:]
Slow initialization in +[AppDelegate setupSDKs]
Pinpoint the exact code causing problems
Apple's diagnostic signatures surface the actual call stack behind hangs, excessive disk writes, and slow launches. AppKestrel surfaces these with regression and severity badges so you know where to look first.
- Real call stacks from Apple's diagnostics API
- Regression, New, and Common severity badges
- Covers hangs, disk writes, and launch issues
- Weighted by frequency — fix the highest impact first
Stop remembering to check. Start getting notified.
Xcode Organizer only shows you data when you open it. AppKestrel monitors daily and emails your team the moment a metric regresses — so nothing slips through between releases.
Daily digests
Emailed summary of all metrics every morning — readable on any device
Regression alerts
Notified the moment Apple surfaces a metric spike, not the next time you open Xcode
Configurable thresholds
Set your own acceptable limits so you only hear about regressions that matter
AppKestrel vs Xcode Organizer
Xcode Organizer is great — if you're at your Mac, with Xcode open, and remember to check. AppKestrel is always on.
AppKestrelWorks from any browser, any device
No Mac or Xcode install required
Proactive regression alerts
Get emailed when a metric degrades — before users notice
Version-over-version comparison table
All recent releases side-by-side with color-coded regressions
Device and iOS version heatmap
See every metric across all device models at once
90-day trend chart with release markers
Up to 90 days of history with version releases overlaid
Accessible to non-engineers
PMs, founders, and QA can check without a developer seat
Background monitoring — always current
Metrics fetched daily automatically, not only when you open it
Monitor multiple apps in one place
Up to 3 apps in a single dashboard on the Pro plan
Observability doesn't need to break the bank.
Start free. Upgrade when you need more history or apps.
Free
$0/mo
Get started at no cost
- 1 app
- 7-day metric history
- Battery drain & hang rate
Apple requires enough opted-in users to anonymize the data — the exact threshold is unpublished. Unsure if your app qualifies? Sign up to check — no credit card required.
Indie
$20/mo
For solo developers
- 1 app
- 30-day metric history
- All 6 metrics
- Version comparison
- Device breakdown
- Diagnostic signatures
- 7-day free trial
Pro
$50/mo
For teams & studios
- 3 apps
- 90-day metric history
- All 6 metrics
- Version comparison
- Device breakdown
- Diagnostic signatures
- 7-day free trial
Your whole team deserves to know.
Not just the engineer with Xcode open. Connect in minutes — no SDK, no code changes, works on any device.