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// payload launch monitor · convergence target: T-5min //
// SHARED VIEW // — read-only snapshot . Input controls are disabled.
SAVE TO THIS DEVICE (overwrites local)
EXIT SHARED VIEW
// HOW TO USE THIS APP //
After each contraction , tap one of the four
colored buttons below based on how long the contraction
lasted: Ow (under 30 seconds), Oooow
(30–60 s), Oooooow (60–120 s), or
Oooo….w! (over 2 minutes). The labels refer only to
duration , not pain intensity. This is the fastest mode
and doesn't need the app to be open during the contraction.
If you want a precise measurement and the app
is already open, tap I CAN'T COUNT when the
contraction starts and tap again when it ends .
The robot will time it for you down to the second.
Watch the graph and the yellow status line.
Each dot is one interval between contractions. As labor
progresses, dots should drift toward the dashed green line at
5 minutes. The status line tells you, with robot humor, which
stage the pattern looks like.
The 5-1-1 rule. The standard guideline is to go
to the hospital when contractions are about 5 minutes apart,
each about 1 minute long, and that pattern has held for about
1 hour. The app will show 5-1-1 sustained(1h): YES
when that condition is met.
Export the log as JSON or CSV (bottom of the
page) if you want a record for your midwife or OB.
⚠ Override signals — go straight to your maternity unit
regardless of what this app says: waters break, vaginal
bleeding, reduced fetal movement, constant severe pain between
contractions, under 37 weeks with suspected labour, any
contraction lasting longer than 2 minutes, 6+ contractions in
10 minutes, or a strong urge to push.
Ow < 30 s
Oooow 30 – 60 s
Oooooow 60 – 120 s
Oooo….w! > 120 s
I CAN'T COUNT
NEXT IN
--:--
// tap once when the contraction starts, tap again when it ends — measures exact duration in seconds //
SYSTEM IDLE — payload secured in launchpad.
Telemetry buffer empty. Awaiting first pulse.
DOWNLOAD TELEMETRY (.json)
DOWNLOAD TELEMETRY (.csv)
COPY SHARE LINK
PURGE LOG
⚠ NOT A MEDICAL DEVICE. This app is a toy companion
for timing intervals between contractions. It does not diagnose labor,
does not replace clinical judgement, and cannot substitute for contact
with a qualified healthcare provider. If in doubt, call your midwife,
OB, or maternity unit.
// THRESHOLDS AND SOURCES //
5-1-1 rule (tier "prep"): contractions ~5 minutes
apart, each ~1 minute long, sustained for ~1 hour before going to
the hospital. The app verifies the 5-minute interval and the
1-hour sustained span. When duration data exists (either the
"I CAN'T COUNT" auto-timer or any Ow-bucket tap), the app also
verifies avg duration ≥ 55 s (Mayo active-labor range 60–90 s,
see [2]); otherwise the duration half must be confirmed by the
operator. Source: Cleveland Clinic, "Stages of Labor" (reviewed
2025-04-23):
clevelandclinic.org/…/stages-of-labor .
Duration buckets (Ow / Oooow / Oooooow / Oooo….w!):
boundaries at 30 / 60 / 120 s come directly from published ranges.
< 30 s = early-labor duration range per Cleveland Clinic,
"Contractions" (updated 2024-08-08):
clevelandclinic.org/…/contractions .
60–120 s overlaps Mayo Clinic's active-labor range of "60 to 90
seconds" per "Stages of labor and birth":
mayoclinic.org/…/stages-of-labor .
> 120 s is the NHS urgent-contact override in "Signs that
labour has begun" (reviewed 2023-11-09):
nhs.uk/…/signs-that-labour-has-begun .
Each bucket stores the range midpoint as an estimated
duration_sec with a bucket:* source tag
so measured and estimated data stay distinguishable on export.
Active labor contractions (tier "imminent"):
"every two to five minutes, lasting about 60 to 90 seconds." The
app uses avg < 3 min as a proxy for deep active labor.
Source: Mayo Clinic, "Stages of labor and birth":
mayoclinic.org/…/stages-of-labor .
Early labor / latent phase (tier "drill"):
contractions "20 to 30 seconds" long, "every 30 to 60 minutes";
NHS describes latent-phase intervals as highly variable — "a few
minutes ... or half an hour or even longer." Sources:
Cleveland Clinic, "Contractions" (updated 2024-08-08):
clevelandclinic.org/…/contractions ;
NHS, "Signs that labour has begun" (reviewed 2023-11-09):
nhs.uk/…/signs-that-labour-has-begun .
Tachysystole / urgent override (tier "critical"):
NHS lists as urgent "6 or more contractions every 10 minutes" →
mean interval < 1.67 min, OR any contraction lasting longer
than 2 minutes (> 120 s). The app enforces BOTH halves: the
interval check always, and the duration check whenever the last
contraction has duration data (from the auto-timer or a bucket tap).
Source: NHS, "Signs that labour has begun" (reviewed 2023-11-09):
nhs.uk/…/signs-that-labour-has-begun .
Active labor cervical threshold (context only; not used
in classification): ACOG/SMFM place the active phase at
6 cm dilation (Obstetric Care Consensus No. 1, 2014); WHO places
it at 5 cm (Labour Care Guide, 2020); NICE uses 4 cm
(NG235, 2023-09-29). The app cannot measure dilation and does
not use this threshold — listed here to explain why tier names
do not rely on it. Sources: ACOG OCC #1 (2014, via AJOG):
ajog.org ;
WHO Labour Care Guide (2020):
iris.who.int ;
NICE NG235:
nice.org.uk/guidance/ng235 .
True vs. false labor (qualitative): ACOG: "True
labor contractions have a pattern, get closer together as time
goes on, and each lasts about 60 or 90 seconds ... continue even
when you rest or move around." No guideline publishes a numeric
variance / σ threshold. The app's σ display is a visual aid only
and is NOT used in classification. Source: ACOG FAQ, "How to Tell
When Labor Begins":
acog.org/…/how-to-tell-when-labor-begins .
// GO TO HOSPITAL REGARDLESS OF THIS APP IF //
Water breaks (especially if smelly or coloured), vaginal bleeding,
reduced fetal movement, constant severe pain with no relief between
contractions, under 37 weeks with suspected labour, contractions
lasting longer than 2 minutes, 6+ contractions in 10 minutes, or a
strong urge to push. Sources: NHS, "Signs that labour has begun"
(2023-11-09); ACOG FAQ, "How to Tell When Labor Begins."
// APP LIMITATIONS //
(1) Duration data is either measured (via the
"I CAN'T COUNT" auto-timer button) or bucketed (via a tap
on one of the 4 Ow-buttons, in which case the stored duration is
the midpoint of the selected range — 20 / 45 / 90 / 150 s). When
no duration data is present, the "~1 minute long" half of the
5-1-1 rule falls back to operator confirmation. (2) The rolling
statistics window is the last 5 intervals; the 1-hour "sustained"
check uses all presses in the last ~65 minutes. (3) No guideline
publishes a numeric regularity/σ threshold, so σ and the
"heuristic convergence" percent are display-only and do not drive
classification. (4) ACOG/WHO/NICE disagree on the cervical
dilation marker for active labor (6 cm / 5 cm / 4 cm) — the app
cannot measure dilation and does not depend on this. (5) The app
does not know about water breaking, bleeding, or other override
signals listed above; the operator must act on those independently.
(6) "I CAN'T COUNT" relies on the app staying open between the
start and end taps; if you close the tab or reload the page
mid-contraction the timer is lost — use a bucket button after the
fact in that case.