Glossary

AAPS = AndroidAPS is the name of the Android app.

AAPSClient = the follower app for caregivers. On a follower phone it follows a user’s AAPS through the user’s Nightscout site and, once paired with the AAPS phone, controls it remotely. Not to be confused with NSClient. Further info → Wiki - ‘The AAPSClient app’ and Master ↔ Client control.

Activity = Insulin activity, representing the speed of decay of IOB. See Wiki - ‘DIA’ and the related BGI.

AID = Automated Insulin Delivery. The term generally used in clinical practice and research for a system which automatically adjusts insulin delivery using CGM data. APS and closed loop mean the same thing → see also OS-AID.

APS = Artificial Pancreas System → see also AID.

AMA = Advanced Meal Assist. An algorithm which allows AAPS to increase the user’s basal more aggressively after a meal bolus. Further info → Wiki - ‘Advanced Meal Assist (AMA)’.

Adjustment Factor = used within DynamicISF and is a value set within a user’s Settings between 1% and 300%. This acts as a multiplier on the TDD value. See Wiki - DynamicISF adjustment factor

Android Auto = a system used to host certain functions of an Android smartphone’s features, including AAPS, within a car’s display. Further info → Wiki - ‘android auto’.

APK = Android application Package. A software installation file. Further info → Wiki - ‘Building APK’.

Autosens = calculation of sensitivity to insulin over a 24-hour and an 8-hour window etc. Further info → DIABETTECH - Autosens.

Azure = cloud computing platform to host Nightscout web app → see also Nightscout.

BAT = status light for low pump battery, shown in the status row of AAPS’ main screen → see also CAN / RES / SEN.

BG = blood glucose.

BGI = blood glucose impact. The degree to which BG ‘should’ rise or fall based on insulin activity alone.

BG source = An AAPS setting for configuring the source for blood glucose data. See Wiki - BG Source

Bridge = an additional device transforming FGM to CGM.

BR = Basal Rate. The amount of insulin in a given time block to maintain BG at a stable level. → see also IC / ISF.

BYODA = Build Your Own Dexcom App. A way to generate the user’s own Dexcom App for reading out the sensor data Dexcom G6.

CAGE = Cannula AGE. Displayed on AAPS’ main screen and in Nightscout, based on the user’s Prime/Fill careportal entries → see also Nightscout.

CAN = status light for overdue cannula change, shown in the status row of AAPS’ main screen → see also BAT / RES / SEN.

CGM = Continuous Glucose Monitor → see also FGM.

Closed Loop = a closed loop system which makes automatic adjustments to the user’s basal delivery based on an AAPS’s algorithm and the user’s Profile settings without requiring the user’s approval. Further info → Wiki - ‘closed loop’ and see also HCL / FCL.

COB = Carbs On Board. This is the amount of carbohydrates currently available for the user’s digestion → see also IOB.

CSF =Carbs Sensitivity Factor. i.e. how much does the user’s BG increase for 1g of carbs absorbed.

DIA = Duration of Insulin Action. Further info → Wiki - ‘DIA’ and see also → DIABETTECH - ‘DIA’.

DST = Daylight Saving Time. See Wiki - Timezone Change and Daylight Saving.

Dynamic ISF (or DynISF) = a feature within AAPS that adapts the insulin sensitivity factor (ISF) dynamically based on the user’s TDD and BG.

eCarbs = extended Carbs. Carbs split up over several hours (e.g. to cover fat/protein), which lets AAPS spread the insulin like an extended bolus. Further info → Wiki - ‘Extended Carbs’

FCL = Full Closed Loop. A loop which needs no mealtime input from the user: no carb counting and no meal bolus. Further info → Wiki - ‘full closed loop’ and see also HCL.

FGM = Flash Glucose Monitor such as the Abbott Freestyle Libre. Further info → Wiki - ‘BG source’ and see also ‘CGM’.

git = a tool used to store and download the AAPS’ source code.

GitHub = a web-based service that hosts the AAPS source code and its version control (tracking changes in files and coordinating work on them, especially for teams), and can also build the app. It is also necessary for APK updates. Further info → Wiki - ‘update APK’.

Glimp = an app to collect values from Freestyle Libre.

HCL (or Hybrid Closed Loop) = a loop which automates insulin delivery between meals, but still requires the user to bolus for meals. Nearly every system in everyday use, including AAPS, is a hybrid closed loop → see also FCL / Closed Loop.

IC (I:C, ICR, CR, carb ratio) = Insulin to Carb ratio. Note that this is conventionally g/U despite the acronym suggesting inverse.

IOB = Insulin On Board. Insulin active in the user’s body. See Wiki - Insulin on Board

ISF = Insulin Sensitivity Factor. The expected decrease in BG as a result of one unit of insulin. Unit is either mg/dL/U or mmol/L/U. These are not equivalent without a conversion!

Keystore (or JKS) = a Java Key Store which is an encrypted file where your personal developer certificates and keys will be stored required for your AAPS’ build (and rebuild).

LGS = Low Glucose Suspend. See Wiki - Low Glucose Suspend

LineageOS = free and open-source operating system for smartphones etc. When using Accu-Chek Combo see Wiki - Combo pump.

Log files = AAPS’ records of the user’s actions (useful for troubleshooting and debugging). Further info → Wiki - ‘log files’.

maxIOB = maximum total IOB. This is a safety feature and prevents AAPS delivering insulin over the user’s settings. Further info → Wiki - ‘Maximum total IOB OpenAPS can’t go over’.

min_5m_carbimpact = safety feature that is a calculation of default carb decay when carb absorption cannot be determined based on the user’s blood’s reactions. Further info → Wiki - ‘min_5m_carbimpact’.

Nightscout = open source project to access and report CGM data. The central data hub for the user’s AAPS data and can generate reports to view the user’s historical Nightscout data, such as expected HbA1c, time in range or search for patterns in the data via percentile chart etc.

Nightscout → see also Nightscout Reporter. This is particularly useful for parents following their child’s diabetes management.

Nightscout Reporter Tool = a tool which generates PDFs reports from Nightscout web app data. See ‘Nightscout Reporter’, ‘NS Reporter’ @ Facebook.

NSClient (NSClientV3) = the AAPS plugin that synchronizes data with Nightscout (Configuration → Communication). It is not the same as AAPSClient, the follower app. Further info → Wiki - ‘NSClient’.

OpenAPS = Open Artificial Pancreas System, the predecessor project and basis of AAPS.

Open Loop system = an AAPS feature that will recommend adjustments and which must be performed manually by the user on AAPS. Further info → Wiki - ‘Open Loop’.

Oref0 / Oref1 = sensitivity detection and “reference design implementation version 0/1”. It is the key algorithm behind OpenAPS. Further info → Wiki - ‘sensitivity detection’.

OS-AID = Open-Source Automated Insulin Delivery. An AID system built from open-source software, such as AAPS, OpenAPS, Loop or Trio. These systems are not formally approved by health bodies (FDA, NHS etc.) → see also AID.

Peak time = time of maximum effect of insulin given. Further info → Wiki - ‘Duration of insulin action (DIA) and peak’.

PH = Pump History. This can be accessed in AAPS’ treatments history: open the menu (☰) at the top left of the main screen and select Treatments.

Predictions = predictions for BG in the future based on different calculations. Further info → Wiki - ‘prediction lines’.

Profile = the user’s basic treatment settings (basal rate, DIA, IC, ISF, BG target). AAPS only uses profiles created within AAPS (Manage → Profile), but Nightscout Profiles can be copied (synchronised) to AAPS. Further info → Wiki - ‘Your AAPS profile’.

Profile switch = (temporary) switch of the user’s Profile to a different Profile saved within AAPS.

Profile Percentage = a (temporary) percentage increase or decrease applied to a user’s Profile for a selected time period.

RES = status light for overdue reservoir change, shown in the status row of AAPS’ main screen → see also BAT / CAN / SEN.

RileyLink = open source hardware device to bridge Bluetooth Low Energy (BLE) to 916MHz (used for old Medtronic pumps) or 433MHz (used for Omnipod Eros pumps) wireless communication.

SAGE = sensor age. This is displayed on the main screen of AAPS and in Nightscout, based on the user’s Sensor Insert careportal entries → see also Nightscout.

SEN = status light for overdue sensor change, shown in the status row of AAPS’ main screen → see also BAT / CAN / RES.

Sensitivity detection = calculation of sensitivity to insulin as a result of exercise, hormones etc. see also → DIABETTECH - ‘Autosens’.

Sensor noise = a term used to describe the unstable CGM’s readings leading to “jumping” BG values. Further info → Wiki - ‘Smoothing blood glucose data’.

SMB = Super Micro Bolus. An AAPS feature for faster insulin delivery in order to adjust BG. Further info → Wiki - ‘SMB’ and see also UAM.

Super bolus = shift of basal to bolus insulin for faster BG adjustment.

TBB = total base basal (sum of basal rate within 24 hours) → see also TBR / TDD.

TBR = temporary basal rate → see also TBB / TDD.

TDD = total daily dose (bolus + basal per day) → see also TBB / TBR.

TT = temporary target: temporary increase/decrease of the user’s BG target (range) e.g. for eating or sport activities. Further info → Wiki - ‘temp targets’.

UAM = unannounced meals. Detection of significant increase in BG levels due to meals, adrenaline or other influences and attempt to adjust this. Further info → Wiki - ‘UAM’ and see also SMB.

Virtual pump = an AAPS feature which allows the user to try AAPS’ functions, or lets PWD whose pump model has no AAPS driver use AAPS as an open loop → see also Open Loop.

Wallpaper = AAPS background image see phones page.

xDrip = open source software to read CGM systems.

Zero-temp = temporary basal rate with 0% (no basal insulin delivery).

→ see also the OpenAPS documentation