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Survive & Thrive · AID Series

CamAPS FX: what it offers, how to get the most from it

Side 1 of 2
What CamAPS FX offers
CamAPS FX · YpsoPump
System profile

CamAPS FX at a glance

ICR
Primary optimisation lever Insulin-to-Carbohydrate Ratio (ICR). A weaker ICR shifts more insulin to algorithm-delivered basal - increases algorithm strength.
Registry TIR
69.6%
Boughton 2026
Registry
35,714
real-world users
Age
1+
widest paediatric
Ref: Tauschmann M et al. 2018 Lancet · Boughton CK 2026 · Biester T 2023 DPV · Pemberton & Uday 2026.
The essentials
✓YpsoPump + smartphone app. Algorithm lives on your phone.
✓Cambridge pedigree. Developed from one of the longest continuous AID research programmes globally.
✓Compatible CGMs: FreeStyle Libre 3 / 3 Plus · Dexcom G6 / G7.
✓User-adjustable target - typically 4.4-7.0 mmol/L range.
✓Continuous adaptive learning. Algorithm adapts to your individual insulin needs over time.
✓Boost mode - higher algorithm strength for illness, growth, persistent highs, pregnancy.
✓Ease-off mode - lower algorithm strength for exercise, post-exercise, increased sensitivity.
✓Approved from age 1 - only AID system approved for very young children.
GNL configuration framework · Pemberton & Uday 2026

Three tiers - pick the one that fits you

TierTarget rangeICR approachBasal split
Optimal4.4-5.5 mmol/LWeaker ICR65% algo / 35% user
Balanced5.5-6.0 mmol/LModerate ICR55% / 45%
Protective6.7-7.0 mmol/LStronger ICR45% / 55%
ICR is the CamAPS lever. Unlike Control-IQ (CF) or 780G (AIT), CamAPS responsiveness is driven by how much insulin the algorithm is allowed to deliver as basal vs your mealtime bolus. Weaker ICR = more algorithmic work.
Boost & Ease-off · real-world safety

Two tools for two situations

  • Boost. Algorithm assumes ~35% higher insulin needs. For illness, growth surges, persistent hyperglycaemia, pregnancy. 0.0% time below 3.9 mmol/L during Boost (vs 2.1% outside). Does not cause hypoglycaemia (Royston & Hovorka 2024, n=7,464).
  • Ease-off. Reduces insulin delivery. For exercise, post-exercise risk, increased sensitivity. Counter-intuitively reduces hyperglycaemia during exercise - reflects the insulin-exercise interaction.
Getting the most from CamAPS · Part 1

Let the algorithm learn

CamAPS adapts to you continuously. The more consistent your bolusing and meal patterns, the more the algorithm learns.

  • First 2 weeks. Let it stabilise before making settings changes.
  • Bolus before meals. Even on an adaptive system, pre-meal insulin still matters.
  • Count carbs honestly. The algorithm uses your input to model your response.
  • Don't under-bolus to make the algorithm work harder. This creates bigger excursions, not better control.
Paediatric & pregnancy

Where CamAPS shines

  • Age 1+. Only AID approved this young. Widely used in toddlers and young children.
  • Caregiver use of Ease-off most frequent - typically around nursery drop-off, playground, naps.
  • Pregnancy. CamAPS has the strongest pregnancy evidence base of any AID - CONCEPT-T, AiDAPT trials.
  • Boost during pregnancy enables safe tighter targets as insulin needs rise.
Survive & Thrive · AID Series

CamAPS FX: the 20% that makes 80% of the difference

Side 2 of 2
How to get the most out of it
CamAPS FX · YpsoPump
Major in the majors · #1

Three settings, most of the outcome

  • Glucose target range. 4.4-7.0 mmol/L. Tighter range = higher algorithm strength.
  • Insulin-to-Carb Ratio (ICR). The CamAPS primary lever. Weaker ICR → more basal-delivered insulin.
  • Basal / TDD. Algorithm adapts around your programmed basal. Keep it close to reality.
  • Boost and Ease-off. Use them - they're safe and effective.
Major in the majors · #2

Keeping the phone + pump + CGM talking

  • App must stay open in background. Force-closing stops the algorithm.
  • Battery optimisation off for CamAPS app - OS might kill it otherwise.
  • Bluetooth between phone, pump, CGM. Keep phone within range of both.
  • YpsoPump cartridge changes - every 3 days max. Rotate sites as with any tubed pump.
  • Phone incompatible? Check CamDiab supported devices list before buying a new phone.
Major in the majors · #3

Two actions that move HbA1c most

The AID Optimiser models what ICR and target changes will do. Use it before you change anything.

Action 1 AID Algorithm OptimiserModel ICR and target changes for CamAPS FX. See expected TIR shift before you commit. → Action 2 Exercise Planning ExplorerWhen to use Ease-off and for how long. Session-specific modelling. →
Go deeper

GNL explorers, guides & podcasts

Interactive tools, graded evidence and long-form reading when you want more than a leaflet.

GuideFull AID Guide - 5-part seriesHow every AID algorithm works, side by side.→ SystemGNL CamAPS FX PageDeep dive - Cambridge MPC algorithm, registry data, pregnancy evidence.→ PodcastAID Series - CamAPS episodesCambridge team interviews, user experience, paediatric perspective.→ AskGrace - evidence-backed Q&AAsk anything about CamAPS FX, AID or T1D.→