Comparison

CPS by CPhA vs HALO

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CPS by CPhA

Access essential, evidence-based drug information for healthcare professionals. Choose between drug monographs or full access with therapeutic guidance and tools. Stay updated with critical warnings and advisories.

Highlights
  • Evidence-based drug monographs
  • Therapeutic information
  • Non-prescription therapy guidance
  • Drug tables and algorithms
  • Medical calculators
  • Critical updates and warnings
Features
Read full description

CPS (formerly RxTx) has a new appearance. CPS is still the reliable, evidence-based drug resource it has always been and provides essential drug information at the point-of-care for health care practitioners. Now offering two subscription options – CPS Drug Information or CPS Full Access. CPS Drug Information is the Canadian standard for drug monographs, containing thousands of products including monographs for drugs, vaccines, natural health products and medical devices, approved by Health Canada. CPS Full Access includes all content from CPS Drug Information and the most current, evidence-based therapeutic information and non-prescription therapy for most common conditions, with cross-referenced drug tables and algorithms and DC condition-based drug tables. Both subscriptions types provide critical updates such as warnings and advisories; and useful tools such as medical calculators.

About

HALO

Features
Read full description

HALO is a bedside reference for High-Acuity Low-Occurrence emergencies. These are the procedures you rarely perform. They are also the ones you cannot afford to get wrong. It is built for one moment. The patient is deteriorating. You have less than a minute. You need the steps. WHAT IS INSIDE • 150 procedure and management cards. 49 are hands-on procedures, 101 are management protocols. • Airway: surgical and needle cricothyroidotomy, the failed-intubation Vortex, awake intubation, tracheostomy emergencies • Resuscitation: massive haemorrhage and MTP, traumatic cardiac arrest, resuscitative thoracotomy, undifferentiated hypotension, anaphylaxis, massive PE • Obstetric: resuscitative hysterotomy, postpartum haemorrhage, shoulder dystocia, precipitous delivery, neonatal resuscitation • Access and decompression: pericardiocentesis, finger thoracostomy, needle decompression, lateral canthotomy, intraosseous, transvenous pacing, escharotomy • 29 core ED procedures: laceration repair, regional and digital nerve blocks, arthrocentesis, abscess drainage, lumbar puncture, paracentesis, joint reductions, procedural sedation • Toxicology and environmental: acetaminophen and salicylate overdose, cholinergic and sodium-channel toxicity, methaemoglobinaemia, toxic alcohols, malignant hyperthermia, hypothermia, heat stroke • Critical care: post-intubation sedation, ventilator setup, refractory VF, post-arrest care, vasopressors, right ventricular failure • Paediatric and neonatal: sepsis, DKA, bronchiolitis, croup, the sick neonate, epiglottitis, paediatric arrest • 35 decision algorithms you walk one question at a time • A casting and immobilisation reference covering 26 injuries across 5 regions BUILT FOR THE BEDSIDE • Resus mode. Large type, tickable steps, an elapsed clock, and the screen stays awake. • Weight-based dose calculator. Enter the weight once. Every mg/kg dose on the card is worked out beside the printed rate, with ceilings flagged. • "Still failing, what am I missing?" sections for when the protocol has run out and the patient is not improving. • Typo-tolerant search that forgives one-handed typing mid-resuscitation. • Local notes on any card for your department's protocol or kit location. • Dark mode, adjustable text size, and full offline operation. HOW THE CONTENT IS MADE Every card is written and reviewed by a physician. Each card is checked against current guidelines and standard emergency medicine references, and lists its sources. Where sources disagree, the card says so and names both. Any card still under review is held back rather than shipped unfinished. PRIVACY HALO collects nothing and transmits nothing. There are no accounts, no advertising, no analytics and no crash reporting. The app makes no network requests at all. Notes, saved cards and quiz results stay in your device's own storage. They are deleted with the app. IMPORTANT. NOT A SUBSTITUTE FOR CLINICAL JUDGEMENT HALO is a reference aid for qualified healthcare professionals and trainees. It does not diagnose. It does not prescribe. It does not replace your own clinical judgement, your training, your supervision, or your local protocols and formulary. Doses, thresholds and indications must be confirmed against your institution's guidance before use. HALO is not a medical device. It is not intended for use by patients or the general public.

Screenshots

CPS by CPhA4 screens
HALO4 screens

Verdict

The call

The clearest difference is update cadence: HALO at every 3 days against CPS by CPhA's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CPS by CPhA ships an update every 4 months, HALO every 3 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
CPS by CPhA versus HALO: the parameters behind the verdict, then further details
ParameterCPS by CPhAHALO
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews13.1% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationSubscription—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.2 — better15.0
Further details — not scored
Size177 MB3 MB
Age rating17+17+
DeveloperCanadian Pharmacists Association (CPhA)Arjan Dhoot

In-app purchases

None

CPS by CPhA

No in-app purchases

None

HALO

No in-app purchases

Questions

Is CPS by CPhA free?
CPS by CPhA is free to download, with no in-app purchases.
Is HALO free?
HALO is free to download, with no in-app purchases.
Do CPS by CPhA or HALO have ads?
Neither CPS by CPhA nor HALO shows ads.
Which is updated more often, CPS by CPhA or HALO?
CPS by CPhA ships an update every 4 months, and HALO every 3 days. Most recently, CPS by CPhA was updated on October 17, 2026 and HALO on October 11, 2026.

Other comparisons