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Head-to-head · e-Prescribing Software

OnCallData vs FreeRx

  • Updated Nov 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score OnCallData #4 in e-Prescribing Software 8.4/10 Paid ✓ 5 of 6 features Visit OnCallData
FreeRx #7 in e-Prescribing Software 7.5/10 Free plan Free plan✓ 1 of 6 features Visit FreeRx

OnCallData leads on 0 checks, FreeRx on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOnCallData · 8.4/10
  • Free planonly FreeRx
  • Most featuresOnCallData · 5 of 6

OnCallData scores higher on our rubric for e-prescribing software: 8.4 against 7.5 out of 10; our editors rank them #4 and #7.

FreeRx offers free plan; OnCallData doesn't.

OnCallData is the better fit for practices needing broad prescribing and renewal workflows. FreeRx is the better fit for UK clinics sending private prescriptions.

  • OnCallData fits best

    Practices needing broad prescribing and renewal workflows

  • FreeRx fits best

    UK clinics sending private prescriptions

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Side by side

Feature OnCallData 8.4/10 Visit ↗ FreeRx 7.5/10 Visit ↗
At a glance
Editor score 8.4 7.5
Ranking #4 in e-Prescribing Software #7 in e-Prescribing Software
Best for Practices needing broad prescribing and renewal workflows UK clinics sending private prescriptions
Pricing model Paid Free plan + paid
Starting price $600/user/yr £0.99/unit usage-based
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Phone, Email Email
Compliance 2FA GDPR
Built for Small business, Mid-market Small business
Features OnCallData 5/6 · FreeRx 1/6
Controlled substances ✓ (best) Not checked yet
Drug interaction checks ✓ (best) Not checked yet
Formulary checks ✓ (best) Not checked yet
Renewal requests ✓ (best) Not checked yet
Mobile app Not checked yet Not checked yet
EHR integration ✓ ✓
Our review
Pros
  • Handles electronic prescriptions, renewals and controlled substances
  • Checks drug risks, medication history, formulary and patient coverage
  • Supports prior authorizations, PDMP access and EMR integration
  • Free for clinics prescribing fewer than 100 prescriptions monthly
  • £0.99 per-transmission pricing with no contract
  • Electronic signatures and prescriber registration checks
Cons
  • Costs $600 per provider per year, billed annually
  • Optional one-time integration fees are not included in the starting price
  • Access is web-based; no desktop or mobile app platform is listed
  • Focused on private prescriptions rather than broader prescribing workflows
  • Clinical checking features are not established
  • API integration may require additional implementation work
Our verdict

OnCallData is a web-based electronic prescribing service for physicians and practice staff. Its workflows cover sending prescriptions and renewal requests to pharmacies, including controlled substances, and processing pharmacy renewal…

Read the review →

FreeRx is Clynxx’s cloud service for clinics and prescribers sending electronic private prescriptions. It suits UK practices that need to deliver prescriptions to patients without a monthly subscription: patients can receive them by email…

Read the review →
  1. OnCallDatae-Prescribing Software 8.4Paid
  2. FreeRxe-Prescribing Software 7.5Free plan

Strengths and trade-offs

  • OnCallData — where it wins

    • Handles electronic prescriptions, renewals and controlled substances
    • Checks drug risks, medication history, formulary and patient coverage
    • Supports prior authorizations, PDMP access and EMR integration

    Where it doesn't

    • Costs $600 per provider per year, billed annually
    • Optional one-time integration fees are not included in the starting price
    • Access is web-based; no desktop or mobile app platform is listed

  • FreeRx — where it wins

    • Free for clinics prescribing fewer than 100 prescriptions monthly
    • £0.99 per-transmission pricing with no contract
    • Electronic signatures and prescriber registration checks

    Where it doesn't

    • Focused on private prescriptions rather than broader prescribing workflows
    • Clinical checking features are not established
    • API integration may require additional implementation work

OnCallData vs FreeRx: questions

Which is better for e-prescribing software, OnCallData or FreeRx?

OnCallData scores higher on our rubric for e-prescribing software: 8.4 against 7.5 out of 10; our editors rank them #4 and #7.

How do OnCallData and FreeRx compare?

Of the 6 checks we put side by side, OnCallData leads on none, FreeRx on 1, and 5 are level. Free plan only on FreeRx.

Do OnCallData and FreeRx have a free plan?

OnCallData: No. FreeRx: Yes.

More comparisons

All e-prescribing software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update