Comparison

ObCalc vs FlexPlus

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

Head to head
About

ObCalc

Features
Read full description

ObCalc puts the calculators, scoring tools, and reference charts that obstetrics, maternal-fetal medicine, and labor & delivery teams reach for every shift into one fast, offline-first app. Every formula is sourced to published guidelines (ACOG, SMFM, CMQCC, NICHD) and built as a clinical tool first — clean inputs, clear interpretation, no clutter. OBSTETRICS • Bishop Score • Estimated Due Date — LMP, ultrasound, conception, ovulation, or IVF transfer dating • Pregnancy Re-dating (ACOG Committee Opinion 700) • Pregnancy Weight Gain Tracker • Urine Protein:Creatinine Ratio (UPCR) • VBAC Success Calculator — Grobman MFMU model • VBAC at Delivery Admission Success Calculator — Grobman MFMU model PERINATOLOGY / MFM • CVR (CPAM Volume Ratio) • Extremely Preterm Birth Outcome (NICHD) • Fetal Biometry Suite — Hadlock EFW, long-bone ratios, multi-panel z-scores and percentiles • Intrauterine Transfusion (IUT) Volume Calculator • MCA Doppler / PSV for Fetal Anemia • Neonatal Morbidity Risk • Ponderal Index • GDM Insulin Dosing • Life-Limiting Skeletal Dysplasia Screen • Twin Discordance • Umbilical Artery Doppler GENERAL • Anion Gap • Apgar Score • BMI • Iron Deficit • Peak Flow • Gestational Age (date difference) • Maternal Sepsis Assistant (qSOFA / Sepsis-3) • CMQCC Sepsis Screen THROMBOPHILIA • VTE Anticoagulation Dosing (ACOG Practice Bulletin 196) GENETICS • cfDNA PPV/NPV Calculator • Nuchal Translucency Percentile WHY CLINICIANS CHOOSE OBCALC • Offline-first — no connection needed on L&D • Fast, distraction-free interface — no ads, no tracking • One-time purchase. No subscription, no account required • Regularly updated with new tools and guideline changes • Built-in unit conversion and inline number-pad arithmetic on every input ObCalc is a clinical reference tool intended for use by licensed healthcare professionals. It does not replace clinical judgment, and results should be confirmed against current guidelines and your institution's protocols.

About

FlexPlus

Features
Read full description

The Valere FlexPlus App allows licensed clinicians to initiate orders for patients, review order status, and dispense products to the patient. The clinician may also expedite the order through the application, by uploading a signed prescription and other order related documents. Key features of the FlexPlus application are: 1. FlexPlus user can login using User Id and Password and remember User Id for next login 2. FlexPlus user can create orders for patients 3. FlexPlus user gets instant push notification updates related to created orders 4. FlexPlus user can switch between facilities/hospitals 5. FlexPlus user can view inventory for current facility 6. FlexPlus user can view and manage received push notifications 7. FlexPlus user can dispense product to patients after approval

Screenshots

ObCalc4 screens
FlexPlus4 screens

Verdict

The call

The clearest difference is price: FlexPlus at Free against ObCalc's $2.99. FlexPlus also leads on update cadence (every 4 weeks vs every 3 months) and iOS requirement (15.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

FlexPlus is free to download; ObCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ObCalc ships an update every 3 months, FlexPlus every 4 weeks. The most recent releases landed on September 26, 2026 and September 14, 2026 respectively.

Scorecard3 real differences Ā· 3 level
ObCalc versus FlexPlus: the parameters behind the verdict, then further details
ParameterObCalcFlexPlus
Price$2.99Free — better
Update frequencyEvery 3 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size3 MB38 MB
Age rating17+4+
DeveloperCode Nine Labs LLCValere Health, Inc

In-app purchases

None

ObCalc

No in-app purchases

None

FlexPlus

No in-app purchases

Questions

Is ObCalc free?
ObCalc costs $2.99, with no in-app purchases.
Is FlexPlus free?
FlexPlus is free to download, with no in-app purchases.
Do ObCalc or FlexPlus have ads?
Neither ObCalc nor FlexPlus shows ads.
Which is updated more often, ObCalc or FlexPlus?
ObCalc ships an update every 3 months, and FlexPlus every 4 weeks. Most recently, ObCalc was updated on September 26, 2026 and FlexPlus on September 14, 2026.

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