CALIPER App vs The Perinatal Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CALIPER App
This app helps healthcare professionals and parents compare a child's lab test results against a comprehensive, up-to-date database of normal values. It simplifies the assessment of pediatric laboratory data, aiding in the identification of potential health concerns and treatment adjustments.
- Pediatric lab test comparison
- Up-to-date reference value database
- Supports over 100 routine tests
- User-friendly interface
- Portable on-the-go tool
- Validated and published data
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The CALIPER App has been developed for paediatricians, family physicians, other healthcare workers, as well as parents worldwide. It is a user friendly and easy tool to assess a child’s laboratory test results using the latest reference value database developed based on values in healthy children and adolescents. Quickly and easily compare individual laboratory test results to a database of normal values (reference intervals) covering more than 100 tests routinely performed to assess children with various medical concerns. The CALIPER database has been validated and published in international medical journals and accepted worldwide as the most up to date reference resource available anywhere. Reference intervals represent the range of values that healthy, normal individuals are expected to display for various laboratory tests. When a patient’s results fall outside of this expected range, this alerts physicians and laboratory professionals to the need for follow-up testing and can signal that changes to treatment or monitoring are required. The reference intervals included in this application were determined as part of the Canadian Laboratory Initiative for Pediatric Reference Intervals (CALIPER) at the Hospital for Sick Children, an ongoing nation-wide study of normal values in paediatric lab results. Until recently, only outdated or inaccurate values were available for many paediatric lab tests. CALIPER provides reference intervals that reflect the influence of the rapid developmental and hormonal changes occurring during childhood. All reference intervals reported here were developed using the most up-to-date laboratory testing equipment available from Abbott Diagnostics. To use the app, simply select the test of interest, enter an individual’s results, and select their sex and age from the drop-down menu. An output will display how these results relate to CALIPER reference database, allowing for efficient and easy comparison. With your phone at hand, you will never be without this simple, portable tool for evaluating lab tests results on the go. For a complete list of tests available as part of this application, or for additional support, please visit the CALIPER website.
The Perinatal Memo
A quick reference guide for healthcare professionals on Canadian perinatal care recommendations and practice guidelines. It covers evidence-based information for pregnant women, childbirth, and newborns.
- Canadian perinatal care guidelines
- Evidence-based recommendations
- Covers pregnancy, childbirth, and newborns
- Quick reference for professionals
- Designed for family physicians, midwives, nurses
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Written by practicing family physicians and educators, this quick reference book is intended for family doctors involved in prenatal care or deliveries, as well as midwives, nurses, and other professionals in the field of perinatal care. It is also useful for students and trainees in these disciplines. This application aims to provide a summary of the main evidence-based Canadian recommendations and practice guidelines in the field of perinatal care, including care for pregnant women, childbirth, and newborns. Disclaimer: This document is intended for healthcare professionals and is not designed to provide information to the general population regarding perinatal care. If you are pregnant and experiencing a problem or complication, please consult your healthcare professional. Privacy Policy: https://memoperinatalite.ca/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: CALIPER App at Free against The Perinatal Memo's $39.99. CALIPER App also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.1). The Perinatal Memo's advantage is update cadence (every 2 months vs every 16 months). On review sentiment, ads 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
CALIPER App is free to download; The Perinatal Memo costs $39.99 up front. The Perinatal Memo sells 1 in-app purchase, starting at $19.99 per year. CALIPER App asks for nothing beyond the download.
CALIPER App ships an update every 16 months, The Perinatal Memo every 2 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | CALIPER App | The Perinatal Memo |
|---|---|---|
| Price | Free — better | $39.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 16 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 112 MB |
| Age rating | 4+ | 17+ |
| Developer | The Hospital for Sick Children | Les Editions Memos S.E.N.C. |
Customer experience
CALIPER App
The Perinatal Memo
In-app purchases
CALIPER App
No in-app purchases
The Perinatal Memo
- Abonnement au contenu1 Year trial$19.991 Year







