Comparison

Read Your Body vs NG System

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

Head to head
About

Read Your Body

This app helps users understand their unique menstrual cycle patterns through customizable tracking of symptoms, lifestyle, and fertility indicators. It prioritizes user privacy with on-device data storage and offers science-based educational content. Ideal for those tracking periods, fertility, or managing irregular cycles.

Highlights
  • Customizable period and symptom tracking
  • Fertility charting with BBT and Tempdrop integration
  • Privacy-focused on-device data storage
  • Science-based educational content
  • Data import from other cycle apps
  • Support for irregular cycles, pregnancy, and postpartum
Features
Read full description

Female-led, non-profit, privacy-focused menstrual cycle app. Read Your Body (RYB) is highly customisable for understanding your unique patterns. Loved and trusted by users worldwide. 100% community-driven and user-funded. Try free for 30 days then it’s a small monthly / annual payment. PRIVACY FIRST By default all charting data is stored only on your device to care for your privacy. Use the app without ever entering your name or email address if you wish! Export or delete your charting data at any time. Register for an optional account for encrypted data backups & educational emails. PERIOD TRACKING *Period tracking mode with unlimited symptoms & lifestyle tracking including exercise, mood, stress, ovulation pain, cramps, self-care *Create your own custom tracking items to track what matters most for you *Upload daily notes, journal entries & photos *Enjoy dark mode & moon phases *Import your cycle data from other apps including Flo & Clue *Review your cycle trends including cycle length variation over time *Grow your menstrual cycle knowledge with our science-based content including menstrual cycle phases, hormones & top tips for cyclical living FERTILITY CHARTING *Customisable cervical fluid categories, sensation & cervix tracking *Basal body temperature (BBT), Tempdrop integration *Hormone tests (LH, progesterone, pregnancy, Clearblue monitor) *Mark all of your own interpretations including peak day, temperature rise, coverline & fertile days *Import your cycle data from other apps including Natural Cycles, Kindara & Fertility Friend *Review your cycle stats including cycle length, peak day & luteal phase length variation over time *Choose a settings template that perfectly matches your chosen natural family planning (NFP) / fertility awareness-based method (FABM) *Approved by institutes including SymptoPro, FEMM, Justisse, Marquette Method Professionals Association *Export your charts as images to share with your fertility awareness educator IRREGULAR CYCLES PCOS PERIMENOPAUSE *No predictions or algorithms makes Read Your Body ideal for use with irregular menstrual cycles *Set up custom tracking items for symptoms, medication, self-care *Export your charts as images to share with your healthcare provider PREGNANCY POSTPARTUM *Track pregnancy progress based on presumed ovulation day rather than last menstrual period for a more accurate estimated due date *Set up custom tracking items for pregnancy symptoms, breastfeeding, weaning SUPPORT Friendly, responsive support provided by our female-led team. Connect with us through the app: Menu > Support > Contact us Or via email: hello@readyourbody.com Whether you’re tracking your periods & symptoms, looking to understand your hormones or support your wellbeing, coming off hormonal birth control, trying to avoid pregnancy or conceive, pregnant or postpartum, moving through perimenopause - we’re here for you! YOUR DATA IN YOUR HANDS Note: Read Your Body is a data recording tool. It is not a contraceptive device or a medical device. It puts full responsibility for all tracking goals & outcomes in your hands. https://readyourbody.com/privacy-terms/

About

NG System

Features
Read full description

NG System es tu acceso directo a un equipo de profesionales en entrenamiento y nutrición. Nos especializamos en atención personalizada: cada plan, cada rutina y cada ajuste está diseñado específicamente para ti y tus objetivos. CÓMO FUNCIONA: Regístrate en la app, solicita tu plan y uno de nuestros profesionales se pondrá en contacto contigo para conocer tu caso, tus metas y tu estilo de vida. A partir de ahí, recibirás un plan completamente personalizado de nutrición y entrenamiento, con seguimiento continuo y comunicación directa con tu coach asignado. QUÉ INCLUYE TU SERVICIO: Plan de nutrición personalizado con comidas detalladas y totales nutricionales Rutina de entrenamiento con periodización profesional Chat directo con tu coach para resolver dudas en cualquier momento Seguimiento de progreso con registro de peso, medidas y gráficas Check-in semanal para ajustar tu plan según tus avances Video reviews para corrección de técnica de ejercicios Citas y consultas programadas con tu coach Ajustes continuos a tu plan conforme avanzas POR QUÉ NG SYSTEM: Somos un equipo de profesionales certificados en nutrición y entrenamiento personal. No usamos planes genéricos: cada paciente recibe atención individual, seguimiento constante y ajustes basados en sus resultados reales. Tu transformación es nuestro compromiso. Descarga NG System, solicita tu plan y empieza tu transformación hoy.

Screenshots

Read Your Body4 screens
NG System4 screens

Verdict

The call

The clearest difference is in-app purchases: NG System at none against Read Your Body's 2. NG System also leads on update cadence (weekly vs monthly). On price, ads, device support and iOS requirement 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. Read Your Body sells 2 in-app purchases, starting at $2.69 per month. NG System asks for nothing beyond the download.

UpkeepUpdate frequency

Read Your Body ships an update monthly, NG System weekly. The most recent releases landed on October 26, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
Read Your Body versus NG System: the parameters behind the verdict, then further details
ParameterRead Your BodyNG System
PriceFreeFree
Rating4.4 (196 ratings) — better—
Positive reviews80.7% of reviews—
Number of ratings196 — better—
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size159 MB75 MB
Age rating17+4+
DeveloperThe Body Literacy Collective CICLuis Felipe Franzoni Mathieu

Bugs and requests

Read Your Body

Reported bugs

3 issues
  • Login issues after reinstalling the app
  • Inability to import data from other apps
  • Inconsistent app performance after recent updates

Requested features

5 requests
  • Add predictive features for periods and ovulation
  • More customization options for intimacy tracking
  • Ability to sync data with partner
  • More emoji options for charting
  • Improved calendar view and cycle overview

NG System

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Read Your Body

Subscriptions2
  • Monthly supporter1 Month trial$2.691 Month
  • Annual supporter1 Month trial$20.991 Year
None

NG System

No in-app purchases

Questions

Is Read Your Body free?
Read Your Body is free to download, with in-app purchases available.
Is NG System free?
NG System is free to download, with no in-app purchases.
Do Read Your Body or NG System have ads?
Neither Read Your Body nor NG System shows ads.
Which is updated more often, Read Your Body or NG System?
Read Your Body ships an update monthly, and NG System weekly. Most recently, Read Your Body was updated on October 26, 2026 and NG System on September 21, 2026.

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