Comparison

i vs LumenCycle

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

Head to head
About

i

This app helps individuals and teams track performance, set goals, and foster communication. It provides tools for journaling, feedback, and real-time assessments to drive high performance.

Highlights
  • Performance intelligence tracking
  • Goal setting and progress monitoring
  • Journaling and feedback tools
  • Real-time assessments
  • Team communication and insights
  • Individual routine creation
Read full description

Welcome to your central platform that enables you to clearly see and track all the components of Performance Intelligence. i-PQ starts by asking you some simple questions to see how you’re doing and allows you to see what are the main Goals you are working on. Whether you are a Coach or a CEO / Team Leader, you have the ability to see how everyone is getting on in an instant. You also have a suite of easy to use tools at your fingertips such as your Journal, Rant & Rave, as well as simple in the moment assessments that help you and anyone to have the conversations that truly matter. i-PQ is your pathway to deliver High Performance. Who is this for: Coaches: - have all of your clients at your fingertips - simple way to communicate with all of them - simple way to look after yourself as too CEO's / Team Leaders: - know exactly what is going on for your team - track progress over time - a simple way to give Feedback & Encouragement in real time Team Members: - keep track of what you are up to in a transparent way - share insights with your leader and other members of your team Individuals: - track how you're doing - create a routine of asking yourself certain questions that forces you to pause and think - keep your coach up to date with what is going on with a one click solution

About

LumenCycle

This privacy-focused app helps you track your menstrual cycle and fertility entirely offline. Log symptoms, view predictions on a clear calendar, and protect your data with Face ID. Premium features include detailed export options.

Highlights
  • Offline cycle tracking
  • Period and fertility window predictions
  • Symptom logging
  • On-device data storage
  • Face ID protection
  • Cycle history and trends
  • PDF and CSV export (premium)
Features
Read full description

Lumen Cycle is a privacy-first period and fertility tracker that works entirely offline. No accounts. No cloud sync. No analytics. Your logs stay on this device unless you choose to export them. SEE YOUR CYCLE CLEARLY A dark, calm calendar highlights period days, fertile windows, and estimated ovulation so you can understand your cycle at a glance. Tap any day to log, or jump months quickly when you need history. LOG WHAT MATTERS Record flow intensity, basal body temperature (°F or °C), cervical fluid, intimacy, and grouped symptoms — physical, mood & sleep, and digestive/other. Notes stay private on your phone. ON-DEVICE PREDICTIONS Lumen Cycle estimates your next period, fertile window, and ovulation using your past period starts (modified Ogino-Knaus calendar method). Predictions are estimates for personal awareness — not birth control and not medical advice. HISTORY & TRENDS Charts show cycle length, period length, basal temperature trends, and which symptoms you logged most this month. FACE ID PROTECTION Require Face ID (or device passcode) when you open the app and when you return from the background, so your cycle data isn’t visible at a glance. EXPORT WHEN YOU NEED IT Premium unlocks PDF summaries for doctor visits (last 3 months), plus JSON and CSV exports to the Files app. FREE TO START Your first month of logging is free. When you’re ready, unlock everything forever for $2.99 — one payment, no subscriptions, no add-ons. Privacy isn’t a setting in Lumen Cycle. It’s the product.

Screenshots

i4 screens
LumenCycle4 screens

Verdict

The call

The clearest difference is in-app purchases: i at none against LumenCycle's 1. On price, rating, ratings volume and ads 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. LumenCycle sells 1 one-off in-app purchase. i asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for i against 5.0 for LumenCycle. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard2 real differences · 7 level
i versus LumenCycle: the parameters behind the verdict, then further details
ParameteriLumenCycle
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0.0 — better15.1
Further details — not scored
Size52 MB30 MB
Age rating17+4+
DeveloperJez Cartwright Inc.Robert Diehl

In-app purchases

None

i

No in-app purchases

1 purchases

LumenCycle

One-time1
  • LumenCycle Life Time Unlock$2.99

Questions

Is i free?
i is free to download, with no in-app purchases.
Is LumenCycle free?
LumenCycle is free to download, with in-app purchases available.
Which has better reviews, i or LumenCycle?
i and LumenCycle are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do i or LumenCycle have ads?
Neither i nor LumenCycle shows ads.

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