iMTracker vs IAJS Retreat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMTracker
This tool helps you identify potential links between daily habits and outcomes like headaches. Track factors such as caffeine, meditation, or exercise to see their correlation with your daily results. It provides a score based on collected data, requiring at least three days of input for analysis.
- Track daily habits and outcomes
- Identify potential correlations
- Analyze lifestyle factors
- Data-driven scoring
- User-controlled data storage
- Requires minimum 3 days of data
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The iMTracker is a lifestyle evaluation tool that you can use to determine whether lifestyle factors might be associated with daily outcomes. The iMTracker was developed by physicians in the Individualized Data Analysis Organization of the University of Colorado School of Medicine. This application allows the user to select a given outcome that is causing trouble each day (for example, headaches) and enter data for other possible factors (variables) that might be correlated on that day, or the day before. For example, a person might enter caffeine, meditation, or daily exercise as his or her variables. After a given number of days, the app will provide the user with a score based on the Phi statistic for how strong the correlation might be. At least 3 days of data is required to get a score, although the more data collected, the stronger the association. The iMTracker does not collect or store any data other than what is kept on the users device, and no information about the user is required for use. The PM App Lite is strictly for entertainment uses only, and users should not make any changes in their lifestyle or habits without first consulting their physician. THIS APP IS FOR ENTERTAINMENT PURPOSES ONLY. DO NOT MAKE ANY CHANGES TO YOUR LIFESTYLE WITHOUT CONSULTING YOUR TREATING PROVIDER. The iMTracker is a trademark of the University of Colorado. Copyright 2017. All rights reserved.
IAJS Retreat
This app offers a 12-week digital prayer experience based on the Spiritual Exercises. It guides users through reflection and weekly reviews to foster a deeper connection with God. It's suitable for faith communities and individuals seeking spiritual growth.
- 12-week digital prayer experience
- Spiritual Exercises framework
- Reflection questions and prompts
- Weekly prayer review guidelines
- Exploration of Christ's love
- Suitable for groups and individuals
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A digital 12–week prayer experience framed by the Spiritual Exercises, this app is of particular help to faith communities such as Bible study and prayer groups. But individuals can also use it as a means of prayer. The instructions for retreat invite a “conversion of heart from a tight focus on one’s self to a graced focus on God–with–us.” The app includes questions and prompts for reflection, and guidelines for reviewing each week of prayer. These Retreats allows participants to explore Christ's love in everyday life using the revered principles and teachings of Ignatian Spirituality. We also welcome those who have not yet explored Ignatian Spirituality.
Screenshots
Verdict
The clearest difference is update cadence: IAJS Retreat at every 9 days against iMTracker's every 2 months. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for iMTracker against 5.0 for IAJS Retreat. Both are backed by a comparable volume of ratings — 3 and 4 respectively.
iMTracker ships an update every 2 months, IAJS Retreat every 9 days. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.
| Parameter | iMTracker | IAJS Retreat |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (4 ratings) |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 47 MB | 56 MB |
| Age rating | 4+ | 17+ |
| Developer | University of Colorado Denver | Boston College |
Customer experience
iMTracker
IAJS Retreat
In-app purchases
iMTracker
No in-app purchases
IAJS Retreat
No in-app purchases
Questions
Is iMTracker free?
Is IAJS Retreat free?
Which has better reviews, iMTracker or IAJS Retreat?
Do iMTracker or IAJS Retreat have ads?
Which is updated more often, iMTracker or IAJS Retreat?
Other comparisons
