ESMira vs ScreenZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ESMira
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ESMira is a tool for running longitudinal studies (ESM, AA, EMA, ...) with completely anonymized communication with participants and data collection. Fully functional offline ESMira works without a steady internet connection. All functionality of studies are saved locally in the app and saved data are cached and will be uploaded as soon as there is an internet connection. Personal Feedback Researcher can set up complex charts that will be automatically calculated out of participants' data. These statistics can be either personalised to the participants or calculated out of all participants' data. Completely anonymous Each participant gets a random participant id under which all data is collected. ESMira does not collect any personal data at any time. Anonymous Chat Participants can communicate with the researcher from within the app and stay completely anonymous while doing so. Additionally, researchers can send important messages to all participants of a study. Free and open source ESMira is developed as a project at Karl Landsteiner University to be used for our own studies and published for the community to use completely free of charge. Find out more at: https://github.com/KL-Psychological-Methodology/ESMira
ScreenZen
This app offers multiple strategies to help you reduce screen time and control app usage. Features include delayed app opening, timed scrolling interruptions, and customizable app limits. It also provides options for strict blocking, settings protection, and encourages mindful breaks.
- Delayed app opening
- Scrolling interruption
- Set app goals and limits
- Configurable daily schedules
- Strict app blocking
- Screen time tracking for distracting apps
- Settings protection locks
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Multiple strategies to reduce your screentime 1. Delay before opening your app: A bit of time before choosing if you need to open your distracting app. You can have the wait time increase each time you open your app. 2. Interrupt your scrolling: Check your distracting apps for short periods of time so you don't get sucked in. 3. Set an app goal and optionally block when you reach your limit. 4. Configurable for different days of the week and time by app. 5. Messages like "Is this important" before opening your app. 6. See your screen time for only your distracting apps. Don't worry about Google Maps bloating up your time. 7. Strict block your apps: Either for time ranges, after a certain number of opens or ScreenTime. 8. Locks on Settings to prevent you from changing your settings when you want to open an app. 9. Breathing and other activities to encourage you not to need to open the app while waiting for it to unlock. 10. Streaks to encourage you not to exceed your limits or override your settings.
Screenshots
Verdict
The clearest difference is in-app purchases: ESMira at none against ScreenZen's 4. ScreenZen's advantage is chart position (#139 vs unranked). On price, update cadence, 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
Both are free to download. ScreenZen sells 4 one-off in-app purchases. ESMira asks for nothing beyond the download.
ESMira ships an update monthly, ScreenZen every 3 weeks. The most recent releases landed on September 11, 2026 and September 28, 2026 respectively.
| Parameter | ESMira | ScreenZen |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (50K ratings) — better |
| Positive reviews | — | 93.3% of reviews |
| Number of ratings | — | 50K — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | #139 — better |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.6 — better | 16.4 |
| Further details — not scored | ||
| Size | 17 MB | 159 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Stieger | ScreenZen LLC |
Bugs and requests
ESMira
Not enough reviews yet to summarise bugs or requests.
ScreenZen
Reported bugs
3 issues- Unlock button not working as expected
- App stops working after some time
- Compatibility issues with iOS 16 update
Requested features
4 requests- Add more customization options
- Integrate with productivity/to-do apps
- Add more pause/break options
- Improve website blocking functionality
In-app purchases
ESMira
No in-app purchases
ScreenZen
- Kind Tip$5.00
- Generous Tip$10.00
- Amazing Tip$20.00
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- Fantastic Tip$40.00









