SEMA3 vs My EZ Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SEMA3
Design and conduct smartphone-based survey research with this comprehensive software suite. It offers tools for creating and deploying ecological momentary assessments directly on mobile devices.
- Design survey research
- Conduct smartphone surveys
- Ecological momentary assessment
- Mobile survey deployment
- Research software suite
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SEMA (Smartphone Ecological Momentary Assessment) is a suite of software for designing and conducting smartphone-based survey research For more information, please visit https://sema3.com/
My EZ Diary
Share your opinions and complete surveys to earn rewards. Receive reminders for new tasks to ensure you don't miss opportunities to participate and be recognized.
- Complete surveys
- Earn rewards
- Receive task reminders
- Share your views
- Participate in activities
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My EZ Diary is a fun new way for you to share your views and get rewards from your participation. We'll invite you to download this app and complete surveys about yourself. We'll send you reminders when new tasks are available so you don't miss out! Your opinions count, and there are no right or wrong answers. Just tell us what you think and participate in the activities on the app and you'll be a star participant! See you soon on My EZ Diary!
Screenshots
Verdict
The clearest difference is rating: My EZ Diary at 3.8 against SEMA3's 3.1. SEMA3's advantage is update cadence (every 2 months vs every 6 months). On price, ratings volume, ads and in-app purchases 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.
My EZ Diary holds the better App Store score, 3.8 against 3.1. Both are backed by a comparable volume of ratings — 8 and 4 respectively.
SEMA3 ships an update every 2 months, My EZ Diary every 6 months. Both last shipped on November 2, 2026.
| Parameter | SEMA3 | My EZ Diary |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (8 ratings) | 3.8 (4 ratings) — better |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 8 — better | 4 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Sinnott | Mobile Digital Indaba |
Customer experience
SEMA3
My EZ Diary
In-app purchases
SEMA3
No in-app purchases
My EZ Diary
No in-app purchases
