Precision AIM vs DOSELF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Precision AIM
This app delivers randomized motivational messages throughout the day to encourage increased physical activity. Participants log in with a research-provided username and must enable notifications and location services to receive messages. The app's primary function is to facilitate a research study on message-based motivation.
- Randomized motivational messages
- Physical activity encouragement
- Research study participation
- Notification and location services required
- Simple home screen interface
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This application is for an academic research study about how random daily messages influence participants' motivation to increase their physical activity. The purpose of this application is to receive messages sent at random times each day that provide motivation to increase physical activity. When you first open the app, you will be prompted to login with a username give to you by the research team. After login please complete: 1. Allow notifications: You must select "Allow" 2. Always allow location: You must select "Always Allow" You will begin receiving randomly scheduled messages the next day. Opening the application presents a home screen. There is no other user-facing functionality aside from receiving messages.
DOSELF
This app provides daily health and wellness surveys on your watch. It adjusts the survey frequency based on your physical activity data, like steps and heart rate. The goal is to offer a personalized and less intrusive health tracking experience.
- Daily health and wellness surveys
- Activity-based survey frequency adjustment
- Optional health data upload (steps, heart rate)
- Personalized survey count (3-6 per day)
- iOS Watch app integration
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DOSELF is an iOS watch app for health and wellness. With this app, each day, you will receive 3-6 simple surveys regarding your past physical activities (e.g., “In the past 2 hours, how many minutes did you spend exercising?”). You can optionally upload your health and fitness data (i.e., steps and heart rates) to change the number of surveys delivered throughout the day. If you took more than 10,000 steps during the past 24 hours, less number of surveys is delivered on the next day. The minimum number of surveys you can receive is 3, and maximum number is 6.
Screenshots
Verdict
The clearest difference is review sentiment: DOSELF at 100% against Precision AIM's 50%. DOSELF also leads on rating (5.0 vs 3.7) and update cadence (every 2 weeks vs every 64 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.
DOSELF holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 50% of Precision AIM's written reviews are positive against 100% of DOSELF's.
Precision AIM ships an update every 64 months, DOSELF every 2 weeks. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.
| Parameter | Precision AIM | DOSELF |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 64 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 18.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | SDC Insights, LLC | Ian Kim |
Customer experience
Precision AIM
DOSELF
In-app purchases
Precision AIM
No in-app purchases
DOSELF
No in-app purchases
