# Precision AIM vs DOSELF

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.

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.

## The numbers

| Metric | Precision AIM | DOSELF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/precision-aim/id1538468592/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/doself/id6470676604/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 64 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 1 MB | 2 MB |
| Requires iOS | 18.2 | **16.0** |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SDC Insights, LLC](https://appshunter.io/developer/1456386191) | [Ian Kim](https://appshunter.io/developer/1711668347) |

## What reviewers say

### Precision AIM

[App page](https://appshunter.io/ios/app/precision-aim/id1538468592)

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.

**Highlights:** Randomized motivational messages, Physical activity encouragement, Research study participation, Notification and location services required, Simple home screen interface

**Features:** macOS Compatibility

**In-app purchases:** none


### DOSELF

[App page](https://appshunter.io/ios/app/doself/id6470676604)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is Precision AIM free?

Precision AIM is free to download, with no in-app purchases.

### Is DOSELF free?

DOSELF is free to download, with no in-app purchases.

### Which has better reviews, Precision AIM or DOSELF?

DOSELF is rated higher. Precision AIM averages 3.7 out of 5 from 3 ratings, while DOSELF averages 5.0 from 2 ratings.

### Do Precision AIM or DOSELF have ads?

Neither Precision AIM nor DOSELF shows ads.

### Which is updated more often, Precision AIM or DOSELF?

Precision AIM ships an update every 64 months, and DOSELF every 2 weeks. Most recently, Precision AIM was updated on September 24, 2026 and DOSELF on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*