# Opinion Ninja vs Simple Life Log

The clearest difference is update cadence: Simple Life Log at every 2 days against Opinion Ninja's every 5 weeks. Simple Life Log also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Opinion Ninja ships an update every 5 weeks, Simple Life Log every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Opinion Ninja | Simple Life Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (57 ratings)](https://appshunter.io/ios/app/opinion-ninja/id6446061079/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 59 MB | 30 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sample Ninja](https://appshunter.io/developer/1669845315) | [RYOJI NAKASHIMA](https://appshunter.io/developer/1893305650) |

## What reviewers say

### Opinion Ninja

[App page](https://appshunter.io/ios/app/opinion-ninja/id6446061079)

Earn rewards by sharing your opinions through paid surveys. Redeem points for cash via PayPal or gift cards from popular retailers. Make your voice heard and get paid on the go.

**Highlights:** Take paid surveys on the go, Earn rewards for opinions, Redeem points for PayPal cash, Get gift cards from top retailers, Choose survey length and reward

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Simple Life Log

[App page](https://appshunter.io/ios/app/simple-life-log/id6762193379)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Opinion Ninja free?

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

### Is Simple Life Log free?

Simple Life Log is free to download, with no in-app purchases.

### Do Opinion Ninja or Simple Life Log have ads?

Both Opinion Ninja and Simple Life Log show ads.

### Which is updated more often, Opinion Ninja or Simple Life Log?

Opinion Ninja ships an update every 5 weeks, and Simple Life Log every 2 days. Most recently, Opinion Ninja was updated on November 3, 2026 and Simple Life Log on October 31, 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.*