# LifeOS vs Polymath

The clearest difference is in-app purchases: Polymath at none against LifeOS's 2. LifeOS's advantage is update cadence (every 8 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. LifeOS sells 2 in-app purchases, starting at $2.99 per month. Polymath asks for nothing beyond the download.

LifeOS ships an update every 8 days, Polymath every 3 weeks. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | LifeOS | Polymath |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Size | 14 MB | 11 MB |
| Requires iOS | 26.1 | 26.1 |
| Devices | iPhone, iPad, Mac, Apple Watch | iPhone, iPad, Mac, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ryota Kimura](https://appshunter.io/developer/1832418496) | [Divyansh Divyansh](https://appshunter.io/developer/1870395698) |

## What reviewers say

### LifeOS

[App page](https://appshunter.io/ios/app/lifeos-self-observatory/id6755999327)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LifeOS Pro (Monthly) | $2.99 | per month |
| LifeOS Pro (Yearly) | $29.99 | per year |


### Polymath

[App page](https://appshunter.io/ios/app/polymath-think-plan-do/id6758142607)

**In-app purchases:** none


## Frequently asked questions

### Is LifeOS free?

LifeOS is free to download, with in-app purchases available.

### Is Polymath free?

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

### Do LifeOS or Polymath have ads?

Neither LifeOS nor Polymath shows ads.

### Which is updated more often, LifeOS or Polymath?

LifeOS ships an update every 8 days, and Polymath every 3 weeks. Most recently, LifeOS was updated on September 23, 2026 and Polymath on September 18, 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.*