# Ninety Days vs Stellar Flow

The clearest difference is in-app purchases: Stellar Flow at none against Ninety Days's 2. Stellar Flow also leads on update cadence (every 3 days vs weekly) and iOS requirement (18.0 vs 26.0). Ninety Days's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Ninety Days sells 2 in-app purchases, starting at $4.99 per month. Stellar Flow asks for nothing beyond the download.

Ninety Days ships an update weekly, Stellar Flow every 3 days. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Ninety Days | Stellar Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/ninety-days-habit-tracker/id6738892062/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 45 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Andreas Stein](https://appshunter.io/developer/1782792219) | [Alexander Heemann](https://appshunter.io/developer/587278115) |

## What reviewers say

### Ninety Days

[App page](https://appshunter.io/ios/app/ninety-days-habit-tracker/id6738892062)

Build positive habits and break bad routines with motivating challenges and detailed progress insights. Track your consistency with streak analysis and earn rewards for completed goals. Offers both free and premium versions for deeper insights.

**Highlights:** 30, 60, & 90-day habit challenges, Detailed progress statistics, Streak tracking and analysis, Daily and overall habit overview, Earn badges and rewards, Flexible custom tracking

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan – cancel anytime | $4.99 | per month |
| Premium – 1 Year Ninety Days | $29.99 | per year |


### Stellar Flow

[App page](https://appshunter.io/ios/app/stellar-flow-focus-timer/id6757545517)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ninety Days free?

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

### Is Stellar Flow free?

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

### Do Ninety Days or Stellar Flow have ads?

Stellar Flow shows ads; Ninety Days does not.

### Which is updated more often, Ninety Days or Stellar Flow?

Ninety Days ships an update weekly, and Stellar Flow every 3 days. Most recently, Ninety Days was updated on October 10, 2026 and Stellar Flow on October 9, 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.*