# Sigma vs Miko

Sigma and Miko both sit at 4.4 stars, but that hides the real split: 97% of Miko's written reviews are positive against 87% of Sigma's. Sigma's advantage is ratings volume (54 vs 9). On price, rating, update cadence and ads there is nothing between them.

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

Miko holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Sigma has 54 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 87% of Sigma's written reviews are positive against 97% of Miko's.

Sigma ships an update weekly, Miko every 9 days. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Sigma | Miko |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (54 ratings)](https://appshunter.io/ios/app/sigma-ai/id6743433033/reviews) | **[4.6 (9 ratings)](https://appshunter.io/ios/app/miko/id6792616933/reviews)** |
| Number of ratings | **54** | 9 |
| Positive reviews | 86.8% of reviews | **97.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free | Free |
| Size | 231 MB | 97 MB |
| Requires iOS | **14.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Chaoshi Technology (Shanghai) Co., Ltd.](https://appshunter.io/developer/1520053656) | [灵跃游川(上海)科技有限公司](https://appshunter.io/developer/6792616935) |

## What reviewers say

### Sigma

[App page](https://appshunter.io/ios/app/sigma-ai/id6743433033)

This app offers a clean and engaging running experience with detailed analysis and personalized AI coaching. Track your runs, visualize your progress, and collect memories of your journeys on a unique map diary.

**Highlights:** Ad-free running experience, Daily, weekly, and monthly analysis, Map diary of runs and moods, AI-powered personalized coaching, Visualized calorie consumption, Data migration from popular wearables

**In-app purchases:** none


### Miko

[App page](https://appshunter.io/ios/app/miko/id6792616933)

This app uses a virtual cat companion to guide you through short, manageable exercise routines. It adapts plans based on your current condition and goals, encouraging small, consistent progress with visual tracking and achievement stickers.

**Highlights:** Virtual cat exercise companion, Short, fragmented exercise routines, Personalized workout plans, Progress tracking and visualization, Achievement stickers for milestones, Adaptive exercise based on user state

**In-app purchases:** none


## Frequently asked questions

### Is Sigma free?

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

### Is Miko free?

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

### Which has better reviews, Sigma or Miko?

Miko is rated higher. Sigma averages 4.4 out of 5 from 54 ratings, while Miko averages 4.6 from 9 ratings.

### Do Sigma or Miko have ads?

Neither Sigma nor Miko shows ads.

### Which is updated more often, Sigma or Miko?

Sigma ships an update weekly, and Miko every 9 days. Most recently, Sigma was updated on October 24, 2026 and Miko on October 20, 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.*