# Markov Algorithm vs Altimeter

The clearest difference is in-app purchases: Altimeter at none against Markov Algorithm's 3. Altimeter also leads on update cadence (weekly vs every 5 weeks). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Markov Algorithm sells 3 in-app purchases, starting at $3.99 per month. Altimeter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Markov Algorithm against 5.0 for Altimeter. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Markov Algorithm ships an update every 5 weeks, Altimeter weekly. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Markov Algorithm | Altimeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/markov-algorithm/id1427691412/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/altimeter-real-time-altitude/id6755687132/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 60 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Konstantin Mishukov](https://appshunter.io/developer/1164017853) | [海瑞 彭](https://appshunter.io/developer/1739283160) |

## What reviewers say

### Markov Algorithm

[App page](https://appshunter.io/ios/app/markov-algorithm/id1427691412)

This tool emulates a Markov Machine, a string rewriting system used in computer science. It helps students test and debug algorithms with grammar-like rules and a step-by-step execution log.

**Highlights:** Markov Machine emulator, String rewriting system, Grammar-like rule application, Step-by-step debugging, Execution log

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium: Monthly | $3.99 | per month |
| Premium: Annual | $14.99 | per year |
| Lifetime access | $19.99 | one-time |


### Altimeter

[App page](https://appshunter.io/ios/app/altimeter-real-time-altitude/id6755687132)

This utility app provides real-time altitude measurements using GPS and barometric sensors. It also offers route tracking, direction guidance, and works offline, making it ideal for outdoor activities and daily reference.

**Highlights:** Real-time altitude display, Accuracy information, Direction and location assistance, Route tracking, Offline functionality, Low power consumption

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Markov Algorithm free?

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

### Is Altimeter free?

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

### Which has better reviews, Markov Algorithm or Altimeter?

Markov Algorithm and Altimeter are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Markov Algorithm or Altimeter have ads?

Neither Markov Algorithm nor Altimeter shows ads.

### Which is updated more often, Markov Algorithm or Altimeter?

Markov Algorithm ships an update every 5 weeks, and Altimeter weekly. Most recently, Markov Algorithm was updated on October 3, 2026 and Altimeter on October 9, 2026.

---

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