Markov Algorithm vs Meridian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Markov Algorithm
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.
- Markov Machine emulator
- String rewriting system
- Grammar-like rule application
- Step-by-step debugging
- Execution log
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Students of computer science are probably familiar with Markov algorithm. A string rewriting system that uses grammar-like rules to operate on strings of symbols. This application is a great Markov Machine emulator which can help you test your algorithms and debug it step-by-step using convenient execution log. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Meridian
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Meridian is an elegant time zone clock that allows you to view multiple time zones side by side, and scroll through time to find the best slot for a meeting. It's also a great travel companion! Meridian turns complex flight schedules into clear visual timelines. Instantly see: * Flight duration, departure and arrival times in both cities * Local time at your destination * Time back home throughout your journey * Live updates that show when your flight is delayed Built-in flight search means you can find your flight, and add it to your timeline with one tap. Meridian is free to use, with no sign in, no ads, and no data collection. You can manually add events and flights for free, or upgrade to paid to unlock flight search and delay data. Privacy policy: https://www.meridianapp.co/privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Meridian at every 2 days against Markov Algorithm's every 5 weeks. Markov Algorithm's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Markov Algorithm sells 3 in-app purchases, starting at $3.99 per month and Meridian sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Markov Algorithm ships an update every 5 weeks, Meridian every 2 days. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.
| Parameter | Markov Algorithm | Meridian |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 8 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Konstantin Mishukov | Tony Onodi |
In-app purchases
Markov Algorithm
- Premium: Monthly3 Days trial$3.991 Month
- Premium: Annual$14.991 Year
- Lifetime access$19.99
Meridian
- Meridian Pro$2.997 Days
- Meridian Pro$14.991 Year
Questions
Is Markov Algorithm free?
Is Meridian free?
Do Markov Algorithm or Meridian have ads?
Which is updated more often, Markov Algorithm or Meridian?
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