SRM X vs MD Binary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SRM X
This app configures and monitors pedal power meters for cycling disciplines like MTB, Gravel, and Cyclocross. It offers an easy installation wizard, real-time data viewing, and firmware upgrades. The app also integrates with health platforms to store cycling metrics.
- Pedal status and configuration
- Easy installation wizard
- Real-time data view
- Firmware upgrades
- Health app integration
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SRM's latest innovation brings the advantages of pedal PowerMeters to new disciplines like MTB, Gravel or Cyclocross. The new sensors and electronics make installation easy. The SRM X-Power is simply installed on the crank and works immediately after a quick setup with the X-Power App. Features: - Pedal status and configuration - Installation wizard procedure - Real time data view - Firmware upgrade This app integrates Health app to store time, distance and heart rate data.
MD Binary
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Check your bike's potential with the Binary system with a simple click! Calculate and set the optimal sprockets for your bike with the Binary Gear® system from MagneticDays. The app allows you to quickly and easily determine which types and sizes of optimal chainrings you should use on your bike fitted with the Binary Gear® system and the resulting metric ratio development, and compare it to the performance of a classic rear derailleur.
Screenshots
Verdict
The clearest difference is update cadence: MD Binary at every 4 days against SRM X's every 3 months. SRM X's advantage is iOS requirement (12.3 vs 14.0). 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. Neither carries in-app purchases, so what you see is what you pay.
SRM X ships an update every 3 months, MD Binary every 4 days. The most recent releases landed on September 14, 2026 and June 8, 2026 respectively.
| Parameter | SRM X | MD Binary |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.3 — better | 14.0 |
| Further details — not scored | ||
| Size | 17 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Ulrich Schoberer | Marco Sbragi |
In-app purchases
SRM X
No in-app purchases
MD Binary
No in-app purchases
