Biorhythm Plus vs Modbus TCP FieldKit
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Biorhythm Plus
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When you enter a birthday show biorhythms for today. You can also view the biorhythm of a specified date.
Modbus TCP FieldKit
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Modbus TCP FieldKit puts a professional Modbus TCP toolkit in your pocket. Commission equipment in the field, validate setups in the lab, or troubleshoot home automation โ all from your iPhone. โข Connect to any Modbus TCP or RTU over TCP device โ read coils and registers, monitor data blocks in real time โข Modbus RTU over TCP โ reach RS-485 devices through Wi-Fi or Ethernet converters in transparent mode (for example Elfin EW11, USR or Waveshare). If a read times out, the app offers to try the other framing with a single read. โข Find devices and Scan Unit IDs on your own Wi-Fi subnet โ ports 502, 1502, 8899 and 4196. Each device is read once and nothing is written. โข Chart every monitored value โ the app keeps the last 600 points or 1 hour per value while it is open โ and Export CSV through the system share sheet. โข Save device profiles for one-tap reconnection to frequently used endpoints โข Write with confidence โ every write operation requires your explicit confirmation โข Built-in foreground simulator โ run editable coils and holding registers for testing โข Track active connections and review bounded local logs kept on your device โข All data stays local โ logs and diagnostic exports are sanitized by default Requires Local Network access for device communication. RS-485 devices connect through a Wi-Fi or Ethernet converter in transparent mode. Default server port is 1502. Background server operation and port 502 support pending device validation.
Screenshots
Verdict
The clearest difference is price: Biorhythm Plus at Free against Modbus TCP FieldKit's $5.99. Biorhythm Plus also leads on iOS requirement (13.0 vs 18.0). Modbus TCP FieldKit's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Biorhythm Plus is free to download; Modbus TCP FieldKit costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Biorhythm Plus ships an update every 2 months, Modbus TCP FieldKit weekly. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.
| Parameter | Biorhythm Plus | Modbus TCP FieldKit |
|---|---|---|
| Price | Free โ better | $5.99 |
| Update frequency | Every 2 months | Weekly โ better |
| Ads | Yes | No โ better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 24 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | DongHyeon Yun | Vladimir Chemeris |
In-app purchases
Biorhythm Plus
No in-app purchases
Modbus TCP FieldKit
No in-app purchases
Questions
Is Biorhythm Plus free?
Is Modbus TCP FieldKit free?
Do Biorhythm Plus or Modbus TCP FieldKit have ads?
Which is updated more often, Biorhythm Plus or Modbus TCP FieldKit?
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