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The RAPT Pill from Kegland is the most serious challenger to the Tilt Hydrometer’s dominance in floating wireless gravity monitors, and having run both through extended parallel fermentation monitoring I can give a genuine head-to-head assessment. The RAPT Pill launched with more features on paper than the Tilt, and the real-world performance comparison is closer than you’d expect given the price difference.
RAPT Pill vs. Tilt: specifications and features
RAPT Pill (Kegland): Australian-designed floating hydrometer with WiFi and Bluetooth connectivity, notably the only floating hydrometer in the mainstream market that offers both. Wireless: connects to home WiFi for cloud logging to the RAPT portal (Kegland’s cloud platform) AND transmits Bluetooth for local reception. Sensors: gravity (tilt angle), temperature, gyroscope. Display: a small LED indicator on the body shows charge status and connection state. Battery: rechargeable via USB-C (a significant advantage over the Tilt’s non-rechargeable battery arrangement in earlier versions). App/platform: the RAPT portal is Kegland’s integrated brewing platform, it logs fermentation data, integrates with their other RAPT ecosystem products, and supports recipe management. Price: approximately $70–90 USD. Calibration: the RAPT Pill ships with a calibration polynomial that can be customized in the app. Accuracy: comparable to the Tilt at ±0.002–0.003 SG with standard calibration. Tilt Hydrometer (Baron Brew Equipment): The original commercial floating hydrometer. Bluetooth only (no WiFi, requires a Bluetooth receiver device within range). Sensors: gravity (tilt angle), temperature. Battery: the original Tilt uses a CR123A non-rechargeable battery; the Tilt Pro uses a rechargeable internal battery charged via USB. Available in 8 colors to distinguish multiple fermenters. Extensive third-party integration: Brewfather, TiltBridge (Raspberry Pi receiver for WiFi bridging), Google Sheets, Brew Tools, the Tilt’s long market presence means it is integrated into virtually every brewing software platform. Price: approximately $135–150 for the standard Tilt; $175–200 for the Tilt Pro. Key differentiators: WiFi native: RAPT Pill has it built-in; Tilt requires a separate TiltBridge Raspberry Pi setup ($50–100 additional) for equivalent always-connected data logging. Rechargeable battery: RAPT Pill has USB-C charging standard; Tilt Pro has it, standard Tilt uses disposable batteries. Software ecosystem: Tilt wins decisively, years of third-party integrations versus RAPT’s proprietary portal. Price: RAPT Pill is significantly cheaper than the Tilt for equivalent functionality.
Which to choose in 2026
Choose RAPT Pill when: You want native WiFi logging without a separate Raspberry Pi receiver. You use Kegland equipment (RAPT temperature controllers, RAPT fermenters) and want native ecosystem integration. You’re budget-conscious and want a rechargeable floating hydrometer at lower cost than the Tilt Pro. You don’t need integration with Brewfather or other third-party brewing platforms that primarily support Tilt. Choose Tilt when: You already use Brewfather, Beer Smith, Brew Tools, or any other brewing software that has native Tilt integration, the Tilt’s API and data format are supported everywhere. You want the longest-established, most widely documented floating hydrometer with the largest support community. You’re in the US market where Tilt has stronger retail availability and warranty support. You use multiple fermenters and want color-coded simultaneous monitoring. The honest comparison: The RAPT Pill offers comparable accuracy, native WiFi, and USB-C charging at lower cost than an equivalent Tilt Pro setup. On pure hardware value, it’s competitive with or better than the Tilt at its price point. The Tilt wins on software ecosystem maturity and third-party integration breadth. For new buyers evaluating both in 2026: if Brewfather integration matters, choose Tilt; if RAPT portal or standalone WiFi logging is sufficient, the RAPT Pill is excellent value.
Common Questions
How accurate are floating hydrometers compared to a regular hydrometer?
Floating hydrometers (Tilt, RAPT Pill, iSpindel) measure gravity through tilt angle and are inherently less accurate than a well-calibrated glass hydrometer measuring liquid density directly. The accuracy comparison in practical numbers: a calibrated glass hydrometer reads gravity to ±0.001 SG (one point) when used at the correct temperature with a properly calibrated instrument. Floating digital hydrometers typically achieve ±0.002–0.004 SG (2–4 points) with standard calibration. With careful custom calibration (measuring the device against a reference hydrometer across multiple known gravity points and fitting a custom polynomial), floating hydrometers can approach ±0.001–0.002 SG. The practical implications of this accuracy difference: for tracking fermentation progress (is gravity dropping? has it stabilized?), ±0.002–0.004 SG is more than adequate, the trend information is clear even at this precision. For absolute gravity decisions (is FG actually 1.010 or 1.012?), the ±0.002–0.004 uncertainty matters, a 2-point error affects ABV calculation by approximately 0.25% and may affect carbonation priming calculations. The recommendation established earlier applies here: use the floating hydrometer for fermentation trend monitoring and use a glass hydrometer for definitive FG confirmation before packaging. The floating hydrometer tells you when to check with the glass hydrometer, not what the glass hydrometer will say.
